Delta Controls GR7 - Manual (Page 2)

NC
C OM
NO
NC
C OM
NO
EARTH SCREW
TERMI NA L BL OCK
NORMA L R H
ELECTRICAL ENTRY
Fig 5
WIRING
Junction box cable glands and adaptors. Optional Junction box code ‘C’ is supplied with an
M20 x 1.5 tapped hole blanked with a red plug. Discard the red plug and fit a suitable
proprietary brass or nylon M20 cable gland with thread length of 10 mm. Fit a fibre washer to
the outside. See diagram 1.
Alternately the junction box may be supplied from the factory with a threaded adaptor ready to
accept the customer’s gland or conduit system.
Alternatives:
1) a metal or nylon adaptor may be used to accommodate other sizes of gland eg NPT, or
conduit system. See diagram 2.
Earthing / grounding – Use earthing point provided inside the junction box (when fitted). The
user must make suitable local earthing arrangement, if required, to ensure that metal glands /
adaptors are earthed.
Pollution degree – all products are suitable for use in pollution degree 3.Ref EN60947-5-1
Electrical Isolation – these products are not suitable for electrical isolation. Always isolate
circuit separately to carry out any electrical work.
TABLE A – MICROSWITCH RATINGS
SWITCH
CODE
(type)
UL/CSA
MICROSWITCH
RATING
(Resistive)
*See Note
IEC 947-5-1/EN 60947-5-1 RATING
Designation
&
Utilization
Category
VA
Uimp Ui RATING (Ie/Ue)
MAKE
BREAK
HS, HD,
HR
11A @ 110/250 VAC
0.8kV 250V
0.6/0.3A @ 120/240 VAC AC14/D300 AC 432 72
5/0.5 @ 30/125 VDC 0.22/0.1A @ 125/250VDC DC13/R300 DC 28 28
HP, HQ,
HT
5A @ 250 VAC
0.5kV 250V
0.6/0.3A @ 120/240 VAC AC14/D300 AC 432 72
2A @ 30 VDC 0.22/0.1A @ 125/250VDC DC13/R300 DC 28 28
HV, HW,
HY
1A @ 125 VAC
0.5kV 120V
0.3A @ 120 VAC AC14/E150 AC 216 36
*1A @ 30 VDC
The electrical rating is dependent on the microswitch fitted to the switch. The electrical
rating is defined by each approval that the microswitch complies with and is shown on the
product nameplate, ie UL/CSA or IEC. It should be noted that the switch must be used
within the electrical rating specified from the approval you require. Table A lists the
actual IEC ratings against the Designation and Utilisation Category marked on the
nameplate. If in doubt, seek guidance from factory.
JUNCTION BOX
FIBRE
WASHER
DIAG 1
CABLE GLAND ASSEMBLY
JUNCTION BOX
FIBRE
WASHER
DIAG 2
ADAPTOR ASSEMBLY
Fig 6
MO DE L GR 7 W ITH TER M IN AL
EN CLO SUR E CO DE K
Fig 7 MODEL GR7 WITH TERMINAL ENCLOSURE CODE J
Low Voltage Directive (LVD) – 2006/95/AC. Switch products with enclosure codes ‘W’ and
‘A’ supplied CE-marked must be installed and used in accordance with the main instructions
and this addendum supplied with each product. Products rated lower than 50V ac and 75 V dc
are outside the scope of the LVD, and therefore, do not require CE-marking under this
directive. The LVD does not apply to products with enclosure codes ‘H’, ‘K’, ‘R’, ‘M’, ‘N’ for use
in hazardous areas. Switch products with enclosure codes ‘H’, ‘K’, ‘R’, ‘M’, ‘N’, are covered by
the Explosive Atmospheres Directive ATEX – 94/9/EC and when CE-marked will indicate
compliance with this directive alone. The following directives do not apply to switch products
manufactured by Delta Controls:
Electromagnetic Compatibility EMC – 2004/108/EC
Machinery Safety Directive MSD – 2006/42/EC
Declaration of Conformity
We: Delta Controls Ltd
Island Farm Avenue
West Molesey
Surrey, UK
KT8 2UZ
As the manufacturers of the apparatus listed, declare under our sole
responsibility that the products listed below:
Pressure, Pressure Difference, Temperature & Flow switches series “W” or “A”:
201, 202, 203, 281, 204, 207, 208, 209, 231, 232, 233, 234, S21, S22, S24, GR2, GR4, VM2, VM4.
301, 303, 304, 381, 384, 306, 386, 310, 316, S31, S34, GR3, GR6.
721, 731, 771, 722, 732, 772, 723, 733, 773, 781, 734, 774, 741, 742, 743, 744, S71, GR7.
131.
To which this declaration relates are in conformity with the following
relevant standards or parts thereof:
EN 60947-1 :1992
Low voltage switch gear and control-gear-general rules.
EN 60947-5-1:1992 Low voltage switch gear and control-gear-control circuit devices and switching
elements.
EN 60529: 1991 Specification for classification of degrees of protection provided by enclosures.
EN 60950:1992 Safety of information technology equipment including electrical business equipment:
section 2.5.
BS 6134:1991
Specification for pressure and vacuum switches.
And thereby conforms to the requirements of the Low Voltage Directive
73/23/EC amended by 93/68/EEC.
Signed:
………………….
R. Harrison
Managing Director
Original dated 22
nd June 2000
Rev. B dated 12 th August 2009