Danger to life due to electric shock or electric arc if live components are touched
If the MV Power Station and its devices are not correctly disconnected, dangerous voltages may be present in the
components which, if touched, will result in death or serious injury.
• Disconnect the MV Power Station (see Section 7.6, page 101).
• After switching off the inverter, wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Ensure that the MV Power Station and its devices are voltage-free.
Procedure:
1. Switch the inverter to
Stop
(see Section 7.4.1, page 100).
2. Connect the supply voltage (see Section 7.9.1, page 103).
3. Measure the voltage at the supply voltage output between L1 and N.
☑ The voltage is approximately 230 V.
✖ Voltage deviates significantly?
• Contact Service partner.
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 partner.
5. Disconnect the supply voltage (see Section 7.4.4, page 100).
6. Measure the time until the communication unit switches off.
☑ The communication unit switches off after 15 seconds at the earliest.
✖ The communication unit switches off earlier?
• Contact Service partner.
10.5.11 Checking the AC Disconnection Unit
The inverter is optionally equipped with an AC disconnection unit. If a circuit breaker manufactured by ABB is installed,
it needs to be checked. If a circuit breaker by LS Industrial Systems is installed, no checking is necessary.
10 Maintenance
SMA Solar Technology AG
System Manual
MVPS22JP-SH-en-11
154
Summary of Contents for 1000-1SC
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