Dimmable Electronic Transformer
60/105/150/210W/300W/VA
INTERNATIONAL LIGHTING CORPORATION
Dimmable with Resistive
and Inductive Dimmers
Important Note to the Installer
These instructions contain important information. Please ensure that a copy is left with the user/maintenance engineer.
Warning
This product should be installed by a competent electrician in accordance with these instructions and the latest edition of the
I.E.E. W iring Regulations (BS 7671) and other relevant regulations (e.g Building, Fire etc).
For use with 12V tungsten halogen lamps in Class III low voltage luminaires only.
Isolate from the mains supply before installation or maintenance.
Installation Instructions
The transformers feature loop-in, loop-out primary wiring terminals and an Integrated Earth Terminal to allow Earth continuity
to be maintained in the primary wiring circuit.
The mains supply should be connected to the Primary Input terminals as follows:
Black/Blue - Neutral (terminals marked N)
Red/Brown - Live (terminals marked L)
Green/Yellow - Earth (terminal marked ) No part of the secondary (SELV) circuit should be earthed.
Input Terminals
Dual Live & Neutral terminals allow loop-in, loop-out wiring between transformers.
Integrated Earth Terminal allows Earth continuity in the primary wiring circuit.
Output Terminals
Max. 105W/VA per pair of terminals (up to transformer max load)
Ensure that the cable current rating is sufficient.
The terminal connections are marked on the transformer.
The transformer should be sited in a well ventilated position. Do not enclose or cover the transformer with thermal insulating
materials. The ambient temperature during operation must not exceed the ta 0C rating of the transformer.
Keep the transformer away from direct sources of heat such as low voltage lamps (see Figure 1 below).
The transformer may be fitted in the same circuit as inductive loads as it has 1.0KV Surge protection in accordance with
EN61547
Do not fit the transformer above the luminaire (see Figure 2 below).
Do not allow the input and output wiring to cross (see Figure 3 below).
The secondary (output) leads must not exceed 2m in length.
Ensure that the wattage of the lamps does not exceed the rating of the transformer.
Replace failed lamps immediately.
(Figure.1 - CORRECT Installation) (Figure.2 - INCORRECT Installation)
KEEP WELL APART
(Figure.3)
DO NOT CROSS INPUT AND OUTPUT WIRING
12V~
L
N
Transformer
Dimming
This transformer may be dimmed with most types of standard resistive and inductive dimmer switches.
Install the dimmer switch on the primary (mains) side of the transformer.
A slight buzzing noise is normal with some types of dimmer switch. An increase in transformer noise may be experienced
when dimmed.
The dimmer should be loaded to at least 75% of its maximum capacity (refer to the dimmer manufacturers’ instructions).
• The 60VA transformer requires a minimum load of 20-Watts for normal operation.
• For dimming applications a minimum load of 35-Watts is ired.
• The 105VA transformer requires a minimum load of 35-Watts for normal operation.
• For dimming applications a minimum load of 50-Watts is required.
• The 150VA transformer requires a minimum load of 50-Watts for normal operation.
• For dimming applications a minimum load of 75-Watts is required.
• The 210VA transformer requires a minimum load of 50-Watts for normal operation.
• For dimming applications a minimum load of 100-Watts is required.
• The 300VA transformer requires a minimum load of 50-Watts for normal operation.
• For dimming applications a minimum load of 100-Watts is required.
12V~ Transformer N
ADDITIONAL DIMMER
TRANSFORMERS SWITCH
INSTALLATION WITH DIMMER SWITCH
Radio Interference
In common with other high frequency convertors this product may cause radio interference.
Under certain circumstances interference may be experienced on the medium and long wave radio bands. Please note that
these transformers are suppressed to all relevant EMC standards.
Thermal Protection
The AU-E105, AU-150 & AU-210 transformers feature an auto-reset thermal switch and will shut down in the event of
overheating and re-start when the temperature returns to normal.
When installed, the transformer must have adequate air cooling to prevent overheating. Ensure that there is adequate distance
from the lamp to prevent heat transfer (min. 200mm).
Fault Finding/Testing
Electronic transformers give little or no output unless connected to a load of the correct rating. To measure output voltage use
a true r.m.s. A.C. voltmeter with a bandwidth>30Khz. The output cannot be measured with a standard multi-meter.
IMPORTANT - Do not use a Megger or similar insulation resistance tester on circuits with electronic transformers connected as
permanent damage to the transformers may result. Disconnect the transformers before testing.
TECHNICAL DATA
Model Wattage Pri. Current Sec. Current Ambient Temp. Max. Case Temp.
AU-60T3 20 - 60 0.27A 5A -20 to +50C +75C
AU-E105 35 - 105 0.43A 9A -20 to +45C +75C
AU-150 50 - 150 0.62A 13A -20 to +45C +80C
AU-210 50 - 210 0.87A 18A -20 to +45C +80C
AU-300 50 - 300 1.3A 25A -20 to +45C +75C
Environmental Protection (W.E.E.E.) – Aurora’s WEEE Reg.No. WEE/BG0130YX
Waste Electrical & Electronic Equipment Regulations (WEEE) requires that any of our products showing this
marking (left) must not be disposed of with other household or commercial waste. Aurora does not levy any
WEEE disposal charges to its customers for affected WEEE related products. To prevent possible harm to the
environment or human health from uncontrolled waste disposal, please separate any such product from other
waste types and recycle it responsibly at your local facilities. Check with your Local Authority, Recycling Centre or retailer for
recycling advice. If, when you purchased any Aurora product, your supplier included a WEEE disposal fee, you should then
contact your supplier for advice on his takeback of the product for the correct disposal.
Guarantee
This product is guaranteed for a period of 10 years from purchase. Should this product fail during the guarantee period it will
be replaced free of charge, subject to correct installation and return of the faulty unit. The guarantee is invalid in the case
of improper use or installation, tampering, removal of the Q.C. date label, installation in an improper working environment
or installation not in accordance with the current edition of the I.E.E. Wiring Regulations (BS 7671).Aurora does not accept
responsibility for any installation or site visit costs associated with replacement of this product. Aurora reserve the right to alter
specifications without prior notice.
EN 61347
EN 61547
AU-60T3_E105_150_210_300_V1_10
