3 2 4 1 AUTO SEQUENCE ® IEC 60364-6 61.3.6.2., B.3., equipment: IEC 61557- 5 Lightning system & Earth loops - Two clamps - test each loop Guide through Verification on Low-voltage electrical installations: IEC 60364-6 Insulation Resistance Line / Neutral to PE Continuity of PE conductors / conductive parts Protection by automatic disconnection of the supply Earth Electrode / Earth Loop Resistance IEC 60364-6 61.3.3., equipment: IEC 61557-2 Parameters: 500 V DC 250 V DC for PELV/SELV Limits on Circuits: R min > 1 MΩ R min > 0.5 MΩ for PELV/SELV Floor and wall resistance/impedance R > 50 kΩ (insulated) Semiconductive coatings 1 MΩ < R > 1 GΩ Protection against static electricity (EN 61340-5-1) Leakage Current - alternative method for testing and tracing insulation problems without disconnection Parameters: TRMS Low range measurement Limits: 1 mA/kW or 3.5 mA max. per app. 5 mA max. where heating app. 1/3 x Idn where RCD protected circuits. Leakage < 100 mA for fire protection. TN system - Two clamps - clamps arround main N/PE cable IEC 60364-6 61.3.2., equipment: IEC 61557- 4 Parameters: ±200 mA both directions, all exposed conductive parts to MPE and in between where distance < 2.5 m. Limits: or 2 Ω max. (where RCD built-in) Fuse: Z loop L-PE / Z line L-L, L-N IEC 60364-6 61.3.6.3., 61.3.11., equipment: IEC 61557- 3 Parameters / Limits are characteristics of particular built-in Fuse, designed for trip-out time of: 0.1s (Explosive), 0.2s (3Phase Circuits), 0.4s (1Phase systems) or 5s (fixed connections). Measured values of Impedances from the end of the circuit must be lower than Zs from the table. More Parameters/Limits could be found in Metrel Handbooks and inside Eurotest/Smartec testers. RCD: Trip out time, Trip out Current IEC 60364-6 61.3.6.1., 61.3.7., equipment: IEC 61557- 6 In (A) Tip B Tip C Tip G Ia=5x In (A) Zs=(Ω) (0,2 s) Ia=10x In (A) Zs=(Ω) (0,2 s) In (A) Zs=(Ω) (0,4 s) 2 10 22 20 11 16 13,7 4 20 11 40 5,5 32 6,8 6 30 7,3 60 3,65 47 4,6 10 50 4,4 100 2,2 82 2,6 16 80 2,8 160 1,4 110 2,0 20 100 2,2 200 1,1 147 1,4 RCD RCD trip out at differential current Id (ms) RCD Slope range (from-to) 1/2 x I∆N 1 x I∆N 2 x I∆N 5 x I∆N AC 0.5 ÷ 1.0 x I∆N General No trip t∆ < 300 t∆ < 150 t∆ < 40 A 0.35 ÷ 1.4 x I∆N Selective No trip 130 x t∆ < 500 60 x t∆ < 200 50 x t∆ < 150 B 0.5 ÷ 2.0 x I∆N Limits: Where no RCD, select limit from the FUSE characteristics, test by Z loop. Where RCD: Nominal Differntial current I∆N (mA) 10 30 100 300 500 1000 R earth (Ω) max. (Uc<25 V) 2500 833 250 833 50 25 TT system - Two wire - test from the socket N to PE IT system - Three wire - test leads to rods in triangle Limits: 2 Ω above ground 10 Ω whole system 10 Ω underground per leg or 8% of Specific Earth Resistance L1 L2 L3 PE TN N R ≤ U c I pfc 50V 200A 0,25Ω ≤ ≤ (where Fuse C20A built-in) L1 L2 L3 PE N TT L1 L2 L3 PE N TT

Guide Through Verification on Low-Voltage Electrical Installations - IEC 60364-6

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Page 1: Guide Through Verification on Low-Voltage Electrical Installations - IEC 60364-6

AUTO SEQUENCE ®

IEC 60364-6 61.3.6.2., B.3., equipment: IEC 61557- 5

Lightning system & Earth loops - Two clamps - test each loop

Guide through Verification on Low-voltage electrical installations: IEC 60364-6

Insulation Resistance Line / Neutral to PE

Continuity of PE conductors / conductive parts

Protection by automatic disconnection of the supply

Earth Electrode / Earth Loop Resistance

IEC 60364-6 61.3.3., equipment: IEC 61557-2

Parameters: 500 V DC 250 V DC for PELV/SELVLimits on Circuits: R min > 1 MΩ R min > 0.5 MΩ for PELV/SELVFloor and wall resistance/impedance R > 50 kΩ (insulated)Semiconductive coatings 1 MΩ < R > 1 GΩ Protection against static electricity (EN 61340-5-1)

Leakage Current - alternative method for testing and tracing insulation problems without disconnectionParameters: TRMS Low range measurement Limits: 1 mA/kW or 3.5 mA max. per app. 5 mA max. where heating app. 1/3 x Idn where RCD protected circuits. Leakage < 100 mA for fire protection.

TN system - Two clamps- clamps arround main N/PE cable

IEC 60364-6 61.3.2., equipment: IEC 61557- 4

Parameters:±200 mA both directions, all exposed conductive parts to MPE and in between where distance < 2.5 m.

Limits: or 2 Ω max. (where RCD built-in)

Fuse: Z loop L-PE / Z line L-L, L-N IEC 60364-6 61.3.6.3., 61.3.11., equipment: IEC 61557- 3Parameters / Limits are characteristics of particular built-in Fuse, designed for trip-out time of:0.1s (Explosive), 0.2s (3Phase Circuits), 0.4s (1Phase systems) or 5s (fixed connections). Measured values of Impedances from the end of the circuit must be lower than Zs from the table.

More Parameters/Limits could be found in Metrel Handbooks and inside Eurotest/Smartec testers.RCD: Trip out time, Trip out Current IEC 60364-6 61.3.6.1., 61.3.7., equipment: IEC 61557- 6

In(A)

Tip B Tip C Tip GIa=5xIn (A)

Zs=(Ω)(0,2 s)

Ia=10xIn (A)

Zs=(Ω)(0,2 s)

In(A)

Zs=(Ω)(0,4 s)

2 10 22 20 11 16 13,74 20 11 40 5,5 32 6,86 30 7,3 60 3,65 47 4,610 50 4,4 100 2,2 82 2,616 80 2,8 160 1,4 110 2,020 100 2,2 200 1,1 147 1,4

RCD RCD trip out at differential current Id (ms) RCD Slope range (from-to)1/2 x I∆N 1 x I∆N 2 x I∆N 5 x I∆N AC 0.5 ÷ 1.0 x I∆N

General No trip t∆ < 300 t∆ < 150 t∆ < 40 A 0.35 ÷ 1.4 x I∆NSelective No trip 130 x t∆ < 500 60 x t∆ < 200 50 x t∆ < 150 B 0.5 ÷ 2.0 x I∆N

Limits: Where no RCD, select limit from the FUSE characteristics, test by Z loop. Where RCD:Nominal Differntial current I∆N (mA) 10 30 100 300 500 1000

R earth (Ω) max. (Uc<25 V) 2500 833 250 833 50 25

TT system - Two wire- test from the socket N to PE

IT system - Three wire- test leads to rods in triangle Limits:

2 Ω above ground 10 Ω whole system 10 Ω underground per leg or 8% of Specific Earth Resistance

L2L3

PETN

R ≤Uc

Ipfc

50V200A

0,25Ω≤ ≤(where Fuse C20A built-in)

L1L2L3