Basler Electric BE1-79M - Manual (Page 55)

9170100990 Rev N BE1-79M Tests and Adjustments 5-1
SECTION 5 • TESTS AND ADJUSTMENTS
General
Procedures in this section are for use in testing and adjusting a relay for the desired operation in a protec-
tive scheme. If a relay fails an operational test, or if an adjustment discloses a faulty relay, refer to Section
6, Maintenance.
Required Test Equipment
Minimum test equipment required for relay testing and adjustment is listed below. Refer to Figure 5-1 for
the test setup.
NOTE
Commercially available frequency relay test sets with frequency and time
generating accuracies exceeding those of the relay, and including electronic
switching, may be used.
• Appropriate ac or dc power source for relay operation.
• Appropriate ac source for frequency sensing. (A source with frequency stability of 0.00002 Hz must
exhibit phase noise of less than 90 db for accurate measurement. The accuracy and stability of this
source is necessary as the relay precisely measures the period between positive going zero-
crossings of the applied waveform and responds instantaneously to the sensed condition.)
• Hardware (battery, and lamp, multimeter, etc.) or method of determining that the output contacts
close.
Operational Test
The following procedure verifies operation of the relay.
CAUTION
Performing the Operational Test Procedure with the relay in the NORMAL
Mode will increment the reclosing event memory. Prior to initiating the Opera-
tional Test Procedure, record the contents of the reclosing event memory.
Care must be taken not to exceed output contact ratings.
STEP 1. Connect the circuit as shown in Figure 5-1. K1 is a latching relay with a set of Form B aux-
iliary contacts to simulate a controlled breaker. If the Pilot Initiate option is not present, S4
and the connections to terminals 8 and 14 are not needed.
STEP 2. Press and release switch S7 (K1 reset) to assure that K1-auxiliary contacts are open (breaker
closed). Set thumbwheel switches as indicated below.
RESET (Note 1) 60.0 seconds (06 setting)
RECLOSE TIME (Note 2 and Note 3)
1 05.0 seconds (050 setting)
2 10.0 seconds (100 setting)
3 15.0 seconds (150 setting)
RECLOSE FAIL Inhibited (00 setting)
MAX. Cycle 1000.0 seconds (000 setting)
NOTES:
1. If reset timer option is D, set RESET to 60.
2. If reclose time delay option is A7, set RECLOSE TIME 2 to 010 and RECLOSE TIME 3 to
015.
3. If reclose time delay option is A8, set PILOT TIME to 99.