Essential Ge Multilin 745-w2-p5-g5-hi-a-l-r-e-h Transformer Management Relay Best Choice [bCfjheNg]

Overview

The 745-W2-P5-G5-HI-A-L-R-E-H is a GE Multilin Transformer Management Relay designed for protection and control of two- or three-winding transformers.

Frequency and Transformer Compatibility

• Transformers Supported: Two-winding or three-winding

• Frequency: 50 or 60 Hz nominal

• Frequency Tracking:

• 40 to 65 Hz for 0.05 × CT < current ≤ 1 × CT

• 5 to 65 Hz for current > 1 × CT

• 2 to 65 Hz for voltage > 50% of VT (voltage sensing enabled)

Percent Differential Settings

• Operating Current Pickup: 0.05 to 1.00 × CT (step 0.01)

• Dropout Level: 97 to 98% of pickup

• Slope 1 Range: 15% to 100% (step 1)

• Slope 2 Range: 50% to 100% (step 1)

• Slope-1 Kneepoint (KP): 1.0 to 20.0 × CT (step 0.1)

• Harmonic Restraint: 0.1 to 65.0% (step 0.1)

Relay Output Timing (ms)

• Solid State Output Operate Time:

• Pickup < 1 × CT: 42 to 52

• 1 × CT < Pickup < 1.1 × Kneepoint: 34 to 44

• Pickup > 1.1 × Kneepoint: 26 to 36

• Relay Outputs 2 to 5 Operate Time:

• Pickup < 1 × CT: 46 to 56

• 1 × CT < Pickup < 1.1 × Kneepoint: 38 to 48

• Pickup > 1.1 × Kneepoint: 30 to 40