BMW 3: Removing the round high-voltage connector
The following figures show the approach for releasing the round high-voltage
connector, as used
for example on the high-voltage cable from the Electrical Machine Electronics to
the convenience
charging electronics.
Depending on the installation location, different connectors may be used. They
are distinguished by an
additional black sliding piece at the connector. The following graphic shows
both variants.

Removing the round high-voltage connector
- The round high-voltage connector is connected to the high-voltage
connection of the corresponding high-voltage component and locked.
In the case of connectors with a black sliding piece, the sliding piece
must be pushed to the end position in the direction of arrow.
- The two locking elements must be pressed together in the direction
of arrow. The mechanical lock of the connector at the connection of
the high-voltage component is then removed.
- While the locking elements are being pushed closed together, the
connector must be removed in direction of arrow.
When reconnecting the high-voltage cable the locking elements must not be
pushed together.
Instead, it is sufficient to slide the connector onto the high-voltage
connection of the component
and push the sliding piece towards the high-voltage component if needed. Ensure
that the locking
elements engage ("clicking" noise). In addition, the engaging of the locking
elements should be
checked by subsequent pulling on the connector.

Example of structure of the round high-voltage connector
- High-voltage cable
- Actuation points on locking elements
- Connector housing
- Locking element
- Connection 1 for bridge in the connector
- Connection for shielding
- High-voltage connection, pin 2
- Mechanical encoding
- Connection 2 for bridge in the connector
- High-voltage connection, pin 1
In contrast to earlier high-voltage connectors, the connections for the
bridge in the high-voltage
connector are not evaluated in the G20 PHEV.
READ NEXT:
The isolation monitoring determines whether the isolation resistance between
active high-voltage
components (e.g. high-voltage cables) and ground is above or below a required
minimum value. If
the i
The Electrical Machine Electronics is made up internally of three
subcomponents:
Bidirectional DC/AC converter
Unidirectional DC/DC converter
EME control unit
The Electrical Machine Electronics
The DC/DC converter in the Electrical Machine Electronics of the G20 PHEV is
able to adopt the
following operating modes:
Standby (also in the event of a component fault or short circuit, powe
SEE MORE:
Concept
The high-beam Assistant detects other traffic
participants early on and automatically switches
the high beams on or off depending on the traffic
situation.
General information
The high-beam Assistant ensures that the high
beams are switched on, whenever the traffic situation
allows. In the l
The power electronics for the activation of the electrical machine are mainly
made up of the
bidirectional DC/AC converter. It is a pulse converter with a 2-pin DC voltage
connection and a 3-phase
AC voltage connection. This DC/AC converter can work as an inverter and conduct
electrical energy
fr