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9.5
TARGET LEDS
• Check that pressing the Enter key, all the faceplate target LEDs light up and reset if the key is kept pressed for
more than 3 seconds.
9.6
POWER SUPPLY TEST
• Connect the relay to a power supply at rated minimum voltage. Enable the following functions: 51P, 51N, 50PH,
50PL and 49, setting their pickups and times to the minimum value possible. Inject to the relay on phase A and B
a current equal to 2 x In (phase), making the relay to trip and to close all the auxiliary outputs corresponding to the
functions enabled.
• Under this tripping conditions check that the ALARM (READY) output is open, and that the relay can communicate
with the PC. Check this point requesting the relay model number from the PC.
Voltage test and maximum consumption is shown below:
Voltage
(Vdc)
18
48
58
Model "H" (110 - 250 Vdc
Voltage
(Vdc)
88
110
250
Voltage
(Vac)
110
220
The values shown are only orientative, as due to the nature of the unit power supply (commuted supply), the
consumption currents are high frequency currents, and the meters used measure these values with a poor accuracy.
9.7
COMMUNICATIONS
The test consists on checking that the 2 communications ports in the relay (the faceplate RS232 and the rear RS485)
work properly. To perform this test is it necessary to use a computer and a connector suitable to establish the
connection between the PC and the relay (refer to figure 3.10). If the faceplate port is used, a straight through cable is
needed. If the rear RS485 port is used, an RS485/RS232 converter is needed.
The communications parameters that have to be set in the computer are the relay default settings, as follows:
Relay Number:
Communications speed:
Number of Stop bits:
GEK-106273L
RELAY COMMISSIONING
Model "F" (24 - 48 Vdc)
Maximum Consumption (mA)
900
300
250
120-230 Vac)
Maximum Consumption (mA)
130
105
55
Maximum Consumption (mA)
200
140
9.600
MIF Digital Feeder Protection
1
1
9-3
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