Device-Specific Safety Instructions - Bender ISOMETER iso175 Manual

ISOMETER® iso175
3

Device-specific safety instructions

DANGER High voltage
Danger to life
The ISOMETER® is galvanically connected to the HV busbar of the vehicle. When it is installed, up to
1000 V are applied to the electronic contacts of the HV+ connector and the adjacent components.
This applies also to the switched-off condition, i. e. when the device is not connected to the 12 V /
24 V voltage supply! The HV+ connector at the device is therefore furnished with a warning (see
below). In addition to the general safety instructions (see chapter "General information", page 5),
it must also be ensured that prior to the installation and always when working on the connections
of the device (see chapter "Wiring", page 22), the HV connections are safely disconnected and
reconnecting them is made impossible for the duration of the work.
The system integrator is responsible for the safety of the entire system. He must ensure that there is
sufficient protection against accidental contact according to IEC 61010 during the normal operation
of the device.
WARNING
Fire hazard
The device is equipped with short-circuit proof inputs. To protect the vehicle's electric system in the
event of a fault, customers must provide a corresponding back-up fuse or miniature circuit breaker in
the electric circuit of the device's voltage supply.
ADVICE
Make sure when integrating the device that the function of the device cannot be impaired by
condensation or corrosion.
ADVICE
When the energy storage device / battery is charged (e. g. at a charging station), care must be taken
that not more than one isometer (e. g. on the vehicle side and on the charging station) is active at the
same time in order to prevent devices from influencing each other. These devices can disconnect the
connection to chassis ground with a corresponding control command.
ADVICE
Where IT systems are to be galvanically connected, this connection must be ensured by a low ohmic-
resistance connection. Intrinsic diodes, such as body diodes of MOSFET transistors for instance, can
adversely affect the insulations resistance measured value so that the specified tolerances can no
longer be met.
ADVICE
When the periodic self test is deactivated (see chapter "Periodical / automatic self test", page 15),
the user must verify that the HV system is connected properly by a different method (e. g. by
analysing the high voltage or similar methods).
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