1. Technical Requirements for Instrument Transformers:
Design: Low-voltage configuration.
Operating Voltage: 0.72 kV.
Test Voltage: 3 kV.
Thermal Current (Ith): 60 times the primary current (Ipp).
Dynamic Current (Idyn): 2.5 times Ith.
Accuracy Class: 0.2S.
Certification: Calibrated and certified.
Terminals: Equipped with screw terminals.
Sealing Cover Options:
Mounting on a single-core cable, or
Mounting on multi-core cable strands, or
Mounting on busbars.
Warranty: 36 months from the delivery date.
Calibration Certificate: Must be provided in both paper and electronic format.
2. Types of Instrument Transformers Covered by RFQ and Estimated Quantities:
Part I
Type
Estimated Quantity (units)
50/5 A/A; 5VA; FS5 with current outlet
480 units
100/5 A/A; 5VA; FS5, S30
300 units
150/5 A/A; 5VA; FS5, S30
300 units
200/5 A/A; 5VA; FS5, S30
600 units
200/5 A/A; 5VA; FS5, S40
600 units
250/5 A/A; 5VA; FS5, S40
300 units
250/5 A/A; 5VA; FS5, S60
90 units
300/5 A/A; 5VA; FS5, S40
90 units
400/5 A/A; 5VA; FS5, S40
600 units
400/5 A/A; 5VA; FS5, S60
600 units
600/5 A/A; 5VA; FS5, S40
600 units
600/5 A/A; 5VA; FS5, S60
420 units
1000/5 A/A; 5VA; FS5, S60
420 units
Part II
Type
Estimated Quantity (units)
125/5 A/A; 5VA; FS5, S40
90 units
150/5 A/A; 5VA; FS5, S40
600 units
200/5 A/A; 5VA; FS5, S60
600 units
Note: Quantities are based on estimated needs, and final orders may be lower than these projections.