This section contains safety information that must be observed at all times when working.

The product has been designed and tested in accordance with international safety requirements. As with all electrical or electronical devices, there are residual risks despite careful construction. 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.


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

The DC conductors connected to a battery may be live. Touching live DC conductors 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. Do not touch non-insulated parts or cables.
  3. Do not remove the terminal block with the connected DC conductors from the slot under load.
  4. Wear suitable personal protective equipment for all work on the product.
  5. Observe all safety information of the battery manufacturer.


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 inverter is classified as "TNV-1" and offers protection against overvoltages of up to 1.5 kV.


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 or explosion. Death or lethal injuries due to fire or flying debris can result.

  1. In case of error, only carry out corrective measures specified by SMA Solar Technology AG Troubleshooting). If no corrective measures are specified, do not perform any actions on the product. Contact the Service.
  2. Ensure that unauthorized persons have no access to the product.
  3. Disconnect the AC circuit breaker and secure it against reconnection.
  4. Disconnect the battery from the product via an external disconnection device.


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.


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 injury due to weight of product

Injuries may result if the product is lifted incorrectly or dropped while being transported or mounted.

  1. Transport and lift the product carefully. Take the weight of the product into account.
  2. Wear suitable personal protective equipment for all work on the product.


Damage to the enclosure seal in subfreezing conditions

If you open the product or disconnect the Power Unit and Connection Unit 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 0°C (32°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). Observe the applicable safety regulations.
  3. Do not disassemble the Power Unit and Connection Unit unless the ambient temperature is at least 0°C (32°F) and conditions are frost-free.


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 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.


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.


Destruction of the measuring device due to overvoltage

  1. Only use measuring devices with a DC input voltage range of 600 V or higher.

Electrical installations (for North America)

All installations must conform with the laws, regulations, codes and standards applicable in the jurisdiction of installation (e.g. National Electrical Code® ANSI/NFPA 70 or Canadian Electrical Code® CSA-C22.1.).

  1. Before connecting the product to the utility grid, contact your local grid operator. The electrical connection of the product must be carried out by qualified persons only.
  2. Ensure that the cables or conductors used for electrical connection are not damaged.