Basler Electric BE1-51/27C - Manual (Page 47)

9137200998 Rev E 41
Tests and Adjustments
Procedures in this section are for use in testing and adjusting a relay for the desired operation in a
protective scheme. If a relay fails an operational test, or if an adjustment discloses a faulty relay, contact
Basler Electric.
Required Test Equipment
Minimum test equipment required for relay testing and adjustment is listed below. Refer to the following
figures for test setups.
•
Appropriate ac or dc power source for relay operation
•
Appropriate ac source (50- or 60-hertz as appropriate) for voltage and current testing
•
Dc external power source for output relay(s) test setup and timer input
•
Relay test set capable of delivering 40 amperes. A higher capability is needed for instantaneous
settings above 40 amperes
•
Timer
•
One shunt resistor for providing minimum target load
Operational Test
Preliminary Instructions
Perform the following steps before going on to any testing.
Step 1. Connect the relay test setup in accordance with Figures 30 through 35, depending upon the
sensing input type for your relay (see the style chart in the General Information chapter).
(a) Sensing Input Type L (Single-Phase Sensing). Refer to Figure 30.
Note
For relays having the above sensing, only the from panel LOW range
current sense terminal(s) should be connected for a complete check of
the relay.
Ensure that timed output terminals 1 and 10 are connected.
(b) Sensing Input Type P (Three-Phase Sensing). Refer to Figure 31.
Note
For relays having the above sensing, only the from panel LOW range
current sense terminal(s) should be connected for a complete check of
the relay.
For all three-phase relays, the test signals must connect to both the
current and voltage terminals for the same phase.
Ensure that timed output terminals 1 and 10 are connected.
BE1-51/27C Tests and Adjustments