SPRCHRD
BLOCK
BLKALM
Spring charging
time
measurement
Alarm limit
Check
SPRCHRST
RSTSPCHT
SPCHT
SPCHALM
IEC12000621 V2 EN-US
Figure 216:
Functional module diagram for circuit breaker spring charge indication
Spring charging time measurement
Spring charging time calculation will be initiated as soon as the circuit breaker is
closed and charging motor starts (
NO
contact of the device is connected to
SPRCHRST
)
to store the energy in the close spring. An indicator provided in the circuit breaker is
displayed when the spring is completely charged. This status is taken through
NO
contact and then connected to
SPRCHRD
.
The binary input
SPRCHRST
indicates the pickup of circuit breaker spring charging
time.
SPRCHRD
indicates that the circuit breaker spring is charged. The spring
charging time is calculated from the difference of these two signal timings. Spring
charging indication is described in figure
The last measured spring charging time
SPCHT
is provided as a service value. The
spring charging time
SPCHT
can be reset on the LHMI or by activating the input
RSTSPCHT
.
Alarm limit check
If the time taken by the spring to charge is more than the value set with the
SpChAlmTime
setting, the subfunction generates the
SPCHALM
alarm.
It is possible to block the
SPCHALM
alarm signal by activating the
BLKALM
binary
input.
16.4.7.8
Circuit breaker gas pressure indication
GUID-9D070D52-B499-4D45-9195-60181819184E v10
The circuit breaker gas pressure indication subfunction monitors the gas pressure
inside the arc chamber. The operation is described in figure
1MRK 511 408-UUS A
Section 16
Monitoring
Phasor measurement unit RES670 2.2 ANSI
545
Technical manual
Summary of Contents for Relion RES670
Page 1: ...RELION 670 SERIES Phasor measurement unit RES670 Version 2 2 ANSI Technical manual ...
Page 2: ......
Page 276: ...270 ...
Page 306: ...300 ...
Page 360: ...354 ...
Page 406: ...400 ...
Page 614: ...608 ...
Page 732: ...726 ...
Page 748: ...742 ...
Page 884: ...878 ...
Page 932: ...926 ...
Page 933: ...927 ...