AMETEK CTS
NSG 3040A, 3060A series
Operating Manual
V 1.04
124 / 157
14.8. The Power Fail Verification
Program setting:
During the test the power change to PF2 for 5 seconds. During these 5 seconds the user must connect the CA
PFS to the output of the generator.
A. Preparation before the test starts:
- Make the setting as shown in the picture above
- Discharge the CA PFS box
- Do not power the PF2 input of the NSG generator at the rear side
- Connect only the N-wire to the NSG 3000A N-EUT output plug on front side
- Prepare the L wire to connect it after test start to the L-EUT output plug in a short time
B. Test procedure:
- Press start button. The white LED changes from PF1 to PF2
- The user has 5 seconds time to connect the L-wire of the CA PFS to the L-EUT output of the NSG 3000A
- After 5000 ms at the 90 deg phase angle, the generator will change the power from PF2 to PF1
- Measure and record the inrush current via PF1
Remark: If the 5 seconds are too short for connect the CA PFS to the compact NSG generator, the user can
increase the td time. Take care that the td time is a multiple of the frequency period
