Basler BE1-25/79TR, Instruction Manual, Page: 62 / 78

5-1
SECTION 5
TESTING
GENERAL
A BE1-25/79TR Test Simulator (shown in Figure 5-1) makes testing BE1-25/79TR relays much easier.
All contact sensing inputs and enable inputs are simulated by toggle switches that are easily accessible
on the front panel. Appropriate LEDs provide BE1-25/79TR relay functional indications. Additionally, the
test procedures in this section use the Test Simulator switch and LED names. A Test Simulator
schematic diagram is provided in Figures 5-2 and 5-3.
TESTING
Testing BE1-25/79TR relays requires that they be isolated from the controlled system. A bench-test
setup that would be appropriate is illustrated in Figure 5-4.
The test is divided into eight different functional areas. The functional areas are:
Time, Date, Settings, and Save.
Timers.
Control Inputs.
Voltage Monitor.
Voltage Difference Inhibit.
Sync LB and LL Inhibit.
Phase Accept.
Slip Frequency Difference.
The tests are organized so that testing may be started at any functional area. All test measurements
have a tolerance of ±5%.
Preliminary Setup Procedures
Step 1. Connect the test circuit as shown in Figure 5-4. (Connect the appropriate contact sense input
voltage to terminals 19 and 20 on the test set.)
Step 2. Close the simulated breaker by operating the test set MANUAL CLOSE switch (the test set 52a
LED should light)
Step 3. Open all input switches on the test set.
Step 4. Apply nominal power supply voltage to the power input terminals and the contact sensing input
on the test set.
The Power LED on the relay should light.