RFP for Testing of Power Transformer at Sec-83 and Sec-153 Receiving substation, Testing of relays and calibration of testing kits under PSI department of NMRC for Two Years

Amount

2-years Contract for Relay Testing, calibration of testing kits and Condition monitoring of 8 nos of Power Transformers installed in RSS(Sec-83 RSS & Sec-153 RSS) at Noida Metro Rail Corporation which comprehend 4 nos of Traction Transformer (132/25 kV, rating- 21.6/30 MVA ONAN/ONAF) 4 nos of Auxiliary Transformer (132/33 kV, rating- 10/15 MVA ONAN/ONAF) (There are 2 nos of Traction Transformers and 2 nos of Auxiliary Transformers in each RSS)

General Points

a)-Oil testing laboratory should be NABL accredited

b)-The lab should also have IS-6855 accredited sampling procedure

c)-Relay Test Kit:-3-phase secondary current injection test kit of OMICRON/ DOBEL/ Megger make

d)-For testing the equipment like Transformer the contractor shall ensure readiness of equipment for testing ,however shutdown shall be provided by employer

e)-Visit charge shall as per activity completion, material shall be provided by employer

f)-In-case of breakdown the contractor engineer shall visit within 24 hours of reporting via call/sms/e-mail

g)-Scope of testing of relays shall be as per tentative sample reports attached

A-Detailed Scope of work for Conditioning Monitoring of Power Transformer(s)

Measure of winding insulation resistance value of Power Transformer. (Measure IR at 60 sec & 10 sec) and calculate PI Index (IR at 60 sec/ IR at 10 sec.) (Scope- Testing, Periodicity- half yearly)

Power Transformer Testing of Oil as per oil parameters- As per relevant IS- 1866

Oil Testing of Main Tank of Power Transformer:-which will include :-BDV (break Down Voltage); (Dissolve Gas Analysis:-Methane, Acetylene, Ethylene, Ethane, Hydrogen, Carbon Monoxide & Carbon Dioxiode); PPM (water content); Acidity (Neutralization Value); Resistivity(Specific Resitance), Dielectric Dissipiation Factor(Tan Delta) (Scope- Testing, Periodicity- half yearly)

Oil Testing of OLTC of Power Transformer:- which will include :-BDV (break Down Voltage); (Dissolve Gas Analysis of gases :-Methane, Acetylene, Ethylene, Ethane, Hydrogen, Carbon Monoxide & Carbon Dioxiode); PPM (water content); Acidity (Neutralization Value; Resistivity(Specific Resitance), Dielectric Dissipiation Factor(Tan Delta) (Scope- Testing, Periodicity- half yearly)

* Contractor has to submit the detail report analysis as well as trend analysis report of the Oil Test along with test report of testing from NABL accredited Lab

Power Transformer Electrical Testing-As per relevant IS- 1866

Carry out Tan delta and capacitance measurement of bushing (of Power Transformer) and of windings (of power Transformer) (Scope- Testing, Periodicity- Yearly)

Magnetic balance test (Scope- Testing, Periodicity- As per requirement)

Magnetic current test (Scope- Testing, Periodicity- As per requirement)

Measurement of winding resistance at all taps (Scope- Testing, Periodicity- As per requirement)

Measurement of voltage ratio at all taps (Scope- Testing, Periodicity- As per requirement)

On line Partial Discharge measurement (Scope- Testing, Periodicity- As per requirement)

Visit pertaining to any breakdown (Visit charge shall as per activity, material shall be provided by employer) (Scope- Visit, Periodicity- As per requirement)

C-Testing of SIEMENS make relay(s) installed at various locations.

22 no. ASS

7SD80 (Line Differential) (testing parameters:- Differential Protection) (Annexure-A) (Scope- Testing, Periodicity- Yearly)

7SR11 (O/C & Earth Fault) (testing parameters:- overcurrent and earth fault) (Annexure-B) (Scope- Testing, Periodicity- Yearly)

7SR12 (O/C & Earth Fault) (testing parameters:- overcurrent and earth fault) (Annexure-C) (Scope- Testing, Periodicity- Yearly)

7ST61 (Distance Protection) (testing parameters:- Distance protection) (Annexure-D) (Scope- Testing, Periodicity- Yearly)

2 no. RSS

7ST63 (Distance Protection)(testing parameters:-Over current, PFR(panto flashover),auto recloser,Distance,BCU,WPC) (Annexure-E) (Scope- Testing, Periodicity- Yearly)

7SJ80 (Senstive earth fault/VDOC/50BF/ reverse power protection) (Annexure-F) (Scope- Testing, Periodicity- Yearly)

7SJ64 (BCU,Bay control unit protection132kV)( testing parameters:- Overcurrent, Earth Fault and Bay control Unit protection) (Annexure-G) (Scope- Testing, Periodicity- Yearly)

7SD52 (Line Differential) (testing parameters :- Distance, Differential) (Annexure-H) (Scope- Testing, Periodicity- Yearly)

7UT63 (Transformer Differential) (testing parameters:- Transformer Differential, tank earth fault, Restricted Earth Fault, buchholz,OTI,OSR,PRD Valve) (Annexure-I) (Scope- Testing, Periodicity- Yearly)

7SJ66 (O/C & Earth Fault)(Testing parameters:-over current, under voltage,BCU) (Annexure-J) (Scope- Testing, Periodicity- Yearly)

7SS85 (Bus Bar protection) (Scope- Testing, Periodicity- Yearly)

6MD85 (BCU( LT Side) (Scope- Testing, Periodicity- Yearly)

Relay at incomer side of both RSS

7SD5/87 (Line Differential) (testing parameters:- differential protection) (Annexure-K) (Scope- Testing, Periodicity- Yearly)

**Tentative Performa of Relay testing for Relays mentioned above is attached from Annexure-A to Annexure-K

D-Callibration of following testing kits from NABL accredited laboratory (Scope- Calibration, Periodicity- Yearly)

Meggar (5kV) motwani make

Hi-pot tester for cables upto 220kV level (technology products)

Tan - Delta tester (shivnanda electronics)

Primary injection kit, rated output of 3000A at 3V, 1500A at 6V and 750V at12V , motwani make

Secondary injection kit with a continuously variable voltage of 0-250 VAC (capacity 2A) or 0-500VAC (capacity 1A), motwani make

CT/PT accuracy tester (Udeyraj)

Resonance circuit high voltage test kit (Applied techno products)

Thermal imaging camera (Flir make)

Cable fault detector (telemetrics equipments)

Digital earth resistance meter (motwani make)

Time interval meter (motwani make)

Contact resistance meter (motwani make)

M.J.ENGINEERING

OASIS TECHNO ENGINEERS Pvt. Ltd.