M13266-2 v9
Table 40. Thermal overload protection, two time constants TRPTTR
Function
Range or value
Accuracy
Base current 1 and 2
(30–250)% of
IBase
±1.0% of I
r
Operate time:
2
2
2
2
p
Trip
I
I
t
ln
I
I
σ
∑
⌡
,
< √
,
EQUATION1356 V3 EN-US
(Equation 2)
I = actual measured current
Ip = load current before overload
occurs
ITrip = steady state operate
current level in % of
IBasex
Time constant τ = (0.10–500.00)
minutes
±5.0% or ±200 ms whichever is greater
Alarm level 1 and 2
(50–99)% of heat content
operate value
±2.0% of heat content trip
Operate current
(50–250)% of
IBase
±1.0% of I
r
Reset level temperature
(10–95)% of heat content trip
±2.0% of heat content trip
M12353-1 v15
Table 41. Breaker failure protection, 3-phase activation and output CCRBRF
Function
Range or value
Accuracy
Operate phase current
(5-200)% of
lBase
±1.0% of I
r
at I
£
I
r
±1.0% of I at I > I
r
Reset ratio, phase current
> 95%
-
Operate residual current
(2-200)% of
lBase
±1.0% of I
r
at I
£
I
r
±1.0% of I at I > I
r
Reset ratio, residual current
> 95%
-
Phase current level for blocking of contact function (5-200)% of
lBase
±1.0% of I
r
at I
£
I
r
±1.0% of I at I > I
r
Reset ratio
> 95%
-
Operate time for current detection
10 ms typically
-
Reset time for current detection
10 ms maximum *
-
Time delay for retrip at 0 to 2 x I
set
(0.000-60.000) s
±0.2% or ±15 ms whichever is greater
Time delay for backup trip at 0 to 2 x I
set
(0.000-60.000) s
±0.2% or ±15 ms whichever is greater
Time delay for backup trip at multi-phase start at 0
to 2 x I
set
(0.000-60.000) s
±0.2% or ±20 ms whichever is greater
Additional time delay for a second backup trip at 0
to 2 x I
set
(0.000-60.000) s
±0.2% or ±20 ms whichever is greater
Time delay for alarm for faulty circuit breaker
(0.000-60.000) s
±0.2% or ±15 ms whichever is greater
Minimum trip pulse duration
(0.010-60.000) s
±0.2% or ±5 ms whichever is greater
* Valid for product version 2.2.3 or later
Line distance protection REL650
1MRK 506 384-BEN H
Version 2.2
Hitachi Power Grids
63
© 2017 - 2021 Hitachi Power Grids. All rights reserved
Содержание REL650 series
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