WarmlyYours Qtran Transformer Installation guide

Brand: WarmlyYours

Model: Qtran Transformer

Category: Dimmers

Type: Installation guide

INSTALLATION Q6S/Q6M

Mounting Options

MOUNT unit in any of the following configurations:

Do not recess. If you need a recessed unit, you need to order our QT series.

VOLTAGE DROP

• To minimize voltage drop the proper gauge wire must be pulled between

the Q-Tran power supply and the load.

• Q-Tran offers a free voltage drop calculator on our website

(www.q-tran.com) or you can download our free voltage drop app for

iPhone, iPad or android devices (click link on our site).

• Below is a quick reference chart of minimum acceptable wire gauges.

(Q-Tran urges each installer to view our full calculator.)

BEFORE INSTALLING DOOR

Please make sure the output voltage at the lamps is between 11.4–12 volts

for a 12V system or 22.8–24 volts for a 24V system. Check this voltage with

a true RMS volt meter & take voltage reading at the lamps.

CONNECT SECONDARY

(For detailed look at secondary, see Diagram B)

Connect low voltage fixtures in one of the following methods:

CONNECT PRIMARY

(For detailed look of primary, see Diagram A)

NOTE: Voltages are fixed and can only be changed at the

factory. Voltages come in 120V, 230V or 277V.

Rod Suspension

Surface Wall

Surface Ceiling

Surface Floor

NOTE: Rods not included.

120V input

Switch

120V input

Dimmer

114V output

120V output

NEU

GND

HOT

GND

NEU

12V

NEU

GND

11V

12V

13V

11V

12V

13V

GND

NEU

{

HOT

{

GND

24V

26V

TAP 1

TAP 2

13V

Secondary

Circuit Breaker

2.5A

4 A

5 A

14 AWG

60W

120W

60W

100W

120W

L.V.

Gauge

Max Load

12V

Max Load

24V

Secondary Breaker Amperage

* L.V. = wiring per NEC - wire must be sized to be equal to or greater than shown.

#14 12V

#14 TYP.

#14

#12

#10 #10 #10 #10

#14

#12

#14

25A #10

100W

12V

12V 12V

A. B.

C. D.

24V

Equal Gauge - Equal Length

Vary Wire Gauge to Keep Voltage Equal

200W

Transformer

15’

35’

15’

Diagram A. Diagram B.

Diagram C. Diagram D.

DO NOT USE THIS METHOD TO WIRE YOUR LOW-VOLTAGE FIXTURES!

INSTALLATION Q6S/Q6M

Rough In Wiring

Example:

25A max per NEC 411: use #10 AWG min

For 20A, use #12 AWG min

For 15A use #14 AWG min

Please note amperage may increase with higher taps.

L.V. = Class 1 wiring per NEC - wire must be sized to be

equal to or greater than shown.

When the voltage goes down by a factor of 10 (120V to 12V) the

amperage goes up by a factor of 10 (2.5A to 25A)

Primary Secondary

Secondary

Circuit Breaker

10A

15A

20A

25A

L.V.

Gauge

14 AWG

12 AWG

10 AWG

Max Load

12V

60W

120W

180W

240W

300W

Max Load

24V

120W

240W

360W

480W

600W

12V

25A

120V

2.5A

Transformer

300VA #10 AWG min

= 2.5A = 25A

300VA

120V

300VA

12V

OFF

NOTE: Switch or dimmer are always on the primary

15A circuit breaker

use #14 AWG minimum

20A circuit breaker

use #12 AWG minimum

The neutral must be clean.

Run a “virgin” neutral for each PSC.

Low Voltage Runs = High Amps Secondary Breaker Amperage

Keep Runs Short! Get The Tap Right!

Get The Wire Gauge Right

Both primary and secondary wiring to be Class 1 per

NEC unless Class 2 option is ordered

Download our Voltage Drop Calculator at:

www.Q-Tran.com

120V Primary 12V Secondary2.5A Primary

114V when dimmer

is @ full bright 25A max

per L.V. load

300VA 300VA

120V switch

INSTALLATION Q6S/Q6M

Rough In Wiring

Equalizing Voltage Drop

When installing multiple fixtures or loads from a single remote PSC,

it is important to have approimately the same voltage at each lamp.

Many installations require different length runs to the loads which

may require different wire gauges to equalize the voltage. It is

important to have approximately the same voltage at each lamp so

the light output appears to be the same. Use Q-Tran’s Voltage Drop

Calculator to easily determine the correct wire gauge.

3 Key Points you must know:

1 - The voltage of the lamp specified

2 - The amperage rating of the product

3 - The maximum wire gauge that can be terminated at the load. A

number 6 or 8 gauge wire, for instance, can not be terminated on

most L.V. products.

Diagram A - For 12V track, rail, or cable system that is rated for

25A requires a minimum of #10 gauge wire. Runs should be

approximately the same length.

Diagram B - For LV cove lighting, the VDC might show you to vary

the wire gauge to equalize the voltage at the lamp. Running the

same gauge wire to all runs may be wrong.

Diagram C - For recessed or mono point fixtures powered from a

single PSC, it is a recommended that all secondary runs be the

same length and the same gauge; EQUAL LENGTH - EQUAL

GAUGE. All surplus wire must not be coiled but made into a long

loop.

Diagram D - For commerical installations requiring conduit, this

diagram shows an alternate wiring method. Also applicable to

residential installations.

Diagram A.

Equal Gauge - Equal Length

Vary Wire Gauge to Keep Voltage Equal

Equal Gauge - Equal Length

Vary Wire Gauge to Keep Voltage Equal

Diagram B.

Diagram C.

Must go back to the PSC as shown in example C or D.

DO NOT USE THIS METHOD!

Diagram D.

INSTALLATION Q6S/Q6M

Connecting and Configuring

PRIMARY (Input Wires)

SECONDARY (Output Wires)

CHOKE

Standard on all units

TRANSFORMER

Small – 50W - 300W

DIVIDER

Input voltage is fixed and can only be changed

at the factory. Input voltage is indicated on side

of the housing.

Medium – 500W - 750W

Large – 900W - 1800W

Secondary Circuit Breakers

Secondary Common

DO NOT EXCEED TOTAL AMPS OF SECONDARY

CIRCUIT BREAKERS

Output voltage is wired as ordered (12V or 24V)

but can be changed by a licensed electrician.

CHOKE

GREEN

GND

NEU

HOT

GND

NEU

HOT

GND

WHITE

TAP1 (120V)

BLACK

ORANGE

(277V)

WHITE BROWN

BLUE

YELLOW

VIOLET

Bkr(s).

PRIMARY

VOLTAGE

12V

WIRING DIAGRAM

24V

WIRING DIAGRAM

SECONDARY

12 VAC

Ɣ USE WIRE NUTS OR TERMINAL BLOCKS FOR LOAD CONNECTIONS

Ɣ DASHED LINES INDICATE ELECTRICAL CONTRACTOR WIRING

TAP2

(120V)

GREY

RED

(277V)

CHOKE

GREEN

GND

WHITE

TAP1 (120V)

BLACK

ORANGE

(277V)

WHITE BROWN

BLUE

YELLOW

VIOLET

Bkr(s).

PRIMARY

VOLTAGE SECONDARY

24 VAC

Ɣ USE WIRE NUTS OR TERMINAL BLOCKS FOR LOAD CONNECTIONS

Ɣ DASHED LINES INDICATE ELECTRICAL CONTRACTOR WIRING

TAP2

(120V)

GREY

RED

(277V)

4.50"

Q6 WIRING DIAGRAM

3.50"

If a transformer is wired from the factory for 12V,

for 24V secondary wiring: Disconnect the blue and

yellow wires from terminal blocks and connect

together with wire nut. The brown wire now

becomes the common side of the load, and the

violet wire should be connected to the secondary

circuit breaker, which is the line side of the load.

Please refer to the wiring diagrams on this page.

12 24

If a transformer is wired from the factory for

24V, for 12V secondary wiring: Disconnect the

blue and yellow wires from terminal block.

Connect yellow and brown wire into terminal

block, which becomes the common side of the

load. Connect blue and violet wires into

terminal block, which should be connected to

the secondary circuit breaker(s) which

becomes the line side of the load Please refer

to the wiring diagrams on this page.

24 12

Auto reset thermal circuit breaker mounted to core of toroid Hydraulic magnetic manual reset circuit breakers

Terminal block connection

Polarity

Choke or inductor on primary

to reduce inrush current.

INSTALLATION Q6S/Q6M

Troubleshooting and Warnings

Risk of Fire / Electric Shock

Transformer should be installed by a

Licensed electrician in accordance with

the N.E.C. and all local codes in force.

Wear rubber shoes and work on a sturdy wooden or ﬁberglass ladder.

This power supply must be installed according to the National Electric

Code and local codes and ordinances.

This power supply is to be installed and serviced only by an licensed

electricians.

This power supply is to be installed so that it is not likely to be contacted

by people.

To avoid a hazard to children, account for all parts and destroy all

packaging materials.

This power supply is to be installed and serviced only by an licensed

electrician.

Do not install in wet locations.

1Panel Adjustments 2Dimmer or Switch

Adjustments

3Transformer

Adjustments

4Load

Adjustments

Dimmer

Lighting

Panel

Q-Tran (PSC)

Power Supply Center Load

SecondaryPrimary Primary

Primary

circuit breaker

Secondary

circuit breaker

Switch

Circle oneWire gauge Wire gauge

Impedance is important and used to calculate the maximum short circuit current which is need for sizing, circuit breakers and fuses.

Lower values of impedance will provide a reduction in regulation for a given load. The regulation is the ration of output voltage at a speciﬁed load,

compared to the output voltage at no load.

Q-TRAN’S TRANSFORMERS HAVE IMPEDANCE IN THE RANGE OF 2 % - 5 %

Impedance is expressed as a percent. This percentage represents the amount of normal rated primary voltage which must be applied

to the Transformer to produce full rated load current when the secondary windings is short circuited.

The Impedance of most ordinary transformers runs between 3% and 6%.

The maximum short circuited current is limited by the impedance of the transformer

If the load impedance is too low this will increase the current in the transformer windings. This also reduces the primary impedance that the output sees which increases tube current ﬂow.

If the load impedance is too high, this reﬂects a higher than normal impedance in the primary for the output.

If the transformer has 5 % (.05) impedance, the reciprocal of .05 is 20 and maximum short circuit current is 20 times the full load current.

If the transformer has 10 % (.1) impedance. The reciprocal of .1 is 10 therefore the maximum short circuit current is 10 times the full load current.

Wire gauge

Model number

Watts per run

Total watts

Wire length

Primary feed circuit breaker

Manufacturer:

Model number:

Amperage:

Note: To properly assist you with any trouble shooting support, please ﬁll out your information on the lines provided.