9-6
MIWII Directional Power Protection System
GEK-113308
9.5 POWER SUPPLY TEST
9 RELAY COMMISSIONING
9
9.5POWER SUPPLY TEST
Connect the relay to a power supply at rated voltage .
Enable the following elements: 32_1,32_2,32_3 setting their pickups and times to the minimum possible value.
Inject to the relay the corresponding currents and voltages, so that the power elements trip.
Under these 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:
Shown values are only illustrative, as due to the nature of the internal power supply (switched power supply), the
consumption currents are high frequency currents, and the meters used measure these values with a poor accuracy.
Model “LO” (24 - 48 Vdc)
Voltage (Vdc)
Maximum Consumption (mA)
18
900
48
300
58
250
Model “HI” (110 - 250 Vdc 120-230 Vac)
Voltage (Vdc)
Maximum Consumption (mA)
88
130
110
105
250
55
Voltage (Vac)
Maximum Consumption (mA)
110
200
220
140
