Danger to life due to electric shock when live components or DC conductors are touched

When exposed to light, the PV modules generate high DC voltage which is present in the DC conductors. Touching live DC conductors results in death or lethal injuries due to electric shock.

1. Disconnect the product from voltage sources and make sure it cannot be reconnected before working on the device.
2. Do not touch non-insulated parts or cables.
3. Wear suitable personal protective equipment for all work on the product.

Danger to life due to electric shock when touching live system components in case of a ground fault

If a ground fault occurs, parts of the system may still be live. Touching live parts and cables results in death or lethal injuries due to electric shock.

1. Disconnect the product from voltage sources and make sure it cannot be reconnected before working on the device.
2. Only touch the cables of the PV modules on their insulation.
3. Do not touch any parts of the substructure or frame of the PV array.
4. Do not connect PV strings with ground faults to the inverter.
5. Ensure that no voltage is present and wait five minutes before touching any parts of the PV system or the product.

Danger to life due to fire or explosion

In rare cases, an explosive gas mixture can be generated inside the product under fault conditions. In this state, switching operations can cause a fire inside the product or explosion. Death or lethal injuries due to hot or flying debris can result.

1. In the event of a fault, do not perform any direct actions on the product.
2. Ensure that unauthorized persons have no access to the product.
3. Disconnect the AC circuit breaker, or keep it disconnected in case it has already tripped, and secure it against reconnection.
4. Only perform work on the product (e.g., troubleshooting, repair work) when wearing personal protective equipment for handling of hazardous substances (e.g., safety gloves, eye and face protection, respiratory protection).

Risk of injury due to toxic substances, gases and dusts.

In rare cases, damages to electronic components can result in the formation of toxic substances, gases or dusts inside the product. Touching toxic substances and inhaling toxic gases and dusts can cause skin irritation, burns or poisoning, trouble breathing and nausea.

1. Only perform work on the product (e.g., troubleshooting, repair work) when wearing personal protective equipment for handling of hazardous substances (e.g., safety gloves, eye and face protection, respiratory protection).
2. Ensure that unauthorized persons have no access to the product.

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.

1. Only use measuring devices with a DC input voltage range of 1000 V or higher.

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.

1. Do not touch hot surfaces.
2. Wait until the inverter has cooled down before touching the enclosure or enclosure lid.

Risk of burns from hot surfaces

The surface of the inverter can get very hot. Touching the surface can result in burns.

1. Mount the inverter in such a way that it cannot be touched inadvertently.
2. Do not touch hot surfaces.
3. Wait 30 minutes for the surface to cool sufficiently.
4. Observe the safety messages on the inverter.

Risk of fire

1. To reduce the risk of fire, connect only to a circuit provided with maximum branch-circuit overcurrent protection 50 A in accordance with the National Electrical Code^® ANSI/NFPA 70 or the Canadian Electrical Code^® CSA C22.1.

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.

1. Only open the product if the ambient temperature is not below -5°C (23°F).
2. 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).

Damage to the product due to sand, dust and moisture ingress

Sand, dust and moisture penetration can damage the product and impair its functionality.

1. Only open the product if the humidity is within the thresholds and the environment is free of sand and dust.
2. Do not open the product during a dust storm or precipitation.
3. Close tightly all enclosure openings.
4. Only use listed rain-tight or liquid-tight conduit fittings to attach the conduits to the product.

Damage to the inverter due to electrostatic discharge

Touching electronic components can cause damage to or destroy the inverter through electrostatic discharge.

1. Ground yourself before touching any component.

Ground faults, unreliable and highly resistive connections due to Wire Nuts^®

Potential damage to or failure of the inverter.

1. Do not use Wire Nuts^®.

Damage to the product due to cleaning agents

The use of cleaning agents may cause damage to the product and its components.

1. Clean the product and all its components only with a cloth moistened with clear water.