Power Off

This section provides instructions for powering off the Power Link 2000.

Required Tools and Materials

 

Multimeter (meter and probes rated for 1000 V)

 

Lockout/tagout equipment

Power Off the Station

You must be a ChargePoint Certified Technician to power off the charging station, or warranty limitations apply.

  1. An Express Plus configuration can have one or more Power Blocks connected to one or more Power Link 2000s in what is called a cluster. Refer to the site's single line diagram (SLD) and identify the following:

    • All Power Blocks and/or Power Link 2000s to be serviced.

    • All Power Link 2000s within the same cluster as the products identified above.

  2. End all charging sessions on all Power Link 2000s identified in step above.

    Failure to end the charging session before beginning service could damage hardware components. Such damaged components may need to be replaced.

  3. Determine where to disconnect the high voltage (HVClosed High Voltage) power. Refer to the site's SLD and identify the location of control elements such as circuit breakers and disconnect switches.

    Technical illustration depicts the procedural step.

    (a) Transformer configuration

    (b) Ground connection

    (c) Electrical panel

    (d) Circuit breakers

    (e) AC disconnect switch (optional)

    There are two methods for HVClosed High Voltage power disconnect:

    • At the site electrical panel, turn the circuit breaker (d)  switch to the OFF position to power off all Power Blocks and Power Link 2000s downstream of the breaker.

    • If an AC disconnect switch has been installed between Power Block and the site electrical panel, turn the AC disconnect switch (e) to the OFF position to power off all Power Blocks and Power Link 2000s downstream of the AC disconnect switch.

    • Follow local code and refer to the site lockout/tagout procedure to de-energize the station.

    • Powering off Power Block will result in LV DCClosed Low Voltage Direct Current-connected Power Link 2000s losing power. Power Link 2000 can receive power from two Power Blocks and will remain powered until both Power Blocks are powered off.

    • A Power Link 2000 may be configured in a cluster wherein it receives HV DCClosed High Voltage Direct Current power from multiple Power Blocks. Be sure to power off all Power Blocks in the cluster. Note that high voltage hazard may still be present if Power Link 2000 is not powered, as LV DCClosed Low Voltage Direct Current and HV DCClosed High Voltage Direct Current power may come from different Power Blocks. Consult site drawings.

    • Ensure that the status light is off (unlit) for all de-energized Power Blocks.

  4. Wait for energy to dissipate (approximately five minutes).

  5. Verify that Power Link 2000 is de-energized.

Check Power Block Status Light

Complete the following steps to check the Power Block status light:

  1. Open the security panel to check the status light.

    Open the security panel to check the status light

  2. The status light must be off (unlit). If the status light is on (glowing any color), do not proceed further with servicing. Wait the required time for energy to dissipate.

When you power on, the status light should turn on (light up yellow). If the light is red, contact ChargePoint at chargepoint.com/support.

Verify the Power Link 2000 is De-Energized

Complete the following steps to verify the Power Link 2000 is de-energized:

  1. Remove these:

    1. Top cap

    2. Front lower and upper covers

  2. Open the upper door.

    Do not touch LVClosed Low Voltage components without verifying that they are de-energized. Refer to the next step for verification details.

  3. Hold the multimeter's probe tips against the HV DCClosed High Voltage Direct Current input bus bar bolts to verify that voltage is zero.

    The illustrated probe contact points on the left side and right side are for the left side and right side HV DCClosed High Voltage Direct Current inputs, respectively. If both HV DCClosed High Voltage Direct Current inputs are present, verify that the power is off on both the HV DCClosed High Voltage Direct Current input's bus bars.

    Hold the multimeter's probe tips against the HV DC input bus bar bolts to verify that voltage is zero.