ERL L-PRO 4000, User Manual

Page: 180 / 406

7 Acceptance/Protection Function Test Guide
7-34 L-PRO 4000 User Manual D02706R02.30
At 31 to 29 V (expect 30 V):
27 Aux U/V = High
27 Main U/V = High
Contact 14 closed
End of 27 test.
59 Overvoltage
Test
Settings
• Main: AND (3-Phase Overvoltage)
• Auxiliary: OR (Single-Phase Overvoltage – 1 phase connected)
• Main and Aux Pickup: 72 V
• Time Delay: 0.05 second
Figure 7.24: Overvoltage Logic (59)
59 Test Procedure
1. In Relay Control Panel access relay Metering>Protection.
Monitor:
59 Main O/V
59 Aux O/V
Monitor contacts:
Output 13 (59 Aux Trip)
Output 14 (59 Main Trip)
2. Apply balanced 3-phase nominal voltages (66.4 V) to the relay terminals.
Ph A: 324 & 330, 66.4 V

0

Ph B: 331, 66.4 V

-120

Ph C: 332, 66.4 V

+120

Ph N: 327 and 333
Observe:
59 Main O/V = Low
59 Aux O/V = Low
59
Aux Undervoltage
1 Phase Connected
T
0
T
0
296
297
298
299
59 Va aux RMS
59 Vb aux RMS
59 Vc aux RMS
59 Vb main RMS
59 Vc main RMS
59
Main Undervoltage
3 Phases Connected
Out 14
Out 13
59 Va main MS