ITV-15 Isolated AC Power Supply

(2 customer reviews)


Out of stock


Variable Isolation Safety transformer 1500VA


  • High quality toroidal isolation transformer conected in cascade with variac
  • Transformer shield to minimize capacitive coupling between primary and secondary windings
  • Provides galvanic isolation and allow to adjust output voltage (0-260V)
  • Digital LCD voltmeter with blue backlight
  • Digital LCD ammmeter
  • Inrush current protection
  • EMI filter
  • Overcurrent input protection
  • Resetable overcurrent output protection
  • Auto resetable thermal cut out fuse
  • Thermal overload LED indicator
  • Output mode selector switch (floating, disconnected, grounded)
  • UK AC output socket


  • Input voltage: 240 (220) VAC
  • Output voltage: 0-260 VAC
  • Output current: Max. 6A
  • Output power: Max 1500VA

2 reviews for ITV-15 Isolated AC Power Supply

  1. Robert Brown

    Solidly built, and an invaluable piece of kit in our lab. It has been used for equipment repair, running equipment rated at 110V, transformer short-circuit testing, isolating instruments from ground during sensitive measurements, and soft-starting inductive loads. Having the choice of taking the output from the 3 pin socket or the 4mm connectors is very useful.


    I have owned this power supply for several months. This is a solid (=HEAVY!) built unit. I wouldn’t call it “sophisticated”, nore “agricultural” – but probably somewhere in between. This unit offers a VARIABLE AND ISOLATED output up to around 6A. The controls all feel solid, and the internal build (couldn’t resist a peak) is all solid, too. There’s that word “solid” used three (no, four) times. You get the idea. The unit is contained in a fairly heavy gauge steel painted case with two handles (you will need both!).

    The supply emits a low purposeful hum when switched on, which rises a tad under load, but no big problem. There is no fan cooling. In my application, it runs cold (but I haven’t load tested it for any duration).

    The cool-blue backlit voltmeter seems pretty-well spot on, though it takes a couple of seconds to settle. The ammeter, in contrast, can be a bit off, especially when driving awkward loads such as switch mode loads. The load current is then anything-but sinusoidal (that doesn’t bother the power supply itself that much), but this is a hard load to measure the true current and the built-in ammeter reflects this. Big deal? Not really. Use an external true RMS meter if you really need it.

    The front panel includes over-temperature, a resetable output (or it may be on the input, not sure) trip fuse and a standard thermal fuse. I’ve never had cause to exercise any of these. Also on the front panel is a UK13 A main output socket. This, sadly, looks to be a bit budget, as it excludes the standard shutters over the live and neutral pins. Still, if you own or are operating a piece of gear like this, hopefully you already know better than to stick things (other than 13A plugs) into the sockets, anyway! There is also a rear socket, which is slightly more terrifying, permitting as is does a number of odd-size non-standard sockets to be jammed in. Caution advised. Finally and very handily, there are two appropriately shielded 4mm banana sockets on the front panel, plus a third earth socket. Nice.

    The output can be switched to off (0V out), on but floating (not referenced to ground or earth), or earth-referenced. Minor point, the voltmeter shows the actual live output voltage. So, when you switch the output to “off” the voltmeter goes to zero. So if you’ve previously set the variac to some specific output value (say, 120V), you cannot see this until you switch the output on. Solution, UNPLUG the load, switch the power supply output on, adjust output voltage, switch supply off, plug load in and switch supply on again.

    Bottom line is that this unit works very well, and allows you to work in (relative!) isolated safety on mains equipment, bringing the voltage up slowly, or testing operation at lower or (slightly) higher voltages than the standard mains. Not cheap, but safe (and certainly much cheaper than the ultimate effects of a damn good electric shock), and I expect a service life of many years.


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