4
Federal Signal
signaling.fedsig.com
Figure 6 Side view of Ex de surface mount
Figure 7 Side view of Ex de surface mount (High
Profile Lens Version)
3X M20 GLAND ENTRIES
SEE ACCESSORIES FOR
REPLACEABLE E-BOX END CAPS
227.4 mm
(8.95 in)
272.0 mm
(10.71 in)
Wiring the Device
SAFETY MESSAGES FOR WIRING
:
When installing and operating flame-proof electrical
equipment, the relevant national regulations for
installation and operation (e.g., EN60079-14, IEC Wiring
Regulations and NEC/CEC) must be observed.
•
To maintain the flame-proof integrity of the
enclosure, DO NOT damage the LED lens cover or
threads while disassembling or reassembling unit.
•
To avoid electrical shock hazards, do not connect
wires when power is applied. Failure to observe this
warning may lead to serious injury or death.
•
Painting and surface finishes, other than those
applied by Federal Signal Corporation, are not
permitted.
•
Cable termination should be in accordance with
specifications applying to the application. Federal
Signal recommends that all cables and cores should
be fully identified.
•
Ensure that only the correct equipment-certified
glands are used and that the assembly is shrouded
and correctly earthed. Gland entries are M20-1.5 6H
with an option for the M25 entry on the end of the
increased safety box models. See Table 3 on page
26 for choosing the correct cable entry devices for
Equipment in Potentially Explosive Atmospheres.
•
Because of space limitations, ensure the cable cores
within the unit are not too slack.
•
In all countries, the wiring must comply with all
national and local codes and standards.
•
Ensure that all nuts, bolts, and fixings are secure.
Preparing to Wire the Ex d Flameproof
Models
SHOCK HAZARD: To avoid electrical shock hazards,
do not connect wires when power is applied. Failure to
observe this warning may lead to serious injury or death.
CIRCUIT BOARD DAMAGE: The DC beacons are polarity
sensitive, and MAY BE DAMAGED by incorrect electrical
hookup. When connecting the DC beacon to the voltage
supply lines, POLARITY MUST BE OBSERVED. In
addition, damage will result if the voltage rating of the
particular model is exceeded by more than 10 percent.
This section has wiring instructions for the two
flameproof models:
•
G-LED 24 Vdc
•
G-LED 120-240 Vac
Ex d units are supplied with a six position PCB mounted
screw terminal block. The maximum wire gauge is 4 mm2
(12 AWG). The wire must be rated 85 °C or higher. Use
only stranded cable to terminate the beacon. The cross-
sectional area of the primary earth (ground) must equal
the cross-sectional area of the phase conductor.
Cable termination for these models should be in
accordance with specifications applying to the
