Aurora A2-D60 Dimmable Electronic Transformer Instruction Manual
- June 17, 2024
- Aurora
Table of Contents
Aurora A2-D60 Dimmable Electronic Transformer
Product Information
Specifications
- Model: A2-D60/H60
- Wattage/VA: 60W/VA
- Pri. Current: 0.26A
- Sec. Voltage: 11.4 VAC
- Max Ambient Temp (ta): Not specified
- Max. Case Temp (tc): Not specified
Features
The Dimmable Electronic Transformer A2-D60/H60 has the following features:
- Dimmable functionality
- Suppressed to all relevant EMC standards
Installation Instructions
Please follow these instructions carefully for the installation of the
Dimmable Electronic Transformer A2-D60/H60:
-
Step 1: Switch Off the Electricity
Before commencing installation or maintenance, ensure electricity is switched off at the mains. -
Step 2: Insulation Resistance Testing
According to IEE Wiring Regulation 713-04-02, all current equipment (including electronic transformers) must be disconnected when conducting an insulation resistance test. This is because electronic transformers can cause incorrect measurements and be irreparably damaged by insulation resistance testing. -
Step 3: Limit Secondary Lead Length
The secondary (output) leads must not exceed 2m in length. -
Step 4: Connect Mains Supply
The main supply should be connected to the Primary Input cables via a suitably enclosed junction box. Ensure the wiring is correct and matches the rating of the transformer. Replace failed lamps immediately. -
Step 5: Power On
Once all the connections have been made and the transformer is in position, turn on the power supply.
Frequently Asked Questions (FAQ)
-
Can I use a standard multimeter to measure the output voltage?
No, the output voltage cannot be measured with a standard multimeter. To measure the output voltage (11.4V a.c.), use a true r.m.s. A.C. voltmeter with a bandwidth greater than 30Khz. -
What should I do if I experience interference on radio bands?
If interference is experienced on the medium and long-wave radio bands, please note that these transformers are suppressed to all relevant EMC standards. If the interference persists, consult a professional for further assistance.
© Aurora Limited. All rights reserved. DIMMABLE ELECTRONIC TRANSFORMER
A2-D60/H60 60W/VAPLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE THE
INSTALLATION
LEAVE A COPY FOR THE USER / MAINTENANCE ENGINEER FOR FUTURE REFERENCE
FEATURES
- Fully dimmable with resistive and inductive dimmers
IMPORTANT INSTALLATION INFORMATION
- Installation should be carried out by the latest edition of the I.E.E. Wiring Regulations (BS7671). If in doubt, consult a qualified electrician.
- For use with 12V tungsten halogen lamps in Class III low voltage luminaries.
- Rated input Voltage – 240VAC +/- 10%. 50/60Hz
- Before commencing installation or maintenance, ensure electricity is switched off at the mains.
- Ensure that ALL electrical connections are tight with no loose strands, including factory-made connections.
- The output cables should be connected to the terminals of the luminaire. Polarity is not important.
- No part of the secondary (SELV) circuit should be earthed.
- 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)
- 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 transformer may be fitted in the same circuit as inductive loads as it has 1.0Kv Surge protection per EN61547
- Ensure that the wattage of the lamps does not exceed the rating of the transformer.
IMPORTANT USER INFORMATION
- Always switch off the mains supply before servicing, fitting or changing any lamps.
- Replace failed lamps immediately. Allow the lamp and fitting to cool before replacing the lamp.
INSTALLATION INSTRUCTIONS
-
Before commencing installation or maintenance, ensure electricity is switched off at the mains.
IEE Wiring Regulation 713-04-02 states that ‘all current using equipment (this includes electronic transformers) must be disconnected when conducting an insulation resistance test’. This is because electronic transformers can cause incorrect measurements and be irreparably damaged by insulation resistance testing. -
The secondary (output) leads must not exceed 2m in length.
-
The mains supply should be connected to the Primary Input cables via a suitably enclosed junction box as follows:
- Brown/Red – Live (terminal marked L)
- Blue/Black – Neutral (terminal marked N)
-
Connect the low-voltage lamp to the secondary side of the transformer, ensuring that the wattage of the lamps does not exceed the rating of the transformer. Replace failed lamps immediately.
-
Once all the connections have been made and the transformer in position, turn on the power supply.
GENERAL
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 (See Fig. 4 below). A slight buzzing noise is normal with some types of dimmer switches. 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 A2-D60 transformer requires a minimum load of 20 watts for normal operation. For dimming applications, a minimum load of 35 watts is required.
- The A2-H60 transformer requires a minimum load of 20 watts for normal operation. For dimming applications, a minimum load of 35 watts is required.
RADIO INTERFERENCE
- In common with other high-frequency converters, 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.
FAULT FINDING
- Electronic transformers give little or no output unless connected to a load of the correct rating. To measure the output voltage (11.4V a.c.) use a true r.m.s. A.C. voltmeter with a bandwidth >30Khz. The output cannot be measured with a standard multi-meter.
TECHNICAL DATA
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 in the UK for 3 years from the date of purchase.
The guarantee is invalid in the case of improper use, installation, tampering,
removal of the Q.C. date label, installation in an improper working
environment, or installation not according to the current edition of the
I.E.E. Wiring Regulations (BS7671). 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. Aurora does not accept
responsibility for any installation costs associated with the replacement of
this product. Your statutory rights are not affected. Aurora reserves the
right to alter specifications without prior notice. Aurora Limited 16 Alban
Park Hatfield Road St Albans Hertfordshire AL4 0JJ United Kingdom Website:
www.aurora.eu.com
Document version – A2-D60,H60 Transformers_V1_09.doc