# NEW 600W L.V.TRANSFORMER DOES NOT PRODUCE ENOUGH POWER

I HAD AN OLD 600W LOW VOLTAGE TRANSFORMER WHICH STOPPED WORKING AND WAS MADE BY H.B. REPLACED WITH A NEW ONE MADE BY H.B. I EXPECTED THAT IT SHOULD GIVE ME THE SAME POWER OUT BUT IT DOES NOT. IT SEEMS MY ELECTRICIAN DOES NOT KNOW WHAT THE PROBLEM IS. PLEASE ADVISE WHAT YOU THINK THE PROBLEM MIGHT BE. THERE HAS BEEN NO CHANGES IN THE NUMBER OF LIGHTS OR THE WATTAGE OF MY SYSTEM

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This is more than likely what has happened . I am going to guess that your original low voltage trasformer was a 120 volt .6KW. Or 600watt transformer that has one lead from it to the lights . The newer less expensive transformer is also 600 watts , but the new one may have 2 sets of wire terminals on the back( 4 screws ). If this is the case , you have a transformer that is 600 watts output but it has 2 seperate 300 watt outputs that won't run 600 watts from 1 set of output screws . You will have to seperate the lighting load and may have to run an additional low voltage wire to half of your lights . In other words . Put 300 watts of light on 1 set of 12volt output screws and 300 watts on the other se of output screws .that will solve your issue . Good luck and enjoy your lights again . John

Posted on Sep 27, 2012

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There are many things that could be causing this problem, so you will need to check the system over methodically.

1. Check that there is mains power of the correct voltage at the input side of the new transformer. If you do not have any power here you have a fuse/breaker out or supply cable fault. If the power input is o.k then;

2. Check what power if any is coming from the output side of the new transformer . If you have no power output the new transformer is faulty. If power output is ok the fault lies with the onward cabling or switching to the lamps.

If it is only a question of transformer power output refer to H.B as you can have different power ratings at the same voltage. ie 600 volts at 1000 VA or 3000 VA ,you need to make sure you have sufficient output current for the total of your lamps.

I hope this is of some help.

Posted on Dec 01, 2008

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Posted on Jan 02, 2017

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If you are talking about low voltage light transformers, then answer is probably NO... but you could try it and see if it works... but I am almost certain that both transformers will probably burn out.
Output is 12 Volt AC... the transformer coils will probably burn out because the waveform from each transformer cannot be guaranteed to be the same.... even if both transformers are seemingly identical and plugged into same outlet.

http://waterheatertimer.org/Malibu-power-pack-stopped-working.html#install

Power company transformers can be wired together in specific ways to produce 3-phase waveform, but these transformers are specifically engineered for the task. And the transformers do not combine the output (as you would be doing with yard transformer), instead each power company transformer produces 1 leg of power in a 3-leg power supply.
http://waterheatertimer.org/What-is-3-phase-electric.html#transformer

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Yes and worse, it can short out the inverter with both a low voltage hi frequency current which can cause the inverter to catch fire or a hi voltage low frequency current which will have the same effect.

STOP USING THE TRANSFORMER

It is a FIRE HAZARD when used with an inverter. Buy a new one.

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### Malibu transformer

Unplug transformer, change bulbs with low voltage bulbs from local hardware or home center. There are two screws on back of each bulb.
Copy following link for tips to get power pack to last longer, replacement trippers, warranty, troubleshoot. etc
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html
Reason for unplugging transformer: because product manual lists that as best way to change bulbs. The low voltage transformer output is 12Volts and does not carry enough power to cause you harm if you touch bare wire.
Add a comment and attach photo as needed.

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Voltage drop because transformer is not putting out enough power as when it was new.
Or Short along the wire somewhere.
Connect new wire and 1 bulb, but do not connect to existing wire.
http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

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### I bought a Malibu 300W low voltage landscape transformer to replace a 200W unit that stopped working. It worked for 1 week, then stopped .. the reset **** doen't work. The LED works, I do see a...

I don't know if it burned out, but something is not right.
Malibu products come with 1-5 year warranty.
New product that stopped working should be exchanged for full replacement at place of purchase, except possibly the auction sites.
New Malibu product should work for many years.
Be sure to match bulb voltage with transformer voltage to avoid possible problems.
Mismatched bulb and transformer wattage should not affect a timer in short period such as 1 week.
Another thing to check is outlet polarity. Use circuit analyzer from home center to check outlet.
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### My mosquito bat is not working.its red light is on producing little spark.it is charging what may be the problem .

It can be due to low voltage on the battery, if so check the voltage or replace.
Also if the high voltage is low to kill the mosquito then it can be due to poor invertor action, the drive or the HT transformer.
Rather than replacing the transformer a new bat will be cheaper unless you can source the spares.

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I don't know of a timer that matches.
Include as much information as possible.
Is this low voltage? What brand, etc? What does timer control?

Intermatic makes low voltage, so does Kitchler.
I don't know much about Kitchler brand.
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Your issue is that the dimmer is not rated to handle the type of fixture/lamps its controlling.

From a lighting control standpoint, the 12V-lamps classify as "low-voltage halogen" and, somewhere in that circuit, have a transformer(s) converting the 120V~ down to 12V~. Using incandescent dimmers (like the one you are using) can cause compatibility issues with those transformers. What I suspect is happening is that the incompatibily is either throwing voltage spikes or current spikes on the line which are causing the dimmer to enter some sort of "safety" mode to shut everything down before any problems occur.

My recommendation is to first figure out what type of transformer it is: Either magnetic low-voltage, or electronic low-voltage. Ideally you would contact the transformer manufacturer (or look up their specs online) to figure that out. Other rules of thumb: if the transformer's big & bulky, it's probably magnetic - conversely if its lightweight, it's probably electronic. If its only one transformer controlling all of the lamps together, it's probably magnetic - conversely if its one of those transformers where the transformer and light bulb come togheter as one assembled unit and then snap into the track, it's probably electronic.

Then make sure the dimmer is rated for magnetic low-voltage, or electronic low-voltage (depending upon what the transformer is).

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Use "A" and "B" terminals. The "C" terminal is a "dummy" terminal - it isn't connected to anything inside the transformer. It is used as a splice point in the event you decide to connect a photo cell (dawn to dusk) controller.

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