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

The DC cables connected to a battery or a PV module may be live. Touching live DC cables results in death or serious injury due to electric shock.

1. Disconnect the product and battery from voltage sources and make sure it cannot be reconnected before working on the device.
2. Wait five minutes before working on the inverter.
3. Observe all safety information of the battery manufacturer.
4. Do not touch non-insulated parts or cables.
5. Do not pull the DC conductors under load out of the terminal blocks.
6. Wear suitable personal protective equipment for all work on the product.

Danger to life due to electric shock from touching an ungrounded PV module or array frame

Touching ungrounded PV modules or array frames results in death or lethal injuries due to electric shock.

1. Connect and ground the frame of the PV modules, the array frame and the electrically conductive surfaces so that there is continuous conduction. Observe the applicable local regulations.

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 and battery 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 5 minutes before touching any parts of the PV system or the product.

Danger to life due to electric shock in case of overvoltages and if surge protection is missing

Overvoltages (e.g., in the event of a flash of lightning) can be further conducted into the building and to other connected devices in the same network via the network cables or other data cables if there is no surge protection. Touching live parts and cables results in death or lethal injuries due to electric shock.

1. Ensure that all devices in the same network and the battery are integrated into the existing surge protection.
2. When laying the network cables or other data cables outdoors, it must be ensured that a suitable surge protection device is provided at the transition point of the cable from the product or the battery outdoors to the inside of a building.
3. The Ethernet interface of the product is classified as "TNV-1" and offers protection against overvoltages of up to 1.5 kV.

Danger to life due to fire and deflagration

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 and, in very rare cases, a deflagration inside the product. Death or lethal injuries due to the spread of a fire can result.

1. In the event of a fault, do not perform any direct actions on the product.
2. In the event of a fault, ensure that unauthorized persons have no access to the product.
3. In the event of a fault, disconnect the PV module from the inverter via an external disconnection device. If there is no disconnecting device present, wait until no more DC power is applied to the inverter.
4. In the event of a fault, disconnect the battery from the product via an external disconnection service. Do not operate the DC load-break switch on the product.
5. In the event of a fault, disconnect the AC circuit breaker, or keep it disconnected in case it has already tripped, and secure it against reconnection.

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 fire or explosion when batteries are fully discharged

A fire may occur due to incorrect charging of fully discharged batteries. This can result in death or serious injury.

1. Before commissioning the system, verify that the battery is not fully discharged.
2. Do not commission the system if the battery is fully discharged.
3. If the battery is fully discharged, contact the battery manufacturer for further proceedings.
4. Only charge fully discharged batteries as instructed by the battery manufacturer.

Danger to life due to burns caused by electric arcs through short-circuit currents

Short-circuit currents in the battery can cause heat build-up and electric arcs. Heat build-up and electric arcs may result in lethal injuries due to burns.

1. Disconnect the battery from all voltages sources prior to performing any work on the battery.
2. Observe all safety information of the battery manufacturer.

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 measurement ranges designed for the maximum AC and DC voltage of the inverter.
2. Only use measuring devices with measurement ranges designed for the maximum DC voltage of the battery.

Risk of burns due to hot inverter enclosure parts

Some parts of the inverter enclosure can get hot during operation. Touching hot enclosure parts can result in burn injuries.

1. During operation, do not touch any parts other than the enclosure lid of the inverter.
2. Wait until the inverter has cooled down before touching the enclosure.

Risk of fire

1. To reduce the risk of fire, connect only to a circuit provided with a branch-circuit overcurrent protective device with a maximum rating of 50 A (SBSE3.8-US-50 / SBSE4.8-US-50 / SBSE5.8-US-50 / SBSE7.7-US-50) or 60 A (SBSE9.6-US-50 / SBSE11.5-US-50) in accordance with the National Electrical Code^® ANSI/NFPA 70 or the Canadian Electrical Code^® CSA C22.1.

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 the product in case of interruption of work or after finishing work.
4. Only operate the product when it is closed.
5. Close tightly all enclosure openings.
6. Only use listed rain-tight or liquid-tight conduit fittings to attach the conduits to the product.

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).
3. If the product must be opened in freezing conditions, make sure that the DC load-break switch is free of ice.

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.