Advertisement
2.6.2.6
Supervision of device control
GRD150 check the device status of 2 status input (CB, DS, IND) or 3 status input (EDS) on
MIMIC diagram. GRD150 make the signal (i.e. CB_PLT_FAIL, CB_UNDEF) after the device
status is invalid more than setting time.
GRD150 check the response time from control output to change device status. GRD150 make the
signal (i.e. CB_NORESP) after the device status unchanged more than setting time.
2.6.2.7
Setting
The setting ranges to perform above control functions are as follows:
Element
CBPM
DS1PM – DS5PM
EDS1PM, EDS2PM
CBOPP
CBCLP
DS1OPP – DS5OPP
DS1CLP – DS5CLP
EDS1OPP, EDS2OPP
EDS1CLP, EDS2CLP
EDS1EAP, EDS2EAP
EDS1FRP, EDS2FRP
COS1PM – COS4PM
CBRSPT
DS1RSPT – DS5RSPT
EDS1RSPT, EDS2RSPT
CBPLT
DS1PLT- DS5PLT
EDS1PLT, EDS2PLT
IND1PLT – IND8PLT
[OPLOCK]
2.6.3
Synchronism and Voltage Check
When a circuit breaker is closed, the GRD150 executes a synchronism and voltage check using the
voltages on both ends of the circuit breaker. The circuit breaker is closed when either of the checks
is satisfactory.
Synchronism Check
Synchronism check is performed when voltages are live on both ends of the circuit breaker and
closing of the breaker is permitted when the following conditions are fulfilled.
- Running voltage (VR) and incoming voltage (VI) are higher than the set value Vov.
- The differences in amplitude and phase angle of VR and VI are smaller than the set value ΔV
and Δθ respectively.
- The difference in frequency of VR and VI is smaller than the set value Δf.
The condition for synchronism check such as CB, DS condition is programmed by PLC function.
Range
Step
Fix / Var
Fix / Var
Fix / Var
0.1 – 100.0 s
0.1 s
0.1 – 100.0 s
0.1 s
0.1 – 100.0 s
0.1 s
0.1 – 100.0 s
0.1 s
0.1 – 100.0 s
0.1 s
0.1 – 100.0 s
0.1 s
0.1 – 100.0 s
0.1 s
0.1 – 100.0 s
0.1 s
Latch / Pulse
0.1 – 100.0 s
0.1 s
0.1 – 100.0 s
0.1 s
0.1 – 100.0 s
0.1 s
0.1 – 100.0 s
0.1 s
0.1 – 100.0 s
0.1 s
0.1 – 100.0 s
0.1 s
0.1 – 100.0 s
0.1 s
Unlock / Lock
⎯
⎯
112
Default
Remarks
Fix
CB pulse mode
Fix
DS1 – DS5 pulse mode
Fix
EDS1,EDS2 pulse mode
5.0 s
CB open pulse width
5.0 s
CB close pulse width
5.0 s
DS1 – DS5 open pulse width
5.0 s
DS1 – DS5 close pulse width
5.0 s
EDS1, EDS2 open pulse width
5.0 s
EDS1, EDS2 close pulse width
5.0 s
EDS1, EDS2 earth pulse width
5.0 s
EDS1, EDS2 free pulse width
Latch
COS1 – COS4 pulse mode
20.0 s
CB response check timer
20.0 s
DS1 – DS5 response check timer
20.0 s
EDS1, EDS2 response check timer
20.0 s
CB palette check timer
20.0 s
DS1 – DS5 palette check timer
20.0 s
EDS1, EDS2 palette check timer
20.0 s
IND1- IND8 palette check timer
Unlock
Operation lock
6 F 2 S 0 8 4 2
Advertisement
