2 Safety
SMA Solar Technology AG
Operating manualSTPxx-US-50-BE-en-1114
WARNING
Danger to life due to electric shock from destruction of the measuring device
due to overvoltage
Overvoltage can damage a measuring device and result in voltage being present in the
enclosure of the measuring device. Touching the live enclosure of the measuring device results in
death or lethal injuries due to electric shock.
• Only use measuring devices with a DC input voltage range of 1000 V or higher.
CAUTION
Risk of fire
• To reduce the risk of fire, connect only to a circuit provided with maximum branch-circuit
overcurrent protection 60A in accordance with the NationalElectricalCode
®
ANSI/NFPA
70 or the Canadian Electrical Code
®
CSA C22.1.
CAUTION
Risk of burns due to hot enclosure parts
The enclosure and the enclosure lid may get hot during operation. The DC load-break switch can
not become hot.
• Do not touch hot surfaces.
• Wait until the inverter has cooled down before touching the enclosure or enclosure lid.
CAUTION
Risk of injury due to weight of product
Injuries may result if the product is lifted incorrectly or dropped while being transported or
mounted.
• Transport and lift the product carefully. Take the weight of the product into account.
• Use the carrying handles or hoist when transporting the product. To attach the hoist system,
eye bolts must be screwed into the threads provided, which are located on the right and left
of the product's mounting lugs.
• Wear suitable personal protective equipment for all work on the product.
NOTICE
Damage to the enclosure seal in subfreezing conditions
If you open the product when temperatures are below freezing, the enclosure seals can be
damaged. Moisture can penetrate the product and damage it.
• Only open the product if the ambient temperature is not below -5°C.
• If a layer of ice has formed on the enclosure seal when temperatures are below freezing,
remove it prior to opening the product (e.g. by melting the ice with warm air).
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