Ro Le Qua Dong Khong Huong 50,51

7/29/2019 Ro Le Qua Dong Khong Huong 50,51

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HCMC PC SPECIFICATION

DIGITAL NON DIRECTIONAL OVER CURRENT RELAY (50/51 ABCN)

I. SCOPE :

This specification shall be applicable to non directional over current relay(50/51 ABCN).

II. STANDARD OF MANUFACTURE AND TEST :IEC 255 : Electric relays.

III. DESCRIPTION :

1. Construction :- The relay should operate on the basis of numeral measuring principle.- Display : Liquid crystal type.- Terminals: Plug - in screw type.- The relay consists of a case used for flush mounting.

2. Technical data :- Functions of non directional protection :

+ Phase fault protection.+ Earth fault protection.+ Circuit breaker failure and back-trip.+ Comprehensive self-checking and alarms.+ Integral event recorder accessible from PC.+ Flexible operating logic options via software function links.+ Numerical display of setting values, measured values, recorded fault

values, ...- Protective curves : It shall have the instantaneous, inverse definite

minimum time overcurrent protection (inverse, very inverse, extremelyinverse).

- DC supply : 90 240 Vdc.Tenderer may quote the relay with operating voltage of 110Vdc 10%and the voltage divider to be able to supply the operating voltage of220Vdc to the relay.

- Rated current (In) : 1A.- Rated frequency : 50 Hz.- Thermal withstand capability in current circuit :

+ Continuous : 04 x In+ for 3s : 10 x In

+ for 1s : 100 x In- Dynamic current withstand : 250 x In- Make and carry for tripping duty : 30A / 0.5s- Minimum operating time : < 30 ms- Return time :


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3. Accessory :- 01 test block 14 circuits, 10A-240VDC

+ Test block offers facilities for monitoring and secondary injectiontesting and power system protection scheme when used with test

plug.+ Test block can be fixed to relay without addition any equipment.

- 01 test plug 14 circuits, 10A-240VDC- All other accessories for the installation and operation.

IV/. TESTING REQUIREMENT :

- The relay is subject to inspection during manufacturing. Routine andtype tests of each relay including operational test at minimum, accuracytests will be performed according to IEC 255 standard.- In order to ensure the quality of supplied goods , in case of bid winning

, the Tenderer shall supply routine test and copies of type test reportmet the following requirements:a. Routine test shall be performed for each equipment.b. Type test report shall meet the followings :

- Testing sample : The same as the supplied item (manufacturer,original country, manufactures code as specified in tender document).

- Testing items : Including testing items according to IEC 255.- Testing values shall be corresponding values as stated in Section III

of this specification. If in section III, there are no corresponding values,testing values will be selected according to the standard specified insection II of this specification.

V/. REQUIREMENT OF TECHNICAL TENDER DOCUMENT :

- Technical description, data sheets, catalogues and other materialsubmitted with the quotation must enable the buyer's engineers tothoroughly evaluate the proposals as to its compliance with the inquiryspecifications.- Minimum requirements :

+ Detailed summary of deviations to inquiry specification.+ Completed inquiry data sheet expressed at clause VI.+ Brochures and catalogues containing outline dimensions, main

electrical data

and installation details.+ Certificate of quality management.

- The proposal bidding has Type Test Report which meets therequirements as specified in item IV 2.b will be preferable.

VI/. DATA SHEET :

No DESCRIPTION REQUIREMENTS TENDERED

1. Item No.2. Manufacturer3. Country

4. Manufactures code5. Standards of factory andtest

IEC 255

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6. Standards of qualitymanagement

7. Member approve ofcertificate of management

8. In case of bid winning , theTenderer shall supplyroutine test and copies oftype test report met therequirements of section IV .

Yes

9. Type microprocessor10.

Display LCD

11.

Terminals Plug-in screw type

12.

Case flush mounting

13.

- Functions of non directionalprotection :+ Phase fault protection.+ Earth fault protection.+ Circuit breaker failure

and back-trip.+ Comprehensive self-

checking and alarms.+ Integral event recorder

accessible from PC.+ Flexible operating logic

options via software functionlinks.

+ Numerical display ofsetting values, measuredvalues, recorded faultvalues, ...

YesYesYes

Yes

Yes

Yes

Yes

14.

Protective curves : - instantaneous- inverse definite

minimum timeovercurrentprotection (inverse,very inverse,extremely inverse).

15.

DC supply 90 240Vdc

Note :Tenderer may quote therelay with operatingvoltage of 110Vdc 10%

and the voltage divider tobe able to supply theoperating voltage of



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220Vdc to the relay.16.

Input circuit :+ Rated current+ Rated frequency

1A50 Hz

17.

Thermal withstand abilityin current circuit :

+ Continuous 4 x In+ For 3s 10 x In+ For 1s 100 x In

18 Dynamic current withstand 250 x In19 Minimum operating time < 30 ms20 Reset time < 30 ms21 Accuracy of current value 5% of set value

Accuracy of time value 5% of set value

22 Make and carry for trippingduty

30A / 0.5s

23 Contacts :+ Alarm+ Trip

Individual per function2NO + 2NC2NO + 2NC

24 Ambient temperature 0-55C25 Humidity 0-95%26 Accessories :

- 01 test block 14 circuits,10A-240VDC

- 01 test plug 14 circuits,

10A-240VDC- All other accessories for

the installation andoperation.

Yes

+ Test block offersfacilities formonitoring andsecondary injectiontesting and powersystem protectionscheme when usedwith test plug.+ Test block can befixed to relaywithout addition anyequipment.

Yes

Yes


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Ro Le Qua Dong Khong Huong 50,51