Tender for Station Transformer Differential Relays
Tender Overview
Project Description
Station Transformer Differential Relays , Transformer Differential Relay For 3 Windings With Configurable 16 No Binary Inputs Rated For 220 V Dc, Configurable 24 Binary Outputs Rated For 220 V Dc, Auxillary Voltage Is 220V DC, 16 Configurable Leds,Time Syn With Binary Input Or IRIG-B Signal,With 3 Winding Differential Protection With Zero Sequence Filters ,Inrush Current Detector, 3 No Restricted Earth Fault Protection,Over Fluxing Protection, Definte Time And Inverse Time Over Current Protection, 12 Current Inputs Rated For 1 A CT Secondary , 3 Voltages Rated For 110 V AC PT Secondary .Compatable With IEC61850, With Front Port For Relay Communication. Technical Details Of Transformer No 1 (ST 6B) 3 No Of CURRENTS: 2500/1A ,CLASS : PS From 11.5 Kv Side 1 No Of CURRENT For HIGH IMPEDANCE REF :2500/1A CLASS : PS From 11.5 Kv Side 3 No Of CURRENTS: 2500/1A ,CLASS : PS From 11.5 Kv Side 1 No Of CURRENT For HIGH IMPEDANCE REF : 2500 /1A CLASS :PS From 11.5 Kv Side 3 No Of CURRENTS: 1000/1A ,CLASS : PS From 400 Kv Side 1 No Of CURRENT For HIGH IMPEDANCE REF : 250/1 A , CLASS PS From 400 Kv Side TRANSFORMER RATIO: 400KV/11.5 Kv/11.5 Kv , 80 MVA , TRANSFORMER DIFFERENTIAL RELAY FOR 2 WINDINGS WITH CONFIGURABLE 16 NO BINARY INPUTS RATED FOR 220 V DC, CONFIGURABLE 24 BINARY OUTPUTS RATED FOR 220 V DC, AUXILLARY VOLTAGE IS 220V DC, 16 CONFIGURABLE LEDS,TIME SYN WIH BINARY INPUT OR IRIG-B SIGNAL,WITH 2 WINDING DIFFERENTIAL PROTECTION ,ZERO SEQUENCE FILTERS ,INRUSH CURRENT DETECTOR , 3 NO CURRENTS FOR HIGH IMPEDANCE RESTRICTED EARTH FAULT PROTECTION,OVER FLUXING PROTECTION, DEFINTE TIME AND INVERSE TIME OVER CURR ENT PROTECTION, 12 CURRENT INPUTS RATED FOR 1 A CT SECONDARY , 3 VOLTAGES RATED FOR 110 V AC PT SECONDARY..COMPATABLE WITH IEC61850, WITH FRONT PORT FOR RELAY COMMUNICATION. Technical Details Of Transformer No 1 (ST 6A) 3 No Of CURRENTS: 500/1A ,CLASS : PS From 220 Kv Side 1 No Of CURRENT For HIGH IMPEDANCE REF : 300/1A CLASS : PS From 220 Kv Side 3 No Of CURRENTS: 2750/1A ,CLASS : PS From 11.5 Kv Side 1 No Of CURRENT For HIGH IMPEDANCE REF : 3000/1A CLASS :PS From 11.5 Kv Side TRANSFORMER RATIO: 220KV/11.5 Kv , 50 MVA
Corrigendum
| Sr No | Corrigendum Date | Corrigendum | Type | New Submission Date |
|---|---|---|---|---|
| 1 | 22-Aug-2026 | Due date extension for first time | 02-Sep-2026 | |
| 2 | 11-Sep-2026 | Due date extension for second time | 23-Sep-2026 |
BOQ
| Sl. No. | Item Name |
| 1 | Transformer differential relay for 3 windings with configurable 16 no binary inputs rated for 220 V dc, configurable 24 binary outputs rated for 220 V Dc, auxillary voltage is 220v DC, 16 configurable LEDs,Time syn with binary input or IRIG-B signal,with 3 winding differential protection with zero sequence filters ,inrush current detector, 3 no restricted earth fault protection,over fluxing protection, definte time and inverse time over current protection, 12 current inputs rated for 1 A CT secondary , 3 voltages rated for 110 v AC PT secondary .compatable with IEC61850, with front port for relay communication. Technical details of transformer no 1 (ST 6B) 3 no of CURRENTS: 2500/1A ,CLASS : PS from 11.5 kv side 1 no of CURRENT for HIGH IMPEDANCE REF :2500/1A CLASS : PS from 11.5 kv side 3 no of CURRENTS: 2500/1A ,CLASS : PS from 11.5 kv side 1 no of CURRENT for HIGH IMPEDANCE REF : 2500 /1A CLASS :PS from 11.5 kv side 3 no of CURRENTS: 1000/1A ,CLASS : PS from 400 kv side 1 no of CURRENT for HIGH IMPEDANCE REF : 250/1 A , CLASS PS from 400 kv side TRANSFORMER RATIO: 400KV/11.5 kv/11.5 kv , 80 MVA |
| 2 | TRANSFORMER DIFFERENTIAL RELAY FOR 2 WINDINGS WITH CONFIGURABLE 16 NOBINARY INPUTS RATED FOR 220 V DC, CONFIGURABLE 24 BINARY OUTPUTS RATEDFOR 220 V DC, AUXILLARY VOLTAGE IS 220V DC, 16 CONFIGURABLE LEDS,TIMESYN WIH BINARY INPUT OR IRIG-B SIGNAL,WITH 2 WINDING DIFFERENTIALPROTECTION ,ZERO SEQUENCE FILTERS ,INRUSH CURRENT DETECTOR , 3 NO CURRENTS FOR HIGH IMPEDANCE RESTRICTED EARTH FAULT PROTECTION,OVER FLUXING PROTECTION, DEFINTE TIME AND INVERSE TIME OVER CURR ENT PROTECTION, 12 CURRENT INPUTS RATED FOR 1 A CT SECONDARY , 3 VOLTAGES RATED FOR 110 V AC PT SECONDARY..COMPATABLE WITH IEC61850, WITH FRONT PORT FOR RELAY COMMUNICATION. Technical details of transformer no 1 (ST 6A) 3 no of CURRENTS: 500/1A ,CLASS : PS from 220 kv side 1 no of CURRENT for HIGH IMPEDANCE REF : 300/1A CLASS : PS from 220 kv side 3 no of CURRENTS: 2750/1A ,CLASS : PS from 11.5 kv side 1 no of CURRENT for HIGH IMPEDANCE REF : 3000/1A CLASS :PS from 11.5 kv side TRANSFORMER RATIO: 220KV/11.5 kv , 50 MVA |
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