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CONNECTION Of THE POWER UNIT
4.3.1.1 High Voltage Interlock Loop (HVIL) - Exemplary connection
The HVIL
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Figure 21:
4.3.1.2 Protective earth
The protective earth (PE) serves for electrical safety particularly personal protection in
error case. The connection cable of the protective earth should be as short as possible.
It is recommended to use a metal-powder tape.
Figure 22:
is led as signal loop through all components of the HV system.
is a leading contact in the corresponding connectors (pilot contact).
switches off the contactors of the HV battery when the signal loop is interrupted.
=>
„3.2.3 Electrical data High Voltage Interlock Loop (HVIL)"
HV-Battery
+
+
+
Interlock
Other
Example of a HVIL wiring
Name
function
Protective earth
connection
Protective earth
X3A
HVIL
X1A
T6
APD
Cross-section
Tightening torque
Self-locking nut M6
for ring crimp con-
6 Nm ± 0.3 Nm
nector
HV-DC
61
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