SMA SSM8-21-BS - Manual (Page 41)

SMA Solar Technology AG 8 Disconnecting the Sunny String-Monitor
Installation Manual SSMxx-21-IA-BS-JP-en-20 41
8 Disconnecting the Sunny String-Monitor
Procedure:
1. Switch off the DC load-break switch. This ensures that there is no current flow through the Sunny String-Monitor.
2. Disconnect the Sunny Central from voltage sources (see Sunny Central installation manual).
If there are fuses in the Sunny Central, remove them. Use the LV/HRC fuse handle.
or
If there are no fuses in the Sunny Central, remove the fuses in the DC main distributor.
3. Only open the fuse holders in the Sunny String-Monitor when the power is switched off.
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Danger to life due to electric shock if live components of the Sunny String-Monitor are touched
• Observe the following safety rules when disconnecting:
– Disconnect the device from voltage sources.
– Ensure that the device cannot be reconnected.
– Ensure that no voltage or current is present.
– Ground and short-circuit the device.
– Cover or isolate any adjacent live components.
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Risk of burns from touching hot components
• Wear personal safety equipment when working on the device.
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Danger to life from electric shock if the DC load-break switch is damaged
Switching the DC load-break switch at temperatures below ‒25°C may cause damage to the DC load-break switch.
Correct disconnection function can no longer be guaranteed. High voltages are present in components that are not
properly disconnected. Touching live components can result in death or serious injury due to electric shock.
• Do not switch the DC load-break switch at temperatures below ‒25°C.
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Danger to life from electric shock due to damaged fuse holders
Using the fuse holders at temperatures below ‒25°C may cause damage to the fuse holders. Correct disconnection
function can no longer be guaranteed. High voltages are present in components that are not properly disconnected.
Touching live components can result in death or serious injury due to electric shock.
• Do not use the fuse holders at temperatures below ‒25°C.