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Compliance Products USA, Inc 
CAL-Fac-001-MP-CDT 240 Rev 2.3   

 

Page 8 of 13 

 
 

6.2.2.

 

Edit the test parameters for a Voltage test: 

 

Trigger on NEG 

 

Voltage Test 

 

Voltage setting: 50.0V  

 

Neutral to Ground measurement 

 

6.2.3.

 

Press TEST once to ARM the CDT.   

 

6.2.4.

 

Record both input voltage and N-G BNC voltage on section 4 of CAL-Log-001-CDT 240. 

6.2.4.1.

 

EUT Test Voltage: DMM2 Neutral to Ground voltage readout. 

6.2.4.2.

 

Expected Value:  

_

_

_

100

EUT Test Voltage

Expected

value

=

 

 

6.2.4.3.

 

Tolerance: Expected Value +/-1 % of reading. 

 
 

6.3.

 

Line to Neutral - No adjustment, verification only. 

 

6.3.1.

 

If the EUT connection is reverse, connect as normal 

Figure 7

. 

 

6.3.2.

 

Edit the test parameters for a Voltage test: 

 

Trigger on NEG 

 

Voltage Test 

 

Voltage setting: 50.0 V  

 

Line to Neutral measurement 

 

6.3.3.

 

Press TEST once to ARM the CDT.   

 

6.3.4.

 

Record both input voltage and L-N BNC voltage on section 4 of CAL-Log-001-CDT 240. 

6.3.4.1.

 

EUT Test Voltage: DMM2 Line to Neutral voltage readout. 

6.3.4.2.

 

Expected Value:  

_

_

_

100

EUT Test Voltage

Expected

value

=

 

 

6.3.4.3.

 

Tolerance: Expected Value +/-1 % of reading. 

 
 

Содержание CDT-240

Страница 1: ...IALS EQUIPMENT NEEDED 5 1 Calibrated DMM Qty 2 DMM1 for voltage RMS below 50V and the DMM2 for voltages RMS 50V or greater 5 2 Calibrated Oscilloscope with 10x or 100x probe 5 3 DC power supply 60V 5...

Страница 2: ...document instead of mentioned CAL Log 2 2 Plug in the CDT 240 power cord plug in the EUT power cord to the proper value 90 260V 50 60Hz disconnect all the test leads attached to G L or N outputs disco...

Страница 3: ...so that the CDT is not armed The oscilloscope should measure 0V on the BNC connector we expect to get same as Figure 2 adjust P3 in order to set this value Figure 2 Zero output on BNC connector with C...

Страница 4: ...be 0 0V because the voltage decayed to zero in 3s Adjust P4 as needed so that the measured voltage is 0 0V turning the potentiometer clockwise makes the reading lower i e more negative Repeat the tes...

Страница 5: ...50 0 V Line to Gnd measurement 5 1 3 Press the test button once to ARM the CDT You should see a sine wave signal on the oscilloscope as it shows it in Figure 5 Figure 5 Sine Wave Output on CDT 240 BNC...

Страница 6: ...f the voltage is 60VDC 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 Neu...

Страница 7: ...EUT voltage is 120V for example To read both meters simultaneously press the HOLD button on both meters at the same time if available 6 1 5 Record both input voltage and L G BNC voltage on section 4 o...

Страница 8: ...EUT Test Voltage Expected value 6 2 4 3 Tolerance Expected Value 1 of reading 6 3 Line to Neutral No adjustment verification only 6 3 1 If the EUT connection is reverse connect as normal Figure 7 6 3...

Страница 9: ...84 ms for 60 Hz 1 01 ms for 50 Hz 7 2 All measurements are positive peak disconnect POS unless otherwise specified An example of a very accurate disconnect is shown below in Figure 8 Figure 8 Example...

Страница 10: ...tion was successful 7 4 5 1 Expected Value Value of previous Positive Sine Wave Peak 7 4 5 2 Tolerance Expected Value 5 0 of reading 7 5 Accuracy at 120V 60Hz input NEG peak 7 5 1 Connect a scope to t...

Страница 11: ...he test time result on the CDT 240 8 2 Neutral to Ground Voltage Accuracy 8 2 1 Edit the test parameters for a Voltage test Trigger on NEG Voltage Test Voltage setting 50 0 V Neutral to Ground measure...

Страница 12: ...uracy 9 2 1 Edit the test parameters for a Delay test Trigger on POS Delay Test Delay setting 1 second Line to Neutral measurement 9 2 2 Connect L N to 1s time constant terminals A and B of CAL BOX an...

Страница 13: ...onfirm the oscilloscope voltage waveform after 1 second of Main relay disconnection measurement corresponds to the CDT 240 within 2 of reading 0 8V 9 3 7 Record on section 7 of CAL Log 001 CDT 240 9 3...

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