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4.2 GENERAL RELAY TESTS
This test checks all outputs of the relay. It is a convenient way to determine proper system connections and verify the oper-
ation of all relay contacts, without having to apply currents and voltages to simulate faults. Protection can be enabled or dis-
abled, as deemed necessary.
If this test is run remotely through ALPS-Link, then switch RM BRKR must be in the down position to allow
the outputs to operate. Refer to Section 8.4.1: HARDWARE SWITCHES on page 8–24 for details on chang-
NOTE
ing the switch position. Note that the relay is shipped from the factory with the switch in the down position
allowing the outputs to operate.
1.
Connect the relay as shown in Figure 4–1: DIGITAL OUTPUTS TEST CONNECTIONS on page 4–9.
2.
Press the [ACT] key and enter the control level password.
3.
Use the arrow key to select 8. Digital Output Test
4.
Press the [ENT] key. Before a contact is allowed to be tested, the display prompts DISABLE PROTECT?
5.
Press the [1/Y] key followed by the [ENT] key to turn protection off. Protection remains off until the test mode is ended
(if desired, protection can be left enabled during the test).
6.
Select the output to test by using the arrow keys to scroll to the desired output, such as T1, and press the [ENT] key.
4
When the digital output is chosen, the selected relay output closes. Verify that the output under test has closed, using
an ohmmeter or other suitable device.
7.
After the output is tested, scroll to the next output to test, then press the [ENT] key. This output closes and the previ-
ously selected output opens. Continue in this fashion until all outputs are tested.
8.
End the test mode by scrolling to the END TEST MODE selection, then press the [ENT] key. Alternatively, press [END]
followed by the [ENT] key to end the test and re-enable protection.
Table 4–2: DIGITAL OUTPUTS TEST CONNECTIONS
OUPTUT
X
T1
A3
T2
A4
T3
A5
T4
A6
†
A7
T5
A8
†
T6
A1
A9
A2
A10
A3
A11
A4
A12
A5
A13
A6
A14
A7
A15
A8
A16
B1
†
A9
†
B2
A10
B3
†
A11
Tx - TRIPPING contacts (programmable)
Ax - Alarm contacts (programmable)
KTx - Key Transmitter contacts (programmable)
Cxy - C Form contacts with one NO/NC contact pair (programmable)
CA - Critical Alarm
PWR - Power Supply Alarm
†
These digital outputs apply to the Single Phase Tripping model only.
4-8
Y
OUTPUT
A19
†
A12
A20
KT1 (no)
A21
KT1 (nc)
A22
KT2 (no)
A23
KT2 (nc)
A24
KT3 (no)
A25
KT3 (nc)
A26
KT4 (no)
A27
KT4 (nc)
A28
C1A (no)
A29
C1B (nc)
A30
C2A (no)
A31
C2B (nc)
A32
CA (nc)
B17
CA (no)
B18
PWR (nc)
B19
PWR (no)
ALPS Advanced Line Protection System
4 ACCEPTANCE/PERIODIC TESTS
4.2.3 T2 – DIGITAL OUTPUT TEST
X
Y
B4
B20
B5
B21
B5
B22
B5
B21
B23
B7
B8
B24
B8
B25
B26
B9
B26
B10
B11
B27
B11
B28
B29
B12
B29
B13
B14
B30
B14
B31
B32
B15
B32
B16
GE Power Management
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