Micom P634 - Testing

Now blocking can be cleared as follows (Par/Func/Glob menu branch):
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MAIN: Device on-line = Yes (= on)
10.2.2 Testing
When testing trip or close commands configured to standard outputs, the CB must
not be mechanically locked, so that its auxiliary 52a/b contact could operate and
break the DC current. If the CB has to stay locked, tripping or closing circuit has to
be opened by terminal disconnection or test switch. Otherwise there is a high risk
of damaging the P634 output contact.
By using the signals and displays generated by the P634, it is possible to
determine whether the P634 is correctly set and properly interconnected with the
station. Signals are signaled by output relays and LED indicators and entered into
the event memory. In addition, the signals can be checked by selecting the
appropriate signal in the menu tree.
If the user does not wish the circuit breaker to operate during protection testing,
the trip commands can be blocked through MAIN: Trip cmd.block. USER
(Par/Func/Glob menu branch) or an appropriately configured binary signal input.
If circuit breaker testing is desired, it is possible to issue a trip command for
100 ms through MAIN: Man. trip cmd. USER (Oper/CtrlTest menu branch) or
an appropriately configured binary signal input. Selection of the trip command
from the integrated local control panel is password-protected (see
Section 6.11.8, (p. 6-29)).
The manual trip command is not executed unless the manual trip is included in the
selection of possible functions to effect a trip (in the configuration of trip
commands).
If the P634 is connected at substation control level, the user is advised to
activate the test mode via MAIN: Test mode USER (Par/Func/Glob menu
branch) or an appropriately configured binary signal input. The telegrams are
then identified accordingly (reason for transmission: test mode).
10.2.3 Checking the Binary Signal Inputs
By selecting the corresponding state signal (Oper/Cycl/Phys menu branch), it is
possible to determine whether the input signal that is present is recognized
correctly by the device. The values displayed have the following meanings:
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"Low": Not energized.
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"High": Energized.
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Without function: No functions are assigned to the binary signal input.
This display appears regardless of the binary signal input mode selected.
10.2.4 Checking the Output Relays
It is possible to trigger the output relays for a settable time period for test
purposes (time setting at OUTP: Hold-time for test in Oper/CtrlTest menu
branch). First select the output relay to be tested (OUTP: Relay assign.
f.test, Oper/CtrlTest menu branch).
Test triggering then occurs via OUTP: Relay test (Oper/CtrlTest menu branch).
It is password-protected (see Section 6.11.8, (p. 6-29)).
P634
10 Commissioning
10-6 P634/EN M/R-42-A // P634‑311‑653