Eaton Cutler-Hammer FP-5000 - Page 55

Page 5-7
IL17569
Effective June, 2001
Table 5.2 IR Residual OC: Calculated residual time overcurrent (51R) and instantaneous (50R-1 & 50R-2)
device settings
Display Setting Description Setpoint Range/ Default Selected Refer to
Value Selection Setting Value Sec. #
51R IR TOC Curve Calculated Residual Time 5.5.2.3
Overcurrent Curve Setting 8.3
Shape: Select curve characteristic shape IT, I2T, I4T, FLAT, MOD, XTRM
13.4
VERY, XTRM, IECA,
IECB, IECC
Reset: Select curve reset characteristics Inst, Calc, T Delay Inst
Direction: Directional control reserved (Fixed at Both) Both
for future use
51R IR TOC Calculated Residual Time 5.5.2.3
Setting Overcurrent Pickup and Time 8.3
Multiplier Settings
Pickup: Select current pickup value 0.1 to 4.0 pu, or Disable 0.10
in per unit values (x I
nom
) (0.01 increments)
Time Mult: Select time multiplier 0.05 to 10.0 1.00
(0.01 increments)
50R-1 IR IOC 1 Calculated Residual 5.5.2.3
Overcurrent Element #1 Setting 8.3
Pickup: Select current pickup value 0.1 to 20.0 pu, or Disable 1.00
in per unit values (x I
nom
) (0.01 increments)
Delay (c): Select delay time in cycles 0 to 9999 60
(1 cycle increments)
Direction: Directional control reserved (Fixed at Both) Both
for future use
50R-1 IR IOC 2 Calculated Residual 5.5.2.3
Overcurrent Element #2 Setting 8.3
Pickup: Select current pickup value 0.1 to 20.0 pu, or Disable 2.00
in per unit values (x I
nom
) (0.01 increments)
Delay (c): Select delay time in cycles 0 to 9999 cycles 600
(1 cycle increments)
Direction: Directional control reserved (Fixed at Both) Both
for future use
Table 5.2 Unbalance Setting: Selects voltage (47-1) unbalance and current (46-1) unbalance device settings
47-1 Voltage Voltage Unbalance Settings 5.5.2.4
Unbal 8.6.1
Threshold: Select magnitude of unbalance 1 to 100 volts, or Disable Disable
required (either V1 or V2) (1 volt increments)
% (V2/V1): Percent negative sequence (V2) 4 to 40 percent 20
divided by positive sequence (V1) (1% increments)
Delay (c): Select delay time in cycles 0 to 9999 cycles 600
(1 cycle increments)