User`s guide

V3-T9-232 Volume 3—Power Distribution and Control Assemblies CA08100004E—November 2013 www.eaton.com
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9.4
Metering Devices, Protective Relays, Software and Connectivity
Protective Relays
Protection Stages Tolerances
Overcurrent Protection Stages 50P(X), 51P(X)
Note
The tripping delay relates to the time between pickup and trip. The tolerance of the operating time relates to the time between the measured value has exceeded the threshold until
the protection stage is alarmed.
Description Range Step Tolerance
Pickup If the pick-up value is exceeded, the module/stage is started. 0.01–40.00 x I
n
0.01 xI
n
±1.5% of the setting value resp. 1% I
n
Resetting ratio 97% or 0.5% x I
n
——
t Tripping delay 0.00–300.00 x s 0.01 x s DEFT ±% resp. ±10 ms
Operating time Starting from l higher than 1.1 x l> — — <+35 ms
Disengaging time — — <+45 ms
t-multiplier Time multiplier/tripping characteristic factor 0.05–2.00 0.01 ±5%
IEC NINV 0.05–2.00 0.01 ±5%
IEC VINV 0.05–2.00 0.01 ±5%
IEC EINV 0.05–2.00 0.01 ±5%
IEC LINV 0.05–2.00 0.01 ±5%
ANSI MINV 0.05–2.00 0.01 ±5%
ANSI VINV 0.05–2.00 0.01 ±5%
ANSI EINV 0.05–2.00 0.01 ±5%
Flat 0.05–2.00 0.01 ±5%
It 0.05–2.00 0.01 ±5%
I
2
t 0.05–2.00 0.01 ±5%
I
4
t 0.05–2.00 0.01 ±5%
Reset mode Only available if IEC characteristics 0.00–60.00 0.01 x s ±1% resp. ±10 ms
IEC NINV 0.00–60.00 0.01 x s ±1% resp. ±10 ms
IEC VINV 0.00–60.00 0.01 x s ±1% resp. ±10 ms
IEC EINV 0.00–60.00 0.01 x s ±1% resp. ±10 ms
IEC LINV 0.00–60.00 0.01 x s ±1% resp. ±10 ms
Reset curves if ANSI characteristics — — 5%
ANSI MINV — — 5%
ANSI VINV — — 5%
ANSI EINV — — 5%
Flat — — 5%
It — — 5%
ANSI MINV — — 5%
I
2
t——5%
I
4
t——5%