Cirris CH2 - Energization Box Performance Verification; EBox Performance Verification Overview; Required Items and Resistor Selection for Verification

Energization Box 57
Energization Box Performance Verification
The Energization Box (EBox) Performance Verification test will verify that the EBox is
supplying the correct voltage and that the over current circuit is working correctly. You will test
the EBox at one-half its power rating and again at twice its power rating using power resistors.
Items needed for the Performance Verification Test
Selecting Power Resistors
The EBox power test uses specific load resistors. The correct value (Ohms) and power rating
(Watts) of the resistors depends on the maximum voltage supplied by your EBox power
supply. Use the table below to select the appropriate resistors. Make sure your selected
resistor’s power rating is at least as high as the value specified in the table. You will be
instructed to connect these resistors to the EBox during the test. Cirris recommends using
power resistors from the TMC series by Huntington Electric Inc. from digikey.com.
Power Resistor Selection Table
2 * V Ohm Power Resistor
V / 2 Ohm Power Resistor
EBox Power
Supply
Max Voltage
Ohms
Watts
Ohms
Watts
5
10
2.5
2.5
10
12
24
6
6
24
24
48
12
12
48
28
56
14
14
56
48
96
24
24
96
Variable
(set power
supply to 5V)
10
2.5
2.5
10
 A Voltmeter
(you supply)
 2 Power Resistors
(you supply; see “Selecting
Power Resistors” below)
 A Mating Connector
(purchase from Cirris)