Compliance West CDT-240, Factory Calibration Procedure

Page: 6 / 13

Compliance Products USA, Inc
CAL-Fac-001-MP-CDT 240 Rev 2.3
Page 6 of 13
Figure 6. Internal Voltage Measurement Test Points TP6, TP7 y TP8.
5.1.6. Record the result on section 4 (L-G) of CAL-Log-001-CDT 240.
5.1.6.1. EUT Test Voltage: DMM2 Line to Ground voltage readout.
5.1.6.2. Expected Value:
_ _
_
39
EUT Test Voltage
Expected value
= −
5.1.6.3. Tolerance: Expected Value +/-1 % of reading.
5.2. Neutral to Ground (P2)
5.2.1. Connect the 60V
DC
power supply to “N” and “G”, confirm the voltage with DMM2.
5.2.2. Using DMM1, Adjust P2 so that the voltage at TP7 to AGND “TP6” is -1/39 of the Power supply
voltage (-1.5385V
DC
if the voltage is 60V
DC
for example). You can see both TP7 & TP6 test points
on Figure 6.
5.2.3. Record the Neutral to Ground voltage on section 3 (N-G) of CAL-Log-001-CDT 240.
5.2.3.1. EUT Test Voltage: DMM2 Neutral to Ground voltage readout.
5.2.3.2. Expected Value:
_ _
_
39
EUT Test Voltage
Expected value
= −
5.2.3.3. Tolerance: Expected Value +/-1 % of reading.
5.3. Line to Neutral (no adjustment - verification only)
5.3.1. Disconnect the DC power supply and plug back the EUT power cord.
5.3.2. Edit the test parameters for a Voltage test:
•
Trigger on NEG
•
Voltage Test
•
Voltage setting: 50.0 V
•
Line to Neutral measurement
5.3.3. Press the test button once to ARM the CDT. You should see clean AC on the oscilloscope as it
shows it in
Figure 5 .
5.3.4. Circle Pass on 3 of CAL-Log-001-CDT 240 if verification was successful.