ABTQ-74 rev 01 (Last review: 05 Oct 06)
2/2
A B Controls and Technology Ltd
Sanderson Street, Lower Don Valley, Sheffield
Earthing/Grounding
The HVJB unit is provided with an internal and external earthing/grounding facility. This must be
connected to the appropriate earth bonding circuit before electrical power is connected to the
contents of the enclosure. Any earth/ground conductor brought into the enclosure must be
terminated onto the enclosure internal earth/ground stud.
Operation
1. The lid must be secured using all the lid screws provided in order to maintain the IP rating.
2. No attempt must be made to remove the enclosure lid whilst electrical power is connected to
the contents of the enclosure.
3. The earthing/grounding facility must be connected to the earth bonding circuit at all times when
electrical power is connected to the enclosure.
Maintenance
Routine maintenance is a requirement of IEC 60079-17:1996 and is also likely to be a requirement
of local Health and Safety legislation. The laws of the applicable country must be considered and
maintenance checks carried out accordingly.
Additional checks that are advisable to ensure the efficiency of ABTECH ‘S’ range enclosures on
which the HVJB is based are:-
Activity Frequency
1
Check that the lid seal is not damaged and is in place
Each time the
enclosure is opened
2
Check that all lid fixing screws are in place and secured
Each time the
enclosure is opened
3
Check that all gland plate fixing screws are in place and secured
Each time the
enclosure is opened
4
Check that the mounting bolts are tight and free of corrosion
Annually
5
Check the security of all cable glands
Annually
6
Check the enclosure for damage
Annually
Chemical attack
The ABTECH HVJB is manufactured from 316 stainless steel. The following additional material are
also used :-
Neoprene or silicone rubber,
Copper,
Brass,
Cast epoxy resin.
The user should give consideration to any aggressive and corrosive substances that may be
present in the environment in which these enclosures are to be used to determine the suitability of
these materials to withstand those substances.
Static hazard
The HVJB does not present a hazard from static electricity.
Vibration
The HVJB is designed for use in areas subject to normal industrial levels of vibration. They are not
designed for use in areas subject to intentional or extreme conditions of vibration.
