Stranded wires – HV+ and HV-

DANGER

Danger to life from electric shock!

After switching off the HV circuit, the buffer capacitors for the DC bus can still have a charge and lead to a life-threatening DC voltage if they are not discharged via an external circuit.

Steps to prevent:

  • Prior to all work on the device, the HV power supply is to be separated from the main switch and secured against restarting.
  • After switching off, expect a discharge time of at least 30 minutes.
  • Measure the terminal voltage, e.g. in the HV DC bus between the HV+ and HV- terminals to ensure that the terminal is voltage-free.
  • Caution: A voltage-free state is not signalled!
  • Use external discharge circuit. See 'Calculation example – discharging circuit'.

Description:

Supply voltage from the high-voltage battery for the DC link

HV +: connection to HV voltage +

HV -: connection to HV voltage -

Technical data:

Design:

Design

Pins

 Length

Type

Manufacturer

10 mm2 single conductors,

screw-type

2 x 1

 Approx. 30 cm

Silicone wire

Multi Contact
Assignment:

Signal

Color
mark

Description

HV +

Red

HV voltage +

HV -

Blue

HV voltage -

Connection:

Cable

2 single conductors, apply copper shield

Shield connection

Apply shield on both sides:

  • Cold plate
  • Connect the end of the shield on the battery side to the designated casing ground.