GE Multilin | 350-C-P5-G5-H-S-M-N-P-SN-D-N | Intuitive and Innovative Feeder Protection

Technical specification:

Master Reset Password:

• Length: 8 to 10 alphanumeric characters

Settings Password:

• Length: 3 to 10 alphanumeric characters
• Purpose: Local and remote access

Control Password:

• Length: 3 to 10 alphanumeric characters
• Purpose: Local and remote access

Overcurrent Settings

Phase/Neutral/Ground/Negative Sequence Time Overcurrent (51P/51N/51G/51_2):

• Pickup Level: 0.05 to 20.00 x CT in steps of 0.01 x CT
• Dropout Level:
  • 97% of Pickup @ I > 1 x CT
  • 0.02 x CT @ I < 1 x CT
• Curve Shape:
  • ANSI: Extremely/Very/Moderately/Normally Inverse
  • Definite Time: 0.1 s base curve
  • IEC: Curve A/B/C/Short Inverse
  • IAC: Extreme/Very/Inverse/Short Inverse
  • User Curve: FlexCurve™ A/B (programmable curves)
• Curve Multiplier: 0.05 to 50.00 in steps of 0.01
• Reset Time: Instantaneous, Linear Time Delay
• Accuracy:
  • ±3% of expected inverse time or 1.5 cycle, whichever is greater, from pickup to operate
• Level Accuracy: Per CT input

Sensitive Ground Time Overcurrent (51SG)

• Pickup Level: 0.005 to 3.000 x CT in steps of 0.001 x CT
• Dropout Level:
  • 97% of Pickup @ I > 0.1 x CT
  • 0.002 x CT @ I < 0.1 x CT
• Curve Shape:
  • ANSI: Extremely/Very/Moderately/Normally Inverse
  • Definite Time: 0.1 s base curve
  • IEC: Curve A/B/C/Short Inverse
  • IAC: Extreme/Very/Inverse/Short Inverse
  • User Curve: FlexCurve™ A/B
• Curve Multiplier: 0.05 to 50.00 in steps of 0.01
• Reset Time: Instantaneous, Linear Time Delay
• Accuracy:
  • ±3% of expected inverse time or 1 cycle, whichever is greater, from pickup to operate
• Level Accuracy: Per CT input

Instantaneous Overcurrent Settings

Phase/Neutral/Ground/Negative Sequence Instantaneous Overcurrent (50P/50N/50G/50_2):

• Pickup Level: 0.05 to 20.00 x CT in steps of 0.01 x CT
• Dropout Level:
  • 97% of Pickup @ I > 1 x CT
  • 0.02 x CT @ I <1 x CT
• Time Delay: 0.00 to 300.00 sec in steps of 0.01
• Operate Time:
  • <30 ms @ 60Hz (I > 2.0 x PKP, No time delay)
  • <35 ms @ 50Hz (I > 2.0 x PKP, No time delay)
• Time Delay Accuracy:
  • 1% or 1 cycle, whichever is greater (Time Delay selected)
• Level Accuracy: Per CT input

Sensitive Ground Instantaneous Overcurrent (50SG)

• Pickup Level: 0.005 to 3.000 x CT in steps of 0.001 x CT
• Dropout Level:
  • 97% of Pickup @ I > 0.1 x CT
  • 0.002 x CT @ I < 0.1 x CT
• Time Delay: 0.00 to 300.00 sec in steps of 0.01
• Operate Time:
  • <30 ms @ 60Hz (I > 2.0 x PKP, No time delay)
  • <35 ms @ 50Hz (I > 2.0 x PKP, No time delay)
• Time Delay Accuracy:
  • 1% or 1 cycle, whichever is greater (Time Delay selected)
• Level Accuracy: Per CT input

Phase Directional (67P)

• Directionality: Co-existing forward and reverse
• Operating: Phase Current (Ia, Ib, Ic)
• Polarizing Voltage: Quadrature Voltage
  • ABC phase sequence: Vbc, Vca, Vab
  • CBA phase sequence: Vcb, Vac, Vba
• Polarizing Voltage Threshold: 0.05 to 1.25 x VT in steps of 0.01
• MTA: From 0º to 359º in steps of 1°
• Angle Accuracy: ±4º
• Operation Delay: 20 to 30 ms