SMA SSM8-21-BS - Manual (Page 7)

SMA Solar Technology AG 2 Safety
Installation Manual SSMxx-21-IA-BS-JP-en-20 7
2.2 Safety Information
This section contains safety information that must be observed at all times when working on or with the product. To prevent
personal injury and property damage and to ensure long-term operation of the product, read this section carefully and
observe all safety information at all times.
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Danger to life from electric shock due to live voltage
High voltages are present in the live components of the Sunny String-Monitor. Touching live components results in death
or serious injury due to electric shock.
• Wear personal protective equipment when working on the Sunny String-Monitor.
• Do not touch live components.
• Before performing any work, always disconnect the Sunny String-Monitor from voltage sources unless supply
voltage is absolutely necessary.
– Switch off the DC load-break switch in the Sunny String-Monitor.
– Remove the DC fuses in the central inverter or main DC distribution box when the power is switched off. Use the
LV/HRC fuse handle.
– Only open the fuse holders in the Sunny String-Monitor when the power is switched off.
• Ensure that the device cannot be reconnected.
• Ensure that no voltage is present.
• Ground and short-circuit the device.
• Cover or isolate any adjacent live components. Protective covers must always be mounted.
Danger to life from electric shock due to live DC cables
DC cables connected to PV modules that are exposed to sunlight are live. Touching live DC cables results in death or
serious injury due to electric shock.
• Prior to connecting the DC cables, ensure that the DC cables are voltage-free.
• Wear suitable personal protective equipment when working on the Sunny String-Monitor.
Danger to life from electric shock due to ground fault
In the event of a ground fault, grounded PV systems can still be live. Touching system components that have not been
properly grounded results in death or serious injuries from electric shock.
• Before working on the PV system, ensure that no ground fault is present.
• Wear suitable personal protective equipment for all work on the product.
Danger to life from electric shock if the Sunny String-Monitor is damaged
If the Sunny String-Monitor is damaged, dangerous situations may arise during operation that result in death or serious
injury from electric shock.
• Only use the Sunny String-Monitor when it is in a technically faultless condition and safe to operate.
• Regularly check the Sunny String-Monitor for visual damage.
• Make sure that all external safety equipment is freely accessible at all times.
• Make sure that all safety equipment is in good working order.