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4 ACCEPTANCE/PERIODIC TESTS
RATED DC POWER
The ALPS includes 8 configurable inputs and 18 configurable outputs for Single Phase Tripping models and 12 config-
urable inputs and 24 configurable outputs for Three Phase Tripping models. These provide great flexibility in applying and
testing the relay. The configurable inputs are programmed to determine their use. For example, one input could trigger
oscillography, while another could select a settings group.
The configurable outputs are set in a similar manner. Each output can be set as one of the 217 different flags available in
the relay of the relay. In the test case below, the digital inputs are used to control the settings group, disable protection and
send inputs to outputs. The configurable output contacts will echo inputs, monitor internal units and respond to user
actions.
The steps of test T3 are as follows. Some tests will test inputs as well as outputs at the same time. Some will be tested sep-
arately.
GE Power Management
X
CONTINUITY
TESTER
Y
A1
+
SUPPLY
48, 125, 250 V DC
-
A17
A2
A18
Figure 4–1: DIGITAL OUTPUTS TEST CONNECTIONS
ALPS Advanced Line Protection System
4.2 GENERAL RELAY TESTS
DIGITAL OUTPUTS
(see Table 4-2)
UNIT UNDER TEST
CASE GROUND
SURGE GROUND
4.2.4 T3 – CONFIGURABLE INPUT AND OUTPUT TEST
4
4-9
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