Safety Instructions; Conformity With Standards; Field Of Application; Application/ Properties - Eaton GROUSE-HINDS Série Mode D'emploi

Explosion protected control units
made of plastic or stainless steel type GHG 44.
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Safety instructions

Target group:
For skilled electricians and suitable
qualified, instructed personnel in
accordance with national legislation,
including the relevant standards and, where
applicable, in acc. with IEC/EN 60079-14 on
electrical apparatus for explosive atmospheres.
The plastic or stainless steel control units
GHG 44. are not suitable for zone 0 and zone
20 hazardous areas.
The temperature class and explosion group
marked on the control units shall be observed.
Modifications to the control units or
changes of their design are not permitted.
They shall be used for their intended
purpose and in perfect and clean condition.
Prior to their taking into operation, the control
units will have to be checked in accordance
with the instructions as per section 6.
The requirements of the IEC/EN 60079­31
regarding excessive dust deposits and
temperature to be considered from the user.
Observe the national safety rules and
regulations for prevention of accidents as
well as the safety instructions included in
these operating instructions set in italics the
same as this text!
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Conformity with standards

The apparatus are conform to the standards
specified in the EC-Declaration of conformity,
enclosed separately.
References to standards and directives in these
operating instructions always relate to the latest
version. Other additions (e.g. details relating to
the year) shall be observed.
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Field of application

The plastic or stainless steel control units
GHG 44. are suitable for use in zone 1, 2 and
21, 22 hazardous areas acc. to
IEC/EN 60079-10-1 and IEC/EN 60079-10-2.
The enclosure materials employed, including
the exterior metal parts, are made of high-quality
materials which ensure a corrosion protection
and resistance to chemical substances
corresponding to the requirements in a "normal
industrial atmosphere":
- glass-fibre reinforced polyester
- impact resistant polyamide
- special steel AISI 316 L
In case of use in an extremely aggressive
atmosphere, you can obtain information
concerning the chemical resistance of the
materials used from your Cooper Crouse-Hinds
branch.
5 Application / Properties
The plastic or stainless steel control units
GHG 44. are designed for the on-site control of
electrical installations in explosive atmospheres.
The devices are individually fitted with built-in
components that meet their specific application.
The control units can, at option, be delivered
fitted with series terminals up to 2,5mm² under
the hinged framework and wired ready for
connection by the customer.
Adequately marked special versions of the
control units can be operated in "intrinsically
safe circuits" .
The electric limiting values applicable to
"intrinsic safety" shall be observed.
The respective details on the equipment with
electrical contacts are given on the component
bases. The version fitted with gold-tipped
contacts is marked with a "G" (for max. current
load see Technical data).
In order to achieve a reliable isolation, the
normally closed contacts are designed as
forced break contacts.
Where required, the bases are fitted with 0.6 W
resistors, fine-wire fuses and diodes (max.
dissipated energy 1 W).
The measuring instrument serves for the
indication on-site of electrical values. For the
type of measuring mechanism, accuracy and
connected version, see "Technical data").
When the switching collar on small control
switches is cut out at the respective locking
position, they can be padlocked (locking shackle
Ø up to 5 mm). Ex 23 control switch actuator
elements shall be provided with a drilled hole of
5.5 mm Ø at the respective locking position on
their switching collar and can thus be padlocked
as described before.
In these enclosures, the 4-pole pushbutton
contact block requires 2 standard contact block
mounting spaces.
The actuator is situated in the centre of the 2
mounting spaces.
The 4 pole pushbutton contact can be added
with the standard CCH actuators.
If the 4 pole pushbutton contact is added with
an Emergency STOP Mushroom-head pushbut-
ton actuator, then you have to use the actuators
with CCH order number GHG 410 1437R.... .
This actuators can be recognize by the red
thrust washer and black inserting sign.
At option, the Ex 29 control switches are
provided with a fitted locking device so that
they can also be padlocked.
GB
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