Transformers

Transformers convert available 120 or 240 volt primary power supply to 12 or 24 volts for fixture operation. Transformers are required only for use with Remote Transformer Frame-In Housing (types DHR & DLR) or for use with downlight trims used without other housings. When calculating transformer size always derate total transformer capacity by 20%. TW-1000 and smaller are suitable for 50/60 Hz. All transformers are U.L. Listed and CSA Certified. Transformers must be specified with appropriately sized secondary fuses and fuse holders.

Class II Transformers

UL Recognized Class II transformers with 120 volt primary, secondary voltage as indicated.

Eletronic Transformers

Ul Listed features lightweight and compact design with self-resetting short circuit and overload protection. Fully dimmable using standard incandescent dimmers. 120 volt primary, secondary voltage as indicated.

Fuses and Holders

All low voltage circuits must be protected with in-line fuses properly sized to the load.

How to Specify:

Transformers:

Determine the total wattage by adding the wattages  of all lamps in each ciarcuit, specify the transfer accordingly. Where several circuits will be powered by a single transformer, add the combined wattages for all circvuits. Always derate naminal transformer capacity by 20%.

Fuses:

Divide the toal circuite wattage by the operating voltage to determing the amperage; round up to the nearest size fuse.

Example:

To operate 5 DL31 units installed into 5 DHR2 downlight housing with 50 watt MR-16's.

Determine total Wattage: 5 x 50 watts=250 watts

Determine total amperage: 250 watts / 12 volts = 21 amps

The correct transformer is a TW-500, correct fuse and fuse holder is an ILH30 with an FP25.

A TW-250 transformer has a mnaximum capacity of only 200 watts (250) less 20%) so the next larger size, a TW-500, is appropriate.

Breaker Boxes

UL Listed low voltage breaker boxes provide a convenient and easy way to h andle multiple low voltage circuits. Low voltage power is brought from the transformer to the breaker box where wiring can be easily installed to screw down type coantacts. Each ciarcuit is rotected by a resettable circuit breaker. Specify circuit breaker size when ordering.

Lenses and Louvers

Lenses and louvers can provide additional lighting control and provide effects.

These accessories may be used with most downlights.