Emerson-liebert nxa 40kva ups user manual






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The UPS may also be paralleled for additional capacity or for redundant operation. System Overload The UPS parallel system is confirmed to overload when the total load arises above 105% nominal rating for the set basic number of UPSs. Disconnect unnecessary load and ensure the safety.
Load Sharing Fault UPS working within a parallel system are not sharing load current correctly. The UPS may also be paralleled for additional data center infrastructure capacity or for redundant operation.
The option to print the manual has also been provided, and you can use it by clicking the link above - Print the manual. RCCBs must be selected sensitive to DC unidirectional pulses Class A and insensitive to transient current pulses. This connection is to be performed And by Liebert Global Services at startup. Using the online preview, you can quickly view the contents and go to the page where you will find the solution to your problem with Emerson Liebert NX 10-30kVA. Summary of the content on the page No. Summary of the glad on the page No. Scalable UPS protection for growing data centers Offers models with capacity growth without increasing footprint Allows parallel configurations for capacity or redundancy Operates with up emerson-liebert nxa 40kva ups user manual 97% energy efficiency. Busbars to connect external batteries are accessible from the front of the UPS. This equipment is glad with RFI suppression filters. 
Khoa học - Ground leakage current exceeds 3. Confirm that the alarm is true by checking the system load percent indicated on the LCD panel to determine which phase is being overloaded.
UPS Status Messages 99 Inverter Contactor Fail The Inverter contactor has failed. This alarm is triggered when the feedback signal and the state of the contactor is not identical for a specified time. Contact Liebert Global Services at 800-543-2378 for assistance. Output Fuse Fail At least one of the output fuses is open. Contact Liebert Global Services at 800-543-2378 for assistance. Control Power 2 Fail Control Power 2 is abnormal or lost. Contact Liebert Global Services at 800-543-2378 for assistance. Unit Overload The UPS is confirmed to be overload when the load arises above 105% nominal rating. The alarm automatically resets once the overload condition is removed. Confirm that the alarm is true by checking the load percent indicated on the LCD panel to determine which phase is being overloaded. If the alarm is true, measure the actual output current to verify that the indications are valid. Disconnect unnecessary load and ensure the safety. In a parallel system, a severe load sharing error can also leads to the alarm. Contact Liebert Global Services at 800-543-2378 for assistance. System Overload The UPS parallel system is confirmed to overload when the total load arises above 105% nominal rating for the set basic number of UPSs. The alarm automatically resets once the overload condition is removed. Confirm that the alarm is true by checking the system load percent indicated on the LCD panel to determine which phase is being overloaded. If the alarm is true, measure the actual output current to verify that the indications are valid. Disconnect unnecessary load and ensure the safety. In a parallel system, a severe load sharing error can also leads to the alarm. Unit Overload Timeout The UPS is confirmed to overload and the overload times out. Note 1: the highest loaded phase will indicate overload timing-out first. Note 3: When the timer has expired, the inverter Static Switch is opened and the load transferred to bypass. The inverter shutdown and will restart after 10 seconds. Note 4: If the load decreases lower than 95% after 5 minutes, the system will transfer back to inverter mode. Confirm that the alarm is genuine by checking the load percent indicated on the LCD. If an overload is indicated then check the load, and investigate any additional load connected prior to the alarm if applicable. Inverter Overcurrent The current of inverter IGBT is over limit. If the fault will not reset, contact Liebert Global Services at 800-543-2378 for assistance. Bypass Phase Reversed The phase sequence direction of bypass voltage is reversed. Normally, the phase of phase B lags 120 degrees behind phase A, and the phase of phase C lags 120 degrees behind phase B. Verify that the phase rotation of the bypass supply presented to the UPS is correct, and rectify it if it is found to be in error. Contact Liebert Global Services at 800-543-2378 for assistance. Load Impact Transfer A transfer to bypass occurred due to a large step load. The UPS should recover automatically. Turn on connected equipment in sequential order to reduce the step loading of the inverter. Transfer Timeout The load is on bypass power due to excessive number of transfers that occurred within the last hour. The UPS will recover automatically and will transfer the load back to inverter power within an hour. Load Sharing Fault UPS working within a parallel system are not sharing load current correctly. Contact Liebert Global Services at 800-543-2378 for assistance. DC Bus Abnormal Shut off inverter due to abnormal DC bus voltage. Contact Liebert Global Services at 800-543-2378 for assistance. System Transfer The whole paralleled UPS system transferred to bypass at the same time. This message will appear on the UPS which passive transfer to bypass. Parallel Board Fault Parallel board is not working correctly. Contact Liebert Global Services at 800-543-2378 for assistance.