Checking The Function Of The Ups - SMA SUNNY CENTRAL 500CP XT Maintenance Manual

6 Maintenance
6.4.1.5

Checking the Function of the UPS

Figure 14: Positon of the UPS
Position
A
Danger to life due to electric shock or electric arc if live components are touched
• Switch off the inverter and wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Disconnect the inverter (see Section 4, page 26).
Procedure:
1. Switch the inverter to Stop.
2. Connect the supply voltage (see Section 4.3.1, page 28).
3. Measure the voltage at the supply voltage output between L1 and N.
☑ The voltage is approximately 230 V.
✖ Voltage deviates significantly?
• Contact Service.
4. Measure the voltage at the supply voltage output of the UPS at -X400 terminal 5 and -X402 terminal 5.
☑ The voltage is approximately 24 V.
✖ Voltage deviates significantly?
• Contact Service.
50 SCCPXT-E7-WA-en-37
Designation
Uninterruptible power supply (UPS)
DANGER
SMA Solar Technology AG
Maintenance Manual