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INSTALLATION

         

Q6S/Q6M

© 2020 Q-Tran Inc. All rights reserved | 155 Hill St. Milford, CT 06460 | 203-367-8777 | [email protected] | www.q-tran.com 

Specification subject to change. Rev-09-29-20

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.

1

Panel Adjustments

2

Dimmer or Switch 

Adjustments

3

Transformer 

Adjustments

4

Load 

Adjustments

 Dimmer

Lighting 

Panel

Q-Tran (PSC) 

Power Supply Center

Load

Secondary

Primary

Primary

Primary 
circuit breaker

Secondary 
circuit breaker

Switch

Circle one

Wire 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.

Manufacturer:

Model number:

*

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

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.

1

Panel Adjustments

2

Dimmer or Switch 

Adjustments

3

Transformer 

Adjustments

4

Load 

Adjustments

 Dimmer

Lighting 

Panel

Q-Tran (PSC) 

Power Supply Center

Load

Secondary

Primary

Primary

Primary 
circuit breaker

Secondary 
circuit breaker

Switch

Circle one

Wire 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.

Manufacturer:

Model number:

*

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

Summary of Contents for Q6S

Page 1: ...Prim V Sec V No Brk Amp2 Choke Color3 50DT 100DT 150DT 300DT 120 60Hz 277 60Hz 12V 24V 1 2 3 5 10 12 5 15 20 25 WH Standard BK 2 Secondary Breaker Amperage Amps Max 12V Load Max 24V Load 5 60W 120W 10 120W 240W 12 5 150W 300W 15 180W 360W 20 240W 480W 25 300W 600W 3 Color WH White Standard BK Black Powder Coat Finish Choke CK S 150W 300W Choke not required from 50W 100W 1 2 3 4 5 6 WALL CEILING FL...

Page 2: ...e connected to one 1 of the primary taps up to the full watt rating of the PSC 20 derating required The advantage is that the PSC can be tapped to recover voltage drop and produce between 85 100 light output NOTE See Voltage Drop Calculator at www q tran com Secondary Circuit Up to three 3 magnetic circuit breaker Amps 5A 10A 12 5A 15A 20A 25A NOTE Breakers are sized to the feed load per N E C Art...

Page 3: ...age 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 1 3 5 4 2 Rod Suspension Surface Wall Surface Ceiling Surface Floor NOTE Rods not included 120...

Page 4: ... AWG 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 ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON 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 ...

Page 5: ...d 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 D...

Page 6: ...OWN BLUE YELLOW VIOLET Tp Bkr s PRIMARY VOLTAGE SECONDARY 24 VAC Ɣ USE WIRE NUTS OR TERMINAL BLOCKS FOR LOAD CONNECTIONS Ɣ DASHED LINES INDICATE ELECTRICAL CONTRACTOR WIRING L O A D L O A D OR 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 ...

Page 7: ...our information on the lines provided Manufacturer Model number ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF 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 fib...

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