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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.
| TW-50 |
50 VA Transformer |
(40w max.) |
| TW-100 |
100 VA Transformer |
(80w max.) |
| TW-150 |
150 VA Transformer |
(120w max.) |
| TW-250 |
250 VA Transformer |
(200w max.) |
| TW-500 |
500 VA Transformer |
(400w max.) |
| TW-750 |
750 VA Transformer |
(600w max.) |
| TW-1000 |
1000 VA Transformer |
(800w max.) |
| TW-1500 |
1500 VA Transformer |
(1200w max.) |
| TW-2000 |
2000 VA Transformer |
(1600w max.) |
| TW-3000 |
3000 VA Transformer |
(2400w max.) |
Class II Transformers
UL Recognized Class II transformers with 120 volt primary,
secondary voltage as indicated.
| TW-52X |
50 VA |
12v Transformer (non-enclosed) |
| TW-52B |
50 VA |
12v Transformer (enclosed) |
| TW-54X |
50 VA |
24v Transformer (non-enclosed) |
| TW-54B |
50 VA |
24v Transformer (enclosed) |
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.
| TE-32 |
300 VA |
12v Transformer |
| TE-34 |
300 VA |
24v Transformer |
Fuses and Holders
All low voltage circuits must be protected with in-line
fuses properly sized to the load.
| ILH30 |
In-line fuse holder, 30 amp
capacity |
| FP5 |
5 amp fuse |
FP20 |
20 amp fuse |
| FP10 |
10 amp fuse |
FP25 |
25 amp fuse |
| FP15 |
15 amp fuse |
FP30 |
30 amp fuse |
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.
| BB622 |
Breaker box with 2 circuit breakers (12v) |
| BB632 |
Breaker box with 3 circuit breakers (12v) |
| BB842 |
Breaker box with 4 circuit breakers (12v) |
| BB862 |
Breaker box with 6 circuit breakers (12v) |
| BB882 |
Breaker box with 8 circuit breakers (12v) |
Lenses and Louvers
Lenses and louvers can provide additional lighting control
and provide effects.
These accessories may be used with most downlights.
| MR-11 |
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MR-16 |
| LSCL |
Clear lens |
LLCL |
| LSFR |
Frosted lens |
LLFR |
| LSUV |
Anti-UV lens |
LLUV |
| LSHS |
Heavy Spread lens |
LLHS |
| LSLS |
Linear Spread lens |
LLLS |
| LSDF |
Diffusing lens |
LLDF |
| LSBL |
Blue lens |
LLBL |
| LLRD |
Rend lens |
LLRD |
| LSGR |
Green lens |
LLGR |
| LSYL |
yellow lens |
LLYL |
| LS45 |
45° black louver |
LL45 |
| WARNING All circuits must be properly protected by in-line fuses, circuit
breakers, or thermal devices which are correctly sized to the load. It is strongly
recommended that circuit layout and power requirements be determined by professionals and
that installation be made only by qualified electricians. Halogen light sources generate
heat which must be considered in selecting and designing installation area. Allowances
should be made for sufficient heat dissipation to avoid possible damage to surrounding
materials due to heat. |
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