Conversion wiring for fittings with HF Ballast
When modifying a mains luminaire fitted with one, or more, electronic ballasts in order to accept an emergency conversion, it will
usually be necessary to rearrange the wiring and component layout of the fitting to obtain the best electromagnetic performance
whilst still paying due attention to thermal and safety criteria. The mains supply to the Electronic ballast is at a low frequency
(LF), typically 50 Hz, and the output leads from the electronic ballast to the lamp are at a high frequency (HF), typically 10-100
kHz. Conversion should be carried out taking into account the following points:
1
2
3
4
5
6
7
8
9
10
11
12
If possible the luminaire should be converted integrally, but if this is not possible a remote conversion can be used, but
with the interconnecting looms kept as short as possible, and where possible, the LF connections separate from the HF
ones.
a)
Ensure that the normal 240V supply and Lin/Lout connection pair (LF) are routed away from the high
frequency connections. Segregate the looms, do not cable tie them together
b)
For Lite-Plan standard remote looms the colour code is as follows:
1 White; 2 Violet; 3 Grey; 4 Blue; 5 Yellow; 6 Red; 7 Black; 8 Pink; Lin Brown; Lout Orange
c)
Observe any lead length stipulations on the HF ballast. Lead length must be considered both from the HF
ballast to the emergency module and from the emergency module to the lamp together.
Ensure any fixings are carried out in a similar fashion to those employed by the original luminaire manufacturer and that
the cables used have the same specification (minimum 105C rated PVC)
Segregate the mains (LF) wiring, and inverter output [terminals 1-4] (HF) wiring, by separately routing the cables in
order to minimise Electromagnetic interference between the two.
For HF Ballasts keep the hot wires from the ballast as short as possible. (If the hot wires are not marked these wires
will usually be the ones that are short already.)
a)
To keep these wires short it will usually be preferable to position the emergency module so as the module 8
way terminal block is in close proximity to the emergency lampholder, or, with a linear lamp, in close proximity to one of
the emergency lamp holders.
b)
If a remote conversion is to be used then place the incoming cable entry in close proximity to the emergency
lampholder. The loom connections to this cable entry should be kept as short as possible both inside and outside the
fitting.
c)
The electronic ballast to be used with the emergency lamp should be placed so as the lamp connection
terminals are near to the 8 way terminal block, or cable entry. With this layout the 'hot' wires can be routed directly to
the module terminals 7 & 8, and then from terminals 1 & 2 to the nearest lampholder
Place the battery where it won’t get too hot.
a)
Avoid placing the battery too close to the lamps especially the cathodes, or the ballast.
b)
The battery wiring will have negligible effects on the EMC.
c)
Do not connect the batteries until the Unswitched 240V supply is permanently assured.
Using the Standard Wiring Circuits, where shown, convert the luminaire wiring with reference to the original circuit and
routing, and where possible the original ballast manufacturer’s instructions.
a)
On all conversions the switched supply to the ballast should be routed via the Lin/Lout pair on the module so
as to detect the operational state of the lamp and for HF ballasts always prevent the ballast shutting down if the
unswitched supply only has failed.
b)
For other circuits not shown please consult the Technical Department.
The LED indicator should be positioned for immediate visual identification without removal of diffuser or louvre.
a)
The LED wiring will have negligible effect on the EMC compatibility.
b)
Physically position the LED nearest the Emergency Lighting lamp to indicate function.
Only once the Unswitched 240V supply is permanently assured, connect the batteries.
a)
Once the batteries are connected ensure the unswitched mains power is not being turned off for
routine testing. These units self test themselves. If the power is switched off often, the batteries will not be
charged correctly to give the required duration, and lamp degradation will occur.
b)
Ensure that the lamp is fitted.
c)
Sign and Date the commissioning label to show when battery was installed.
Where practical use new wiring for all interconnection, and avoid connectors to existing wiring.
On completion of the conversion check all connections and wiring, ensuring Earth Continuity, and conductor integrity.
Do not use High Voltage Insulation Test Equipment.
The unswitched 240V supply to the luminaire should be clearly identified.
With the supplies and batteries connected, check the LED indicator illuminates, and the lamp(s) illuminate at full
brightness, and with the unswitched supply failed, check that the lamp illuminates at reduced brightness. Please allow
24 hours charging before full operation/duration is achieved.
Installation Instructions for Vigilant (VIG) Module Range
Introduction
The Lite-Plan Vigilant (VIG) range of self test emergency lighting conversion kits automatically conduct regular operational and
monitoring tests to establish the condition of the battery, charger and lamp. They are all equipped with a high quality mains
control circuit, inverter circuit, 4 pole changeover relay and 1 pole additional relay which enables incorporation of the modules
with all Electronic (HF) Ballasts and Switch-Start Control Gear and 4 pin fluorescent lamps to provide Maintained Emergency
Lighting. The 4 pole relay enables the emergency lamp to be run from the mains gear by providing a straight through connection
at the eight way module terminal block when the unswitched supply is healthy. The 1 pole relay with time delay prevents HF
ballasts from ‘shutting down’ by breaking the switched supply to the ballast. The lamp cathodes are connected with one to
terminals 1&2, and the other to terminals 3&4. The mains ballast connections are made to terminals 5-8, (see typical wiring
diagrams for details). Under mains healthy input terminal 8 links to 1, 7 to 2, 6 to 3 and 5 to 4, and then upon unswitched mains
failure the inverter circuit powers the lamp from the battery.
The VIG conversion kits are fitted with a microprocessor self test circuit which performs an installation commissioning test,
monthly functional tests, six monthly 1 hour duration tests and the annual full three hour duration tests in accordance with BS
5266. A ground reference lead (black) should be connected from the battery negative to the module case to provide
screening for this microprocessor.
A bi-colour LED is fitted to indicate battery charge healthy and test status together with any fault indication when appropriate.
Indications are:
Mode
Mains On - No Faults
Mains On - Battery Fault
Mains On - Lamp Fault
Mains On - Battery and Lamp Faults
Mains Failure - Battery OK*
Self Test Mode
* If Mains is present and the indicator is off, then the battery charge has failed
After a fault is identified the buzzer will sound intermittently after the test and than at hourly intervals until the fault is rectified.
Installation
When connecting supplies to a maintained emergency light fitting, it is necessary to have an unswitched (battery charging)
supply and a switched (lighting) supply. They can use a common neutral.
Upon first installation the battery should be left disconnected until the 240V unswitched supply is fully assured, and
any circuit testing has been carried out. When powered up the unit will indicate battery fault with the battery disconnected,
but will function normally on mains operation. Please ensure that the microprocessor screening link lead from the inverter battery
negative terminal is connected to the inverter case.
Once the unswitched supply is permanently assured then connecting the batteries will cause the microprocessor to reset, and
initiate its test cycle.
The first 3 hour test will be conducted 48 hours after reset, checking battery capacity, inverter and lamp. A test will only be
conducted if the previous 24 hours were free of a mains failure. If a mains failure occurs during a test, the test will continue
uninterrupted. If the mains supply has not been restored at the end of the test, then the lamp will remain illuminated. The timer
clock has an accuracy of less than 1 minute per month. Tests are delayed until the lights are manually switched off (i.e.: outside
normal working hours). This feature ensures that normal illumination levels are not affected by the self testing procedures. If
the lights are on permanently, then tests are delayed for 24 hours
When modifying a conventionally ballasted mains luminaire to accept an emergency conversion it will usually be necessary to
rearrange the wiring and component layout of the fitting to obtain the best thermal performance whilst still paying due attention to
the electromagnetic, and safety criteria.
Although the mains supply to the conventional ballast is at a low frequency (LF), typically 50 Hz, and the output leads from the
ballast to the lamp are also at a low frequency, the inverter output leads [terminals 1-4] run at high frequency (HF) when the
module is in an emergency situation. The wires and looms carrying the LF connections should be kept away from the HF ones
to improve the EMC. Fit the inverter module and battery in an accessible position within the luminaire, ensuring that they are as
far away as possible from the high temperature control gear (i.e. ballast etc.). If necessary reposition the ballast to keep the
battery and module as cool as possible. Layout the converted fitting with the Batteries furthest from the ballast, and if possible
position the module between the ballast and batteries. Follow wiring instructions as from 1 above.
Monthly Test:
Duration 2 minutes
Six Monthly Test: Duration 1 hour
Annul Test:
Duration 3 hours
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Tel +44 (0) 1708 372 223
Issue 1111
Buzzer
Off
Beep every Hour
Beep every Hour
Beep every Hour
Off
Off
Test Programme
Conversion wiring for fittings with Conventional ballast
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L.E.D. Indicator
Green (Permanently On)
Red (Flash once every three seconds)
Red (Flash twice every three seconds)
Red (Flash 3 times every three seconds)
Off
Green (Flash every ten seconds)
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Page 2
Functions tested - battery, invertor and lamp
Functions tested - battery capacity, invertor and lamp
Functions tested - battery capacity, invertor and lamp
(NB: Annual test discharges the battery, thereby removing ‘memory’ effects and increasing service life)
System Reset
If the unit indicates a lamp fault then the lamp will need replacement. If the unit indicates a battery fault then the battery should
be replaced. Replacing the battery will automatically reset the microprocessor, and reinitialise the test cycle. Alternatively a
fault indication can be removed by resetting the inverter by switching the (switched supply) mains on and off twice within 10
seconds.
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