Revision 1.0 - 12/08/2013 81
High Voltage Lock Off and Isolation procedure
SAFETY CRITICAL
3.7 Remove the cover on the HV distribution box and using a multi-meter (1000V dc CAT III type or greater), ensure that the following volt-
age measurements are less than 50V dc :-
· Voltage between the positive and negative bus bar
· Voltage between the positive bus bar and chassis
· Voltage between the negative bus bar and chassis
3.8 If the voltages measured are greater that 50V dc, STOP this isolation procedure, replace the cover on the HV distribution box and
do not carry out any further work on the bus - seek Wrightbus Engineering Support.
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