GE D60 Instruction Manual page 51

2 PRODUCT DESCRIPTION
Typical times are average operate times including variables such
as frequency change instance, test method, etc., and may vary by
±0.5 cycles.
RATE OF CHANGE OF FREQUENCY
df/dt trend: increasing, decreasing, bi-directional
df/dt pickup level: 0.10 to 15.00 Hz/s in steps of 0.01
df/dt dropout level: 96% of pickup
df/dt level accuracy: 80 mHz/s or 3.5%, whichever is greater
Overvoltage supv.: 0.100 to 3.000 pu in steps of 0.001
Overcurrent supv.: 0.000 to 30.000 pu in steps of 0.001
Pickup delay: 0 to 65.535 s in steps of 0.001
Reset delay: 0 to 65.535 s in steps of 0.001
Timer accuracy: ±3% of operate time or ±1/4 cycle
(whichever is greater)
95% settling time for df/dt: <24 cycles
typically 6.5 cycles at 2  pickup
Operate time:
typically 5.5 cycles at 3  pickup
typically 4.5 cycles at 5  pickup
Typical times are average operate times including variables such
as frequency change instance, test method, etc., and may vary by
±0.5 cycles.
BREAKER FAILURE
Mode: 1-pole, 3-pole
Current supervision: phase, neutral current
Current supv. pickup: 0.001 to 30.000 pu in steps of 0.001
Current supv. dropout: 97 to 98% of pickup
Current supv. accuracy:
0.1 to 2.0  CT rating: ±0.75% of reading or ±2% of rated
(whichever is greater)
above 2  CT rating:
±2.5% of reading
BREAKER ARCING CURRENT
Principle: accumulates breaker duty (I
sures fault duration
Initiation: programmable per phase from any Flex-
Logic operand
Compensation for auxiliary relays: 0 to 65.535 s in steps of 0.001
Alarm threshold: 0 to 50000 kA2-cycle in steps of 1
Fault duration accuracy: 0.25 of a power cycle
Availability: 1 per CT bank with a minimum of 2
BREAKER FLASHOVER
Operating quantity: phase current, voltage and voltage differ-
ence
Pickup level voltage: 0 to 1.500 pu in steps of 0.001
Dropout level voltage: 97 to 98% of pickup
Pickup level current: 0 to 1.500 pu in steps of 0.001
Dropout level current: 97 to 98% of pickup
Level accuracy: ±0.5% or ±0.1% of rated, whichever is
greater
Pickup delay: 0 to 65.535 s in steps of 0.001
Timer accuracy: ±3% of operate time or ±42 ms, which-
ever is greater
<42 ms at 1.10  pickup at 60 Hz
Operate time:
GE Multilin
BREAKER RESTRIKE
Principle:
Availability:
Pickup level:
Reset delay:
SYNCHROCHECK
Max voltage difference: 0 to 400000 V in steps of 1
Max angle difference:
Max freq. difference:
Hysteresis for max. freq. diff.: 0.00 to 0.10 Hz in steps of 0.01
Dead source function:
AUTORECLOSURE
Two breakers applications
Single- and three-pole tripping schemes
Up to 4 reclose attempts before lockout
Selectable reclosing mode and breaker sequence
PILOT-AIDED SCHEMES
Direct Underreaching Transfer Trip (DUTT)
Permissive Underreaching Transfer Trip (PUTT)
Permissive Overreaching Transfer Trip (POTT)
Hybrid POTT Scheme
Directional Comparison Blocking Scheme
Directional Comparison Unblocking Scheme (DCUB)
TRIP OUTPUT
Collects trip and reclose input requests and issues outputs to con-
Communications timer delay: 0 to 65535 s in steps of 0.001
2
t) and mea-
Evolving fault timer:
Timer accuracy:
POWER SWING DETECT
Functions:
Characteristic:
Measured impedance:
Blocking / tripping modes: 2-step or 3-step
Tripping mode:
Current supervision:
Pickup level:
Dropout level:
Fwd / reverse reach (sec. ): 0.10 to 500.00  in steps of 0.01
Left and right blinders (sec. ): 0.10 to 500.00  in steps of 0.01
Impedance accuracy:
Fwd / reverse angle impedances: 40 to 90° in steps of 1
Angle accuracy:
Characteristic limit angles: 40 to 140° in steps of 1
Timers:
Timer accuracy:
D60 Line Distance Protection System
2.3 SPECIFICATIONS
detection of high-frequency overcurrent
condition ¼ cycle after breaker opens
one per CT/VT module (not including 8Z
modules)
0.1 to 2.00 pu in steps of 0.01
0.000 to 65.535 s in steps of 0.001
°
0 to 100 in steps of 1
0.00 to 2.00 Hz in steps of 0.01
None, LV1 & DV2, DV1 & LV2, DV1 or
DV2, DV1 xor DV2, DV1 & DV2
(L = Live, D = Dead)
trol tripping and reclosing.
0.000 to 65.535 s in steps of 0.001
±3% of operate time or ±1/4 cycle
(whichever is greater)
Power swing block, Out-of-step trip
Mho or Quad
Positive-sequence
Early or Delayed
0.050 to 30.000 pu in steps of 0.001
97 to 98% of pickup
±5%
±2°
0.000 to 65.535 s in steps of 0.001
±3% of operate time or ±1/4 cycle
(whichever is greater)
2
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