SERVICE MANUAL R5888C
QUADRAMHO Chapter 5
Page 3 of 24
v) Check that all the front plate information of each module relevant to that on the
‘rating card’ agree and that they are correct for the actual system.
Note: Vx(1) is given on the back of the case.
vi) Inspect each module and the case to see that no damage has occurred during
transit. Check that the serial number painted on one printed circuit board of
each module agrees with that on the hinged label at the bottom left hand side
of the front of the case.
Make sure all modules are correctly re-inserted and the interlock bars are moved
back to their left hand position.
Section 4. SECONDARY INJECTION TESTS
4.1 Settings
All settings on Quadramho are by means of switches and should now be put on
the relay. It is important that the setting chart is kept correctly marked as it is
necessary to vary the positions of some of the switches during the commissioning
tests.
As many tests as possible are done in the scheme option number selected by
switches X and Y on Module 4. The use of test option numbers will be described as
necessary.
The result sheets provided in Addendum 2 should be used.
4.2 Isolation
All the relay contacts can be prevented from operating while the rest of the relay
functions normally and gives indications, also signals for operation times could be
taken from the monitor point box. It is however necessary to check the operation of
contacts during commissioning, so alternative trip isolation must be obtained as
necessary by removing the circuit breaker trip isolation links.
The heavy current bridging plugs can now be replaced by the test plugs.
The only connections that must be made before insertion are the CT shorting links
(see Figure 1 of this section) on the red ringed terminals 1 to 2, 3 to 4, 5 to 6 and
7 to 8 of the test plug going in the 1Y position.
The notes in raised letters on the side of the test plugs should be observed.
The equipment is now effectively isolated from the system.
Sequential number for various combinations
of 3 alpha module numbers 000 to 200 for
relays with ‘Quad’ characteristic 201 to 400
for relays with lenticular Zone 3.
SHPM101 – '000'000'000 A
Meaning
Relay Case
Wiring
None A is the first issue and other letters
indicate minor case changes
Case Mounting Type
R = Rack
F = Flush
S = Semi-protection
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