Disconnecting the Battery from Voltage Sources

Qualified person

DANGER

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

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

  1. Have the inverter and the battery mounted, installed and commissioned only by qualified persons with the appropriate skills.
  2. Disconnect the system from voltage sources and make sure it cannot be reconnected before working on the device.
  3. Do not touch non-insulated parts or cables.
  4. Wear suitable personal protective equipment for all work on the product.

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.

  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.

CAUTION

Risk of injury due to electric shock after decommissioning.

Voltages of 60 V can be present at the DC intermediate circuit between the battery and inverter even after the battery is decommissioned. Touching live components in the DC intermediate circuit can result in injury, even if the voltage in question is low.

  1. Do not touch any live components in the DC intermediate circuit.

Procedure:

  1. Disconnect the inverter from all voltage sources ( > Disconnecting the Inverter from Voltage Sources).
    2. 12056880396
  2. Switch off the external switch on the outside of the battery cabinet door.
    3. 12056880780
  3. Press the SWITCH control element on the battery management system.
    4. 12056881164
  4. Disconnect the DC cables at the CHARGER+ and CHARGER- connections on the battery management system.
    5. 12056881548
  5. Use a suitable measuring device to ensure that no voltage is present at the CHARGER+ and CHARGER- connections.

    Also see:

    Disconnecting the Inverter from Voltage Sources
    Cleaning and Maintenance