Numerical generator protection
ABB Switzerland Ltd
Utility Automation
REG316*4
1MRK502004-Ben
Page 29
Ancillary functions
Table 43: Delay/integrator
Table 44: Plausibility check
Table 42: Logic
Logic for 4 binary inputs with the following 3 configurations:
1. OR gate
2. AND gate
3. Bistable flip-flop with 2 set and 2 reset inputs (both OR gates), resetting takes priority
All configurations have an additional blocking input.
Provision for inverting all inputs.
·
For delaying pick-up or reset or for integrating 1 binary signal
·
Provision for inverting the input
Settings:
Pick-up or reset time
0 to 300 s in steps of 0.01 s
Integration
yes/no
A plausibility check function is provided for each three-phase current and three-phase voltage input which
performs the following:
·
Determination of the sum and phase sequence of the 3 phase currents or voltages
·
Provision for comparison of the sum of the phase values with a corresponding current or voltage sum
applied to an input
·
Function blocks for currents exceeding 2 x I
N,
respectively voltages exceeding 1.2 U
N
Accuracy of the pick-up setting at rated frequency
±2% I
N
(at 0.2 to 1.2 I
N
±2% U
N
(at 0.2 to 1.2 U
N
Reset ratio
>90%
>95% (at U >0.1 U
N
or I >0.1 I
N
)
Current plausibility settings:
Pick-up differential for sum of internal summation current
or between internal and external summation currents
0.05 to 1.00 I
N
in steps
of 0.05 I
N
Amplitude compensation for summation c.t.
-2.00 to +2.00 in steps of 0.01
Delay
0.1 to 60 s in steps of 0.1 s
Voltage plausibility settings:
Pick-up differential for sum of internal summation voltage
or between internal and external summation voltages
0.05 to 1.2 U
N
in steps of 0.05 U
N
Amplitude compensation for summation v.t.
- 2.00 to +2.00 in steps of 0.01
Delay
0.1 to 60 s in steps of 0.1 s
Table 45: Run-time supervision
The run-time supervision feature enables checking the opening and closing of all kinds of breakers (cir-
cuit-breakers, isolators, ground switches...). Failure of a breaker to open or close within an adjustable time
results in the creation of a corresponding signal for further processing.
Settings
Setting time
0 to 60 s in steps of 0.01 s
Accuracy of run time supervision
±2 ms
Summary of Contents for REG316 4 Series
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Page 427: ...REG 316 4 1MRB520049 Uen Rev B ABB Switzerland Ltd 4 29 Fig 4 13 Locus of the load angle d 90 ...
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