Using PTO EL
Work on electric power take-off (PTO EL)
Scania Truck Bodybuilder
22:10-834 Issue 2 2021-11-11
© Scania CV AB 2021, Sweden
18 (32)
General requirements
IMPORTANT!
• The bodywork must never generate a higher voltage than the VCB voltage in the
vehicle. It is prohibited to return power to the vehicle's VCB system.
• Position bodywork electrical equipment so that cables are as short as possible.
Short cables mean a reduced risk of EMC
1
interference and installation problems.
• All VCB components must comply with applicable standards regarding electrical
safety and comply with ingress protection class IP6K7 or IP6K9K depending on
the location on the vehicle. This also applies to connected connectors. Connectors
that can be disconnected without tools must also comply with IPXXB (R100)
when they are not connected.
• The vehicle's insulation status is monitored using an insulation monitoring device
(IMD). It is prohibited to have an active IMD in the bodywork when the electric
power take-off is activated. This applies if the bodywork VCB system is galvan-
ically connected to the vehicle's VCB system.
• The bodywork VCB system must be galvanically separate from bodywork earth
and the VCA system. An insulation test should be carried out in accordance with
ECE-R100, ISO 6469-1, ISO 6469-3.
• All electrical VCB connections in the bodywork must be designed to prevent un-
intentional polarity reversal
• The bodywork VCB system must have passive discharging, which means that the
voltage drops below 60 V within 5 minutes of deactivation of the power take-off
• The bodywork VCB system must have active discharging, which means that the
voltage drops below 60 V within 3 seconds of deactivation of the power take-off.
This applies when requesting from the vehicle or detecting an open circuit.
• All VCB components must have electrically conductive casing
1. The equipment's ability to function satisfactorily in its electromagnetic environment without
causing unacceptable electromagnetic interference for other equipment.
