instructions foruse

MV distributionfactory built assembliesat your service

RM6

ENGLISH

07897073EN01 revision : 11 1

foreword 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .symbols and conventions 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .distribution rules 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .safety rules 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .maintenance rules 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

general description 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .circuit breaker and switch function 5. . . . . . . . . . . . . . . . . . . . . . . . . . . .fuse- switch and switch function 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .”switchboard coupling” switch and circuit breakers 6. . . . . . . . . . . . .cable connection function 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .metering cubicle 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .single- line diagramms 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

instructions for putting the RM6 into operation 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .prior to energising 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .pressure check of unit in operation 9. . . . . . . . . . . . . . . . . . . . . . . . . . .unit with pressure switch 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .position of the VPIS or VDS voltage indicator units (optional) 12. . . . .phase concordance unit 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .rules for the use of phase concordance unit 13. . . . . . . . . . . . . . . . . . . .RM6 equipped with VDS voltage detection units 16. . . . . . . . . . . . . . . .choosing the HV fuses 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .sealing of DE- Mt cubicle 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

instructions for putting into operation the protection relay for circuit- breaker 23. . . . . .VIP400 / VIP410 presentation 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .presentation of VIP40/45 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Sepam series 10 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .standard assignment of inputs/outputs and customised configuration 35human- machine interface 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .identification 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .operating instructions 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

operating instructions 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .operating and viewing substation condition 43. . . . . . . . . . . . . . . . . . . .operating safety 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .key- locking (optional) 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .padlocking 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .overcurrent indicator 47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .LV connection indicator Flair 2xD 48. . . . . . . . . . . . . . . . . . . . . . . . . . . . .detector pending fault 48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ammeter 53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .standard operating 53. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .connection of Cts to the 3 MV cables 54. . . . . . . . . . . . . . . . . . . . . . . . . .voltage detection relay 55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .detection sequence 55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .configuration of thresholds and time delays 56. . . . . . . . . . . . . . . . . . . .suggested choice for VD23 settings 56. . . . . . . . . . . . . . . . . . . . . . . . . . .access to the cable compartments 57. . . . . . . . . . . . . . . . . . . . . . . . . . . .access to the MV compartment of the DE- Mt cubicle 58. . . . . . . . . . .

preventive maintenance 59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .standard operating conditions 59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .harsh operating conditions 60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

corrective maintenance 61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .foreword 61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .maintenance summarising table 61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .replacing a fuse 65. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .access to the LV compartment 68. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .replacing a motor 68. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .replacing the LV contacts 69. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 07897073EN01 revision : 11

processing when dismantling the equipment 70. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .processing of SF6 gas when dismantling the equipment 70. . . . . . . . .

INFORMATION- ADVICEWe draw your attention to this specific point.

as per iso 3864- 2

DANGER: failure to follow thisinstruction will result in death or serious injury.

WARNING: failure to follow this instruction mayresult in death or serious injury.

CAUTION: failure to follow this instruction mayresult in injuries.This alert signal can also be used to indicatepractices that could damage the SM6 unit.

DANGER

AVERTISSEMENT

ATTENTION

Call your sales representative who will put you in contactwith the closest SCHNEIDER- ELECTRIC service centre.

You can log on to:

WWW.SCHNEIDER- ELECTRIC.COM

07897073EN01 revision : 11 3

symbols andconventions

Caution:you will find all the symbolsbelow throughout the document,indicating the hazard levelsdepending on the different typesof situation.

contact the SchneiderElectric service unit fordiagnosis and advice

foreword

Eye protection mustbe worn

Safety overalls must beworn

Safety boots must be worn

Safety gloves must beworn

Safety helmet must beworn

Ear protection mustbe worn

NEVER USE SOLVENTS AND ALCOHOL

WE DRAW YOUR ATTENTION TO THE RISKOF USING HIGH PRESSURE CLEANINGPROCESSES

4 07897073EN01 revision : 11

distribution rulesCAUTION

The aim of this publicationis to enable the RM6 unitto be installed correctly.

CAUTION

This document is not a commercialdocument.It is a strictly technicaldocument drawn up bySchneider Electric.

safety rulesCAUTION

All the operations described belowmust be performed in compliancewith applicable safety standards,under the responsibilityof a competent authority.

WARNING

The contractor must be certifiedand authorised to manipulate andperform work on the RM6 unit.

WARNING

Only undertake the work afterhaving read and understoodall the explanations given in thisdocument.If you have any difficulty complyingwith these rules, please contactSchneider Electric.

protective equipment

For each operation, it is mandatoryto use safety equipmentappropriate:

- Personal Protective Equipment(PPE)- Collective Protection Equipment(CPE)

maintenance rules

C DK EFG

BA

MH

L PN

IDI

G

H

EFDC

B

J

A

PN

IQI

07897073EN01 revision : 11 5

circuit breaker and switchfunction

A : operating mechanism frontplate comprising the mimicdiagram

B : information platesC : earthing switch operating

shaftD : switch operating shaftE : function position indicator

F : voltage indicatorG : LV connection access trunkingH : connection bushing access

panelK : VIP30/35 and VIP300

protection relaysL : D function opening

pushbutton

M : rating plateN : pressure switch or gauge

labelP : pressure switch or gauge

fuse- switch and switchfunction

A : operating mechanism frontplate comprising the mimicdiagram

B : information plateC : earthing switch operating shaftD : switch operating shaft

E : function position indicatorF : voltage indicatorG : LV connection access trunkingH : connection bushing access

panel

J : rating plateN : pressure switch or gauge

labelP : pressure switch or gauge

general description

A

B

C

D

E

1

FA

B

C

2

E

D

F

G

A

B

C

1

32

4

1 5

with LV compartment

without LV compartment

6 07897073EN01 revision : 11

”switchboard coupling”switch and circuitbreakersExample presented :1: DE- BC station with earthing

switch

2: DE- IC station with earthingswitch

A: control panelfeaturing the mimic panel

B: earthing switch operatingshaft

C: switch operating shaftD: voltage indicatorE: connection bushing access

panelF: rating plateG: characteristics plates

A: control panelfeaturing the mimic panel

B: earthing switch operatingshaft

C: switch operating shaftD: voltage indicatorE: connection bushing access

panelF: plate characteristics

cable connectionfunctionExemple presented : DE- O

A: characteristics plateB: rating plateC: connection bushing access

panel

metering cubicle

1: LV compartment2: voltage transformer access

panel3: characteristics plate

4: access panel to currenttransformer

5: LV compartment

NE = No ExtensibleDE = Double Extensible

LE = Left ExtensibleRE = Right Extensible

NE- D

NE- IDI

DE- IIBI

NETWORK ’SWITCH ’

LINE PROTECTION BY ’CIRCUIT- BREAKER’

DE- III NE- IQI

RE- DIDI

TRANSFORMER PROTECTION BY ’CIRCUIT- BREAKER’

DE- DD

TRANSFORMER PROTECTION

TRANSFORMER PROTECTION BY’ CIRCUIT- BREAKER’TRANSFORMER PROTECTION BY ’FUSE- SWITCH COMBINAISON’

BY ’CIRCUIT- BREAKER’

TRANSFORMER PROTECTION BY ’CIRCUIT- BREAKER ’ TRANSFORMER PROTECTION BY ’CIRCUIT- BREAKER’

DE- IDD DE- IIBc

SWITCHBOARD COUPLING ’CIRCUIT- BREAKER’

07897073EN01 revision : 11 7

single- line diagramms

8 07897073EN01 revision : 11

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07897073EN01 revision : 11 9

prior to energising

Check that the connectionbushings are fitted with connectorsor with insulating caps.

Check that the RM6 is connectedto the substation earth.

pressure check of unitin operation

CAUTION ENERGISED RM6 UNIT

unit with manometerCase 1:needle in green zone

H The RM6 unit is operating nor-mally.

Case 2:

WARNING

needle in red zone

H The RM6 unit must be replacedurgently.H It can remain energised untilreplacement.H All opening or closing opera-tions are forbidden.H To replace the RM6, power offthe unit.

instructions for puttingthe RM6 into operation

10 07897073EN01 revision : 11

warning labelrecalls the safety rules

unit with pressureswitch

LCD display checkPress the “TEST” button. The LCDscreen should display:

H If nothing is displayed, checkthat the 8- point connector on thepressure switch wiring harness atthe rear of the LCD display is cor-rectly connected.H Contact the after sales service.www.schneider- electric.comNote: The LCD display is self-powered by piezoelectric buttons(“TEST” and “DENSITY SWITCH”).Pressing on one of these buttonswill turn on the display for a fewseconds.

pressure checkPress the “DENSITY CHECK” but-ton. The LCD screen displays:

Case 1: OKH The RM6 unit is operating nor-mally.

07897073EN01 revision : 11 11

Cas n° 2 : LOW / OK

CAUTION

H The RM6 unit must be replaced.H It can remain energised untilreplacement.H All operations can be performedwhile energised.

Case 3: VERY LOW / NOT OK

WARNING

H The RM6 unit must be replacedurgently.H It can remain energised untilreplacement.H All opening or closing opera-tions are forbidden.H To replace the RM6, power offthe unit.

warning labelrecalls the safety rules

1 2 3

12 07897073EN01 revision : 11

position of the VPIS orVDS voltage indicatorunits (optional)

1 and 3 :voltage presence onnetwork cables.

2 : voltage presence downstreamof fuses for a switch combinationor on the outgoing cablefor a circuit - breaker.

VPISpresentation of VPIS- V1and VPIS- V2VPIS :Voltage Presence IndicatingSystem, a case with 3 built - inlights.

VPIS- V1 : production untilFebruary 2009.

VPIS- V2 : production startingfrom March 2009.

characteristics Conforming to IEC 61958, relativeto voltage presence.

operating instructions

WARNING

The indication provided by aVPIS- V1 or V2 alone is not suffi-cient to ensure that the system isde- energised.

INFORMATION

When the ambient lighting is parti-cularly bright, it may be necessaryto improve visibility by protectingthe indication.

A

B

A : voltage presence indicatorlight (one for each phase)

B : connection point designed forthe connection of a phaseconcordance unit (one foreach phase)

A

B

07897073EN01 revision : 11 13

phase concordanceunit

Phase concordance testing forVPIS- V1 and VPIS- V2 must becarried out each time a cable isconnected to a functional unit.

It is a way of making sure that allthree cables are each connectedto the corresponding phase ofthe substation.

principleThe principle of the phaseconcordance unit is that it allowsa check of the phase concor-dance between 2 energisedfunctional input units on thesame substation.

reminder of accessories thatcan be used for phaseconcordance test

Phase concordance unit V1.(51191954FA)

Phase concordance unit V2.(VPI62421

rules for the use ofphase concordanceunit

WARNING

IT IS IMPOSSIBLE TO CARRYOUT A PHASE CONCORDANCETEST WITH 2 VPIS OFDIFFERENT TYPES

Balanced phases :- the phase concordance unit light(1) is untit.Unbalanced phases :- the phase concordance unit light(1) is lit.

1

1

1 2

functional unit 1 functional unit 2

14 07897073EN01 revision : 11

rules for choosing phaseconcordance unit

phaseconcordance

unit

functional unit1

functional unit2

compatibilityresult corrective actions

V1 V1OK

V1 V2OK

Replace VPIS- V1 by VPIS- V2.Use a phase concordance unit V2.

V2 V2OK Use a phase concordance unit V2.

V1 V1OK

Replace VPIS- V1 units by VPIS- V2 unitsOR test with 1 phase concordance unit

V1.

V1 V2OK Replace VPIS- V1 with VPIS- V2.

V2 V2OK

check before phaseconcordance test

Please refer to the previous chaptersin the event of test malfunctioning.

TEST RESULT ACTION

Visual checking of the indicatorlights on the VPIS units of functionalunit 1 and of functional unit 2

The 3 indicator lights of each VPISare on.

The 2 functional units are energi-sed, the VPIS units are operatingand the check can continue.

The 3 indicator lights of the VPISare off. The functional unit is notenergised or the VPIS is defective.

Apply power to the functional unit.If VPIS- V1 remains unlit, replacedit by a VPIS- V2.

One or 2 indicator lights unlit. The VPIS is probably defective.Replace by a VPIS- V2.

Phase concordance unitcheck choice

On eachfunctionalunit testphases 1and 3.

You can test.

You cannot test them.The choice of the phase concor-dance unit is wrong or it is notfunctionning correctly.

phase concordance unit LED lit LED unlitlexique

or

07897073EN01 revision : 11 15

phase condordance testThe 3 indicator lights of the 2 VPIS are lit and the phase concordance unit is correct, meaning that phase concor-dance test can be performed.

Functional unit n°2

Func

tiona

luni

tn°1

L1 L2 L3Conclusion regarding phase concordance

L1

Connection is satisfactory.L2

L3

L1

Reverse the MV cables connected to L1 and L2on one of the 2 functional unitsL2

L3

L1

Reverse the MV cables connected to L2 and L3on one of the 2 functional units

L2

L3

L1

Reverse the MV cables connected to L1 and L3on one of the 2 functional unitsL2

L3

L1

Change the position of each MV cable on one ofthe 2 functional unitsL2

L3

L1Change the position of each MV cable on one ofthe 2 functional units

L2

L3

BB BB

A A A

16 07897073EN01 revision : 11

RM6 equipped withVDS voltage detectionunitsVDS: Voltage Detecting System,unit with connectors used to plugin individual indicators.

A: protective covers.B: connections points used

to connect an individualindicator.

characteristics The voltage detector systemequipping your RM6 is of theseparate VDS type, HR system.

It complies with standardIEC 61243- 5.

instructionsfor using the interface

Each time the interface is used,put back the protective covers.

Do not use connectors enablingshort- circuiting of the interface,in networks with unearthed orearthed neutral by resonant circuit.

accessories usableat the interface

Individual voltage indicator for HRsystem.Universal phase concordance unit.

CAUTION

The reliability of the informationprovided is guaranteed only byuse of accessories conform tostandard IEC 61243- 5: to usethem, follow the instructions of theaccessory manufacturer.

Other devices must only be usedat the interface if they exhibit thesame dielectric strength as anindicator.

07897073EN01 revision : 11 17

choosing the HV fusesThe rating of the fuses to be fittedin the RM6 protection functiondepends on the following factors(among others):H operating voltage.H transformer rating.H fuse technology (manufacturer).

H Various fuse types with strikerwith average energy can be fitted :- as per standard UTE NFC13.100, UTE NFC 64.210of the Soléfuse type.- as per recommendationIEC 282.1 and dimensionsDIN 43.625 of the Fusarc CF type.Example: general case forprotection of a 400 kVA – 10 kVtransformer, 63 A Soléfuse fuses or50A Fusarc CF fuses will bechosen.

For installation of fuses of othermanufacturers, please consultus.

Dimensions of the Soléfusefuses (UTE)

Ø55

450 35

rated voltage rating(kV)

rating to (A)

7,2 à 24 6,3 à 63

Our products are guaranteed only withthe fuses mentioned in this document.

To install fuses of other brands, pleaseask “Schneider Electric” support.

Dimensions of the Fusarc CFfuses (DIN)

33 .L 33 27

ØØ45

ratingvoltage

(kV)

rating to(A)

lenght(mm)

diamaterto (mm)

12 10 à 20 292 50,5

25 à 40 292 57

50 à 100 292 78,5

125 442 86

24 10 à 20 442 50,5

25 à 40 442 57

50 à 63 442 78,5

80 à 100 442 86

IEC & UTE standards require that all3 fuses are to be replaced after thefusion of one fuse.

selection table(rating in A, use without overloadat –25C < < 40C).

(*)SIBA types fuses at 160A/12kVreférence 30- 020- 13.

(”) In the case of an external trip system(eg.:overcurrent relay).

A calculation must be carried out toguarantee coordination of fusefuse- switches.

Please consult us.

For any values inclued in the table, pleaseconsult us.In this case of an overload beyond 40° C,please consult us.

fuse type operatingvoltage(kV)

Transformer rating (kvA) Ratedvoltage(kV)50 75 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000

Solefuse (norme UTE NFC : 130.100, 64.210)5,5 16 31,5 31,5 63 63 63 63 63 7,2

10 16 16 31,5 31,5 31,5 63 63 63 63 24

15 16 16 16 16 16 43 43 43 43 43 63

20 16 16 16 16 16 16 43 43 43 43 43 63

Fusarc CF et SIBA (*) (General case, IEC 60282- 1, standard CEI62271- 105 (to replace IEC 60420) and DIN 43625 standard)

12

3 20 31,5 40 50 50 63 80 100 125* 160”

3,3 20 25 40 40 40 63 80 80 125* 125* 160“

4,2 20 25 25 40 50 50 63 80 80 100 125* 160“

5,5 16 20 25 25 40 40 50 63 80 80 100 125* 160”

6 16 20 25 25 31,5 40 50 50 63 80 100 125* 160”

6,6 10 20 25 25 31,5 40 50 50 63 63 80 100 125* 160”

10 10 10 16 20 25 25 31,5 40 50 50 63 80 100 125*

11 10 10 16 20 20 25 25 40 40 50 50 63 80 100 125*

13,8 10 10 10 16 16 20 25 31,5 40 40 50 50 63 100* 24

15 10 10 10 10 16 20 25 31,5 31,5 40 50 50 63 80 100*

20 10 10 10 10 16 16 20 25 25 31,5 40 40 63 63 80 100*

22 10 10 10 10 10 16 16 20 25 31,5 40 40 50 63 80 100*

18 07897073EN01 revision : 11

fitting HV fusesCAUTION

Before performing theseoperations, close the earthingswitch.

CAUTION

Repeat the operations below forall 3 fuses.

To remove the cover: lift it and pullit towards you.The instructions are visibleon the cover.

Release the plug and push theextraction handle manually torelease the plug (tap with the palmof your hand to detach the plugseal if necessary).

Fit the plug as far as it will go andswivel it to the left to extract it.

To clean the plugs, consult thepreventive maintenance section.

Let the plug hang.Ensure the plugs are clean beforefitting them.

07897073EN01 revision : 11 19

fitting a DIN fuse(Fusarc CF)

On no account must a fuse thathas been knocked be installed.A test prior to installation usinga monitor is recommended.

rm6

Recover the centring devices in thebag supplied with the substation.

Insert the fuse in thecompartment.Fit the centringdevice on the fuse.Insert the plug pins in the plinthand swivel it round to the right.

fitting an UTE fuse(Solefuse)

CAUTION

On no account must a fuse thathas been knocked be installed.A test prior to installation usinga monitor is recommended.

Fix the fuse on the plug using atorque wrench with end BTR no. 5and insert the fuse in thecompartment.Tightening torque: 15 Nm.

Insert the plug and fuse assemblyin the compartment.Insert the plugpins in the plinth and swivel itround to the right.Press to insert the assembly in thedownstream clamp.

direction for mountinga fuse with striker

CAUTION

Fuse blowing releases a strikerthat causes three- phase openingof the switch and prevents it fromreclosing.

PercuteurStriker pinSchlagstiftPercussore

The end of the fuse equipped withthe striker is marked.

The technical data and mountingdirection of the fuse are printed onthe body.(striker facing upwards).

A

BA

C

A

20 07897073EN01 revision : 11

locking the plug

Make sure that the handletrunnions are inserted in the plinthslots and lock the plug manuallyby folding down the operatinghandle.

Plug with fuse blowing release,used to cause three- phaseopening of the switch.Press the switch to position it.

sealing of DE- Mtcubiclewithout LV compartment

A: rear sealingB: front sealingC: seal + wire; steel

B

07897073EN01 revision : 11 21

with LV compartment A: sealing of the LV compartmentB: seal + wire steel

22 07897073EN01 revision : 11

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Flap closed

Flap open

NRJED311206EN : reference manual is available on :INFORMATION- ADVICE

www.schneider- electric.comor call your sales representative who will put you in contact with the closet SCHNEIDER- ELECTRICservice center

07897073EN01 revision : 11 23

CAUTIONThe VIP parameters must be setcorrectly in order for the circuitbreaker function well.

VIP400 / VIP410presentationThe User- Machine Interface (UMI)on the front panel of VIP relaysconsists of a display, LEDs andkeys. A sealable pivoting flap canprevent access to the setting keysby unauthorized persons.

1: Display2: Status LEDs3: Fault indication LEDs4: Zone for a user- customizable

label with pictograms of thefault indication LEDs

5: Acknowledgement key6: Identification label7: Sealing ring8: Selection keys9: Key for selecting menus and

testing LEDs. When the VIP isnot supplied with power, thiskey can also be used tostart the VIP from the batteryin order to enter settings

10: Menu pictograms11: Menu selection pointer12: Battery compartment and

socket for connecting thepocket battery module

13: Settings protective flap14: Confirm entry key15: Abort entry key16: Setting keys

status LEDs H The status LEDs provideinformation about the VIP generalstatus:

Pictogram Function VIP400 VIP410

Green LED: auxiliary power supply present - H

Red LED permanently on: VIP unavailable (VIP in the fail - safe position). H H

Red LED flashing: a failure has been detected but does not involve the VIPgoing into the fail - safe position.

H H

Yellow LED flashing: communication active - H

instructions for putting into operationthe protection relay for circuit- breaker

Pictogram Overshoot

Overshoot of the instantaneous set point for phaseovercurrent protection (I> or I>> or I>>> pickup outputs

Overshoot of the instantaneous set point for earth faultprotection (Io> or Io>> pick- up outputs)

Overshoot of the alarm set point for thermal overloadprotection

24 07897073EN01 revision : 11

operationFault Indication LEDs

VIP relays have fault indicationLEDs. They flash to indicate a fault,as shown in the table below :

Pictogram Fault VIP400 VIP410

Detection of a fault by the phase overcurrent protection or in the event oftripping by the temporary test mode

H H

Detection of a fault by the earth fault protection H H

Detection of a fault by the thermal overload protection H H

Ext. Tripping by a volt- free contact connected to the external trip input - H

After a trip, the fault indicationLEDs are powered by the batteryembedded in the VIP or by theVIP410 auxiliary power supply.

Fault indication by the LEDs canbe stopped:H by pressing the Reset keyH automatically by the reappea-rance of a current in the networkhigher than the pick- up currentH automatically after 24 hoursH by remote control order via thecommunication (VIP410)

For the first 3 LEDs, faster flashingmay occur before the protectiontrips, to indicate the followinginformation :

note In custom mode, the protection setpoints may not be assigned to theMitop trip unit output.In this case, the fault indicationLED may be active, without beingassociated with the circuit breakertrip.

Depending on the application, thiscan indicate the presence of a faultwithout tripping the circuit breakerThe fault indication LED picto-grams can be customized by sti-cking a label to the right of theLEDs.

Etape Action

1 Press the key to select one of the 3 menus

The menu pointer indicates the selected menu :

: Metering menu

: Protection menu

: Parameters menu

2 Press the or keys to scroll throughthe screens in the select menu, until the desired screen diplayed

07897073EN01 revision : 11 25

displayThe display is an LCD unit.It is only back- lit on the VIP410,when the auxiliary power supply ispresent.

Each VIP function is presented in ascreen consisting of the followingitems:

H First line: symbols for electricalvalues or function nameH Second line: displays thevalues of measurements orparameters associated with thefunctionH A menu pointer, on the left, it ispointing to the pictogram for theselected menu

menu organizationAll the data available in the VIPrelay is divided between 3 menus:H The metering menu containsthe current measurements, peakdemand currents, load history,event records, fault trip counterand the breaking current history.

H The protection menucontains the essential settings

for setting up the protection func-tionsH The parameters menu

contains the parameters thatare used to adapt VIP operation toparticular applications.

When a VIP is new, all the parame-ters in this menu have a defaultvalue.The protection functions are opera-tional even with the parametersmenu default values.

selecting a screenin a menu

default screen A default screen is displayed auto-matically 3 minutes after the lastkeystroke.

This default screen is thescreen displaying the phasecurrents.

operation according to thepower supply mode(VIP400)

The VIP400 is a stand- alone pro-tection relay powered by its cur-rent sensors.When current is present in themedium- voltage (MV) network,the protections and the displaywork and it is possible to enter set-tings and view measurements.The current in the MV network onwhich the VIP operates is calledthe ’pick- up current’.When no current is flowing throughthe circuit breaker (for example cir-cuit breaker open), or when thecurrent in the MV network is toolow, the VIP is off and nothingappears on its display.If current appears, the protectionfunctions are activated and trip thecircuit breaker - or not - accor-ding to their settings.

The additional time taken by theVIP to start when current appearsis called the ’pick- up time’.More information on the value ofthe pick- up current and the pick-up time are available in the VIPFunction CharacteristicsPlease consult the referenceNRJED311207EN.

LV434206

26 07897073EN01 revision : 11

operation according to thepower supply mode(VIP410)

The VIP410 is a relay with a dualpower supply. It is powered bothautonomously by its sensors andby the auxiliary power supply.Like for the VIP400, theself- powered supply allow theprotection functions to work even ifthe auxiliary power supply fails.

The auxiliary power supply is usedto power functions that do notdepend on the current beingpresent in the MV network. Thesefunctions are marked in thefunction table (Please consult thereference NRJED311207EN). Theauxiliary power supply must bepresent in order them to work.

integral battery The VIP has an integral battery. Itis used to:H activate the user- machineinterface in order to enter settingswhen the VIP is not supplied withpowerH illuminate the fault indicationLEDs when the VIP is no longersupplied with power after givingtheopening order to the circuitbreakerH power the internal calendarWhen the VIP is not supplied withpower:Pressing and holding down thekey will activate battery- poweredoperation of the user- machineinterface. It is then possible toaccess the menus in order to entersettings.In this case, the displayturns off automatically after 3minutes of inactivity on the key-pad.

H The protection functions areactivated automatically if the cur-rent reappears.The integral battery plays no partin operating the protection func-tions. The protection functionswork even when there is no bat-tery.

NOTE :H in battery operation mode, theVIP processor runs with a reducedclock frequency to ensure the bat-tery life is maintained. As a result,the user- machine interface maybe slower to react.

H during a setting operation withthe VIP powered by its internalbattery alone, the clock display isnot refreshed on screen. Howeverthe internal clock increments nor-mally.

pocket battery module The pocket battery module is anaccessory that can be connectedto the front panel of VIP relays. Itcontains a battery that can beused to power the VIP in order to:H enter settings if the integral bat-tery is missing and if the VIP is notpowered by the current sensorsH test the VIP, please consult thereference NRJED311207EN.

H display the cause of the last tripby the VIP’ please consult the refe-rence NRJED311207EN.H more information on connectingthe pocket battery module to theVIP is available in the Connectionto the VIP ’ please consult the refe-rence NRJED311207EN.

battery moduleThe pocket battery module shouldonly be used during maintenanceor commissioning by qualified per-sonnel and must never be leftpermanently connected to a run-ning VIP.

12

INFORMATION- CONSEILNRJED311207EN : reference manual is available on :

INFORMATION- ADVICE

www.schneider- electric.comor call your sales representative who will put you in contact with the closet SCHNEIDER- ELECTRICservice center

07897073EN01 revision : 11 27

presentationof VIP40/45

1: Display2: Lugs for opening the

transparent protective flap3: Transparent protective flap4: Imax. peak demand display

button5: Sealing ring6: Test/Reset button7: Status LED8: Space for a user- customizable

label9: Trip fault indication LED10: Identification label11: Symbol indicating that it is

necessary to read the manual12: Battery

display H The display is an LCD unitH During operation, the displayindicates the value of the currenton each phase in successionEach phase remains displayed for3 seconds before automaticallychanging to the next. The displayis in amps, on three digits.

The display is in amps, on threedigits.NOTE: If the phase current is lessthan the pick- up current (Pleaseyou consult the referenceNRJED311207EN), the VIP is notactivated and the display is off.

lugs for opening the trans-parent protective flap

To open the flap, pull both lugssimultaneously.

The flap pivots open on its 2 bot-tom hinges.

Imax. button: peak demanddisplay

Pressing the Imax. button triggersa sequence displaying the peakdemand currents for all 3 phasesin succession.

After this sequence, the VIP auto-matically returns to displaying thephase currents.

Pictogram Color Event

Red LED permanently on: the VIP has gone into the fail- safe position following detec-tion by the embedded self- tests of the failure of one of its internal components,involving a risk of nuisance tripping. In this case, the VIP is no longer operational

NOTE: This LED may light up briefly when the VIP is energized: this is normal anddoes not indicate a failure.

LED flashing: the VIP has detected a failure not involving a risk of nuisance tripping.In this case, the VIP has not gone into the fail- safe position.Intervention is requiredas soon as possible (Please you consult the reference NRJED311207EN.) The LEDstops flashing as soon as the failure disappears.

28 07897073EN01 revision : 11

Test/Reset button After a trip, pressing this buttonstops the flashing trip indication.This button can also be used to:H test the built - in battery. Whenpressing the Test/Reset button, thefault indication LED lights upimmediately to indicate that thebattery is OK.

H perform the ’lamp test’ if therelay is supplied with power. Pres-sing the Test/Reset button for5 seconds causes all the displaysegments and the status LED tolight up, and displays the softwareversion number.

voyant d’état

space for user- customiza-ble label

There is a special space for auser- customizable label for theTrip LED.

Trip LED: fault Indication The fault indication LED flashes toindicate that the VIP has sent a triporder to the circuit breaker.Aftercircuit breaker opening, whenthe VIP is no longer supplied withpower by its sensor, the built - inbattery makes the LED flash.The LED stops flashing:H automatically after 24 hoursH when the current returns, oncircuit breaker closing (if the cur-rent is higher than the pick- upcurrent)

H when the Test/Reset button ispressedH when the pocket battery moduleis connected then disconnectedNOTE: The VIP built - in batteryonly supplies power to the faultindication LED and displays thetype of fault.It has no role in operating the pro-tection functions.

identification Label The identification label on the frontpanel is used to identify the VIP:H product nameH product referenceH serial number

symbol : necessary readingof manual

The symbol indicates that it

is necessary to read the VIP refe-rence manual before working onthe product.

1

2

3

4

5

1

2

3

4

5

6

7

VIP40 VIP45

Phase overcurrent protection adjustment dial

Setting range selector switch

Advanced settings protective cover

Connection port for the pocket battery moduleTrip test button

Phase overcurrent protection adjustment dial

Setting range selector switch

Earth fault protection set point adjustment dial

Earth fault protection time delay adjustment dial

Advanced settings protective coverConnection port for the pocket battery moduleTrip test button

07897073EN01 revision : 11 29

VIP40/45 settingsfront panel

When the protective flap is ope-ned, you can enter the protectionsettings by means of the rotaryswitches.

To do this, use a 3 mm flat bladescrewdriver

phase overcurrent protec-tion adjustment dial

The setting is entered directly inAmps using the 9- positionswitch.(I>)The selector switch has 2 gradua-ted rings.

The range is selected using thesetting range selector switch.

earth fault protectionadjustment dial

The set point is set directly inAmps using the 9- positionswitch..(Io>)The time delay setting is entereddirectly in seconds using the9- position switch.(to>)

NOTE: the earth fault protectionadjustment dials are only found onthe VIP45.

temporary display of thechanged setting

When VIP relays are energized,they display temporarily the valueof the setting after a switch haschanged position.

advanced settings To access the advanced settings,remove the advanced settings pro-tective cover.

Both settings can be entered usinga single selector switch:H discrimination with the LV CBH earth fault protection inrush cur-rent delay

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connection port for thepocket battery module

The connector is used to connectthe pocket battery module so thatthe VIPs can be energized andtested.Please consult the referenceNRJED311207ENNOTE:the pocket battery moduleshould only be used duringmaintenance or commissioning byqualified personnel and mustnever be left permanently connec-ted to a running VIP.

Trip test button The Trip test button is used fortesting VIPs.A 5 mm diameter pointed tool isneeded to activate it.More information is available in thesection describing Commissioning.Please consult the referenceNRJED311207EN

frequency The network frequency (50 Hz or60 Hz) is a parameter that must beknown for operation of the VIP40and VIP45 signal processing algo-rithms.They therefore have an automaticfrequency recognition system.The recognized value(50 Hz or 60 Hz) is stored and theVIP works permanently with thisvalue.This stored value will be used eachtime the VIP startsFor the VIP to recognize the net-work frequency and store it, it hasto detect a current on phase 1 fora minimum period of 5 seconds inthe range 50 Hz +/- 2 Hz or 60Hz +/- 2 Hz.This detection happens whenthe VIP starts.

Functions

Protection typesEarth current maximum protection Standard

Very sensitivePhase current maximum protectionThermal overload protection

Cold load pickup (low sensitivity of phase andearth current maximum protection settings)

Logic discrimination Await logic emissionAwait logic reception

External trippingMeasurementsMeasurement of earth currentMeasurement of phase currentsPhase current maximum readingsControl and monitoringCircuit breaker tripping and rearmament lockingTrip signallingTripping circuit monitoringCircuit breaker remote controlRecording of last faultRecording of last 5 eventsCommunicationModbusIEC 60870- 5- 103

Function availableFunction available depending of Sepam model

Inputs / Outputs (Number)Earth current inputsPhase current inputsRelay logic outputsLogic inputsRS 485 communication port

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For further information on theSepam series10, download thereference manual from our web-site:www.schneider- electric.com

Sepam series 10protection of HV/LV trans-formersprotection of HV networks

Sepam 10 relays fitted to RM6 cir-cuit breakers require an auxiliarypower supply.

Sepam 10A:- provides protection againstoverloads (thermal overload pro-tection), phase- phase faults andphase- earth faults.It has:- 4 logic inputs and 7 configura-ble relay outputs- a communication port

Sepam 10B:- provides protection against over-loads (thermal overload protec-tion), phase- phase faults andphase- earth faults.It has:- 3 configurable relay outputs

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earth current (ANSI50N- 51N)

Earth current maximum protectionenables overcurrents due tophase- to- earth faults to bedetected. It makes use of the mea-surement of the earth current’sfundamental component.

2 independent thresholds (Io>and Io>>)H the lower threshold (Io>) canbe set to either a definite time (DT)or an inverse time (IDMT) curve,with the choice of standardisedcurve (IEC, IEEE, RI) and the pos-sibility of activating an inverse timeduration.H the upper threshold (Io>>) hasonly a definite time (DT) setting.The minimum setting gives instan-taneous operation (ANSI 50 func-tion).

Depending on the level of sensiti-vity required, there are 2 types ofSepam:

Sensitivity Sensor

Standard 3 CT CRa 200/1 or CRb 1250/1

Very sensitive CSH200 core balance CT

phase current maximumprotection (ANSI 50- 51)

Phase current maximum protectionenables overcurrents due tophase- to- phase faults to bedetected. It makes use of the mea-surement of the fundamental com-ponent of the currents from the 3phase CTs.

2 independent thresholds (I>and I>>)H the lower threshold (I>) can beset to either a definite time (DT) oran inverse time (IDMT) curve, withthe choice of standardised curve(IEC, IEEE, RI) and the possibilityof activating an inverse time dura-tion.H the upper threshold (I>>) hasonly a definite time (DT) setting.The minimum setting gives instan-taneous operation (ANSI 50 func-tion).

thermal overload protection(ANSI 49RMS)

This protection enables cables andHV/LV transformers to be protec-ted against overloads based onthe measurement of absorbed cur-rent.This protection uses a thermalmodel based on current measure-ments to evaluate temperaturerise. The current used for this pro-tection is a 3- phase RMS currentthat takes into account up to 13thorder harmonics.

This protection has 2 settings:H maximum allowable continuouscurrent, which corresponds to themaximum thermal withstand of theequipment to be protected (thisallowable continuous current cor-responds to a temperature rise of100%)H heating/cooling time constant ofthe equipment.

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low sensitivity of phase andearth current maximumprotection settings (ColdLoad Pick- Up)

The cold load pickup functionavoids nuisance tripping when theequipment is powered- up, espe-cially after a long break in opera-tion. It allows the protection thres-holds to be temporarily increased.

High currents at cold load pic-kup may be due to:H simultaneous powering- up ofall the loads in an installation.H power transformer magnetisingcurrents.H motor starting currents.

Protection concerned Operating means

Phase current maximum protection After circuit breaker closing, the tripping thresholds (I> or I>>) areincreased or blocked for the set duration.

Earth current maximum protection After circuit breaker closing, the tripping thresholds (Io> or Io>>) areincreased or blocked for the set duration.OrThe protection is restrained by the detection of sensor saturation (measu-rement of 2nd order harmonic level).

logic discrimination(ANSI 68)

This function achieves:H tripping discrimination in theevent of a short- circuit betweenphases, or from phase to earth, forall network typesH reduced tripping time of the cir-cuit breaker that is closest to thesource.

All Sepam series 10B and 10Aare able to emit an await logicorder should a fault be detectedby the phase and earth currentmaximum protection functions.Only the Sepam series 10A isable to receive an await logicorder that blocks its trippingsignal. A safety mechanism ensu-res the protection operates in theevent of a fault with the blockingsignal wiring.

external tripping The Sepam series 10A enables,via a logic input, a tripping orderfrom an external protection meansto be taken into account.

earth current measurement This measurement enables thevalue of the fundamental compo-nent of the earth current to be dis-played.

phase current measure-ments

These measurements enable theRMS value of the phase currents tobe displayed; it takes into accountup to 13th order harmonics.

This function displays the 3 phasecurrents.

phase current maximumreadings

This function enables the largestaverage current value of each ofthe 3 phases to be displayed, aswell as giving the highest absor-bed current during load peaks.

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latching / resetting ANSI 86 Output relay latching can be confi-gured. Latch tripping orders arememorised and must be reset inorder to put the equipment backinto service.

Resetting can be done:- by pressing the Reset button;- via the Sepam 10A communica-tion port.

circuit breaker remotecontrol - Sepam 10A

This function enables remote ope-ration of the circuit breaker via thecommunication. A Sepam logicinput allows the operating mode(local or remote) to be selected.

recording of the last fault -Sepam 10B

This function enables the characte-ristics of the last fault to be dis-played. The Sepam indicates thecause of the fault, the value of thephase currents and the earth cur-rent when the fault occurred, andthe time and date of the fault.This information is memorised untilthe next fault occurs.

Cause of faults recorded: I>,I>>, Io>, Io>> and thermal pro-tection.

recording of the last 5events - Sepam 10A

This function enables the characte-ristics of the last 5 events to be dis-played. For each event, the Sepamindicates its cause, the value of the3 phase currents and the earthcurrent when the event occurred,and the time and date of the event.Events are numbered in the orderthey occur and the last 5 can bedisplayed.

The following events are recor-ded:H tripping due to I>, I>>, Io> orIo>>, thermal protectionH tripping by external inputH tripping circuit faultH circuit breaker opening and clo-sing via the communicationH tripping due to logic discrimina-tion safety protection.

communication -Sepam 10A

One RS 485 communication port.2 protocols available, chosen byconfiguration: Modbus, IEC60870- 5- 103.

Communication enables the follo-wing functions to be carried outremotely:H measurement readings,H status readingsH event readings and time- stam-ped measurements (2 tables of100 events available)H time setting and synchronisa-tionH remote control orders.

operating language When delivered, the default lan-guage is English. The followinglanguages can be selected: UKEnglish, US English, Spanish,French, Italian, German, Turkish,Portuguese.

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standard assignment ofinputs/outputs and cus-tomised configuration

The configuration is customisedusing the Sepam human-machine interface, without theneed for a PC.

Sepam 10A

Logic inputs Standard assignment Configurable

I1 Circuit breaker open No

I2 Circuit breaker closed No

I3 External tripping Yes

I4 Local- Remote Yes

Relay outputs Standard assignment Configurable

O1 Circuit breaker tripping Yes

O2 Locking of circuit breaker latching Yes

O3 Trip signalling Yes

O4 Circuit breaker remote closing Yes

O5 Await logic emission Yes

O6 Trip circuit fault signalling Yes

O7 Watchdog No

Sepam 10B

Relay outputs Standard assignment Configurable

O1 Circuit breaker tripping Yes

O2 Locking of circuit breaker latching Yes

O3 Trip signalling Yes

Pictogram Function Sepam series 10

Green lamp: Sepam powered- up

Red lamp: Sepam unavailable(Sepam in fall - back position)Yellow lamp: communication active

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human- machineinterfacefront panel

The Human- Machine Interface onthe Sepam front panel is made upof a display, indicator lamps andbuttons.

Access to the setting buttons byunauthorised personnel can beprohibited using the pivoting andlead- sealable cover. The illustra-tions below show the 2 positions ofthis cover.

1: Display2: Status indicator lamps3: Fault indicator lamps4: Zone for a customised

pictogram label of faultindicator lamps

5: Button for resetting theSepam and the maximumvalue readings

6: Identification zone7: Lead sealing ring8: Selection buttons9: Menu selection and indicator

lamp test button10: Menu pictograms11: Menu selection pointer12: Battery compartment

(Sepam series 10A)13: Settings protection cover14: Entry validation button15: Entry abort button16: Setting buttons

status indicator lamps The status indicator lamps provideinformation on the Sepam status.

Pictogram FThreshold exceeded Sepam series 10

Phase current maximum protection instantaneous thresholdexceeded (I> or I>> pickup output)

Earth current maximum protection instantaneous thresholdexceeded (Io> or Io>> pickup output)

Thermal protection alarm threshold exceeded

Fault Sepam series 10

Detection of a fault by the phase current maximum protection

Detection of a fault by the earth current maximum protectionDetection of a fault by the thermal protection

External tripping

Pictogram

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fault indicator lamps The fault indicator lamps flash asdescribed in the table below tosignal a fault:

The fault indicator lamp is latchedin standard operating mode.If, when customising the operatingmode (at the time of commissio-ning), the latching of a fault indica-tor lamp has been cancelled, thefault indicator lamp goes out assoon as the fault is no longer pre-sent.

For the first 3 lamps, they mayflash at a faster rate before the pro-tection trips to signal the followinginformation:

identification zoneThe identification zone on the frontpanel enables a Sepam to be iden-tified:

1 : Identification code2 : Reference3 : Supply voltage4 : Serial number

VIP400

VIP410

Refer to the Identification sectionfor the identification code key.

Sepam 10 familyModelB: phase and earth current maximum protectionsettingsA: phase and earth current maximum protectionsettings, logic inputs and communication portNumber of current inputs4: 3 phase current inputs + 1 earth current inputSensitivity of earth current maximum protec-tion1: standard (0.1...24 In) CT3: very sensitive (0.2...24 A and 2...240 A)CSH200Supply voltageA: 24...125 V DC and 100...120 V ACE: 110...250 V DC and 100...240 V AC

1. Press to select one of the 3menus.2. The pointer shows the selec-ted menu:

MeasurementsProtection typesParameters

3. Press and to selectthe information to be displayed.

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identificationidentification code

The identification code of a Sepamseries10 is an alphanumeric codethat defines the main functions ofthe Sepam. It is made up of seve-ral fields:

operating instructionsaccessing information

During operation, when the set-tings protection cover is closed,the user has access to the follo-wing:H reading of measurements, set-tings, protection types and para-meters.H local fault signalling.H last fault resetting.H reading of last recorded faults.H resetting of maximum values.H testing of indicator lamps andthe display.

display

1. A fault detected by the Sepamis signalled by:- a message on the display- a flashing indicator lamp2. Press to reset the fault.3. The indicator lamp goes outand the message disappears

1. Open the settings protectioncover.2. Press to select the protec-tion or parameter menu.3. Select the protection type orparameter to be set usingand .4. Enter the password if reques-ted.5. Press to select the value tobe modified.6. The selected value flashes.7. Press or to increment ordecrement the value.8. Press to validate the newvalue or press to cancel.9. The value stops flashing.

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resetting

setting instructions

CAUTION

Knowledge of electrical networkprotection is required for choosingappropriate settings.Only those people with the requi-red skills are authorised to set theSepam.Not abiding by this instructionmay cause injury and damage toequipment and property.All protection is inhibited bydefault. To make the protectionoperational, it must be activatedand set- up when commissioningthe RM6.

accessing parameters andsettings

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setting ranges The setting ranges that can beused for the lower thresholddepend on the circuit breaker type:D or B, and the type of sensors fit-ted to the RM6.

Circuit breaker type D B

Type of sensors Cra 200/1 CRb 1250/1

Functions Code ANSI

Phase current 50- 51 20- 200A 125- 630A

Earth current 50N- 51N 20- 200A 125- 630A

Very sensitive earth current 50G- 51G 2- 240A0,2- 24A2- 240A0,2- 24A

factory set parametersSepam 10A and 10B standardearth

The transformer ratios of the phaseand earth CTs (Io by summing) arefactory set. If by error you havedeleted the settings, you can findthe type of CT fitted to your RM6 inthe inspection report supplied withthe equipment and on the CT sup-port, where a label with the infor-mation can be found (see imageaside).

Sepam 10A and 10Bvery sensitive earth

The factory set measurementrange is 2- 240A; this can bechanged.

To change to the 0.2- 24A range,you should:1- Bring up Io 0.2- 24A in the

RATING screen.

2- Change the wiring at the CSHinput, terminals 11- 21 on theSepam connector marked B.

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configuring the logic inputs For the Sepam series10 A, logicinput operation must be adaptedto the type of voltage: AC or DC.The type of voltage must be confi-gured in the LOG INPUTS screenof the parameter menu. Thedefault value is DC.

accessing phase currentinputs

Connector B for connecting thecurrent sensors is a short- circui-ting connector. It can be discon-nected on- load; disconnecting itdoes not open the sensors’ secon-dary circuit. Remove the short- cir-cuiting connector without discon-necting the wires connected to it.Use another connector to connectyour generator.

B

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