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DC Charger
Check points for absence of voltage
Follow this procedure after LOTO actions to reach status 2 in the equipment.
1.
Wear the appropriate PPE based on the electrical arc studies and the risk assessment carried out
by the installer.
2.
Ensure the correct operation of the multimeter.
3.
Once the equipment is stopped, wait until the different storage buses are discharged (4 or 5 min).
4.
Check that power module LEDs are NOT illuminated.
5.
Check the absence of voltage, both in the plates upstream of the circuit breakers and in the plates
downstream of the circuit breakers.
6.
Check that there is no voltage in the DC output plates.
7.
There will be no voltage in the equipment.
CAUTION
The absence of voltage must be verified once an equipment has been isolated, with the necessary means and
PPE.
In addition, the charger specific diagrams of the installation should be reviewed.
Even the multimeters have scheduled revisions, it is convenient always to check the multimeter is working fine
before taking any measure, especially to prove dead. This might be damaged and show false values. Use a
commercial proving unit to check it.
Use appropriate equipment for DC power measures.
It is responsibility of the technical personnel to have their tools calibrated and in good condition.
Always wear the PPE according to electric risk and to the current OSHA regulations.
Ford Pro contact info: chargingsupport@fordpro.com and 1-800-34-FLEET
CHECK POINTS FOR ABSENCE OF VOLTAGE
NB 120 Installation Manual
49
EN
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