I-PRGE-32 IOM PROTECTA LED EM IEx (English)
issue 07 05/05/2020
4
3.4 Cabling and Cable Glands
The temperature conditions at the supply cable entry point are such that 70°C (ordinary PVC) cable can be used. Equipment
certified cable glands and sealing plugs must have suitable
“Geração E”
approval. When installed the cable gland or sealing
plug should maintain the IP rating of the enclosure, IP66/67.
Four entries are provided. Three entries are fitted with suitably approved blanking plugs, the fourth entry with a transit plug.
M20 x 1.5 entries are standard, other sizes are available on request. The standard entry configuration is with an earthed
metal plate with tapped holes mounted in the body.
3.5 Electrical Connections and Testing
If any work is to be done on any luminaire already connected to the electrical system, the luminaire must be isolated from the
system. The diffuser cover is swung down and removed, if necessary, by swivelling back as far as possible then lifting off. To
access the mains terminals loosen the four fixing screws, slide the reflector/gear tray over the slots and swing the
reflector/gear tray down. Luminaires are supplied suitable for looping and through wiring. Screw type or screw-less “cage
clamp” terminals are fitted in the range of luminaires. Mains terminal blocks are marked L N Earth.
Mains terminal blocks on the emergency luminaires are marked Lc Ls N Earth.
Switching the voltage on the Ls connection enables the luminaire to be switched on and off without the emergency function
being activated. The Ls connection is insulated from L and has a signal function only drawing a very small current.
The emergency units can be connected as switched, un-switched or non-maintained units. The switching facility is to allow
the luminaire to be switched off whilst still charging the battery. Where switching is required, the un-switched line (Lc) is
connected to the continuous mains supply. A link is fitted during assembly between Lc and switched line (Ls); this is
removed for the switch-able mode. If the link is removed and Ls not supplied, the unit will only operate on emergency.
The maximum amount of insulation allowed beyond the throat of the terminal is 1mm. The normal method of insulation
testing is to connect Live and Neutral together and test between this point and Earth to prevent the risk of damage to the
electronic control gear. However, if this is not possible luminaires can be tested with an insulation tester that complies with
IEC 364 or BS 7671 with a maximum output current of 1mA and output voltage of 500V dc. (Units damaged by incorrect
insulation testing can be detected). Before completing the wiring, ensure that all the connections are correctly introduced into
place before reassembling the luminaire.
4.0 Emergency Operation
4.1
General description of operation
The luminaire will go seamlessly into emergency mode at not less than 60% rated supply voltage and will remain in mains
mode above 85% of rated supply voltage.
The charging function is monitored continuously, there is a check for over charging and no charging. In case of a control gear
error, the indicator will flash quickly on and off. Batteries will fully charge within 24hrs.
After a complete battery discharge, the unit will switch over to a low discharge current mode.
LED display
The status is displayed by means of green LED signals.
The LED will flash slowly, if the batteries are being charged.
The LED will be steady at full charge.
The LED will flash quickly if there is a fault or a warning.
The LED will be off during emergency operation.
4.2 Low Temperature Operation
At battery temperatures below 10°C charge time can increase. This temperature is equivalent to the luminaire operating at -
5°C with the LEDs on or at +5°C with the LEDs off.
Under operating conditions where the ambient temperature is below 0°C for long periods the luminaire should be purchased
with Low Temperature option. This incorporates a heater to maintain the batteries at a sufficient temperature.
5.0 Servicing and Operation
S
afe servicing behind the gear tray requires the mains supply to be isolated.
5.1 Opening and Closing the Cover
Insert a screwdriver into one of the slots in the clamping bar with the end of the tool located into the outer flange of the body
as a fulcrum point, a wide blade screwdriver is recommended. Gently lever the tool away from the diffuser, the clamping bar
will begin to open. Insert the tool in the other clamping bar slot and gently lever away from the diffuser, the clamping bar will
open and the cover will be retained by the hinge. Should difficulty be experienced reinsert the tool in the first slot and repeat
the procedure.
The procedure for closing and securing the cover is as follows:
