Water Cooled High Power Resistors

These are 500W & 1000W high power resistors exhibiting very low operating temperatures. These models offer very low inductance and high surge handling capacity. They consist of a flat resistive element with twisted air leads. A 5 KV dielectric strength is ensured with an alumina substrate. The low operating temperature of the element gives a low failure rate in high-density, compact instruments and equipment. These models can be used in snubber resistors, GTO and IGBT in electric power conversion systems.

Specifications and Technical Details:
* Rated Power: WCR500: 500W (water cooling), WCR1000: 1000W (water cooling)
* Resistance Range: 10, 20, 40 120 ohms
* T.C.R : 250ppm/ C
* Resistance Tolerance: 10%
* Dielectric Strength: 2000VAC, between terminals
* Max.Water Pressure: 6kg/ cm squared
* Volume of Water Flow: 6 litres/ min
* Std.Water Temp.: 41C
* Water Temp. Rise: 1.4C, at outlet (power rating)
* Final Temp. Rise: 14.0C, on the M5 tapping screw (rated power)
* Surface Temp. Rise: 50.0C, on the heat sink surface resistor
* Max. Surface Temp.: 110C, on the element surface
* Pressure Loss: 0.06 kg/ cm squared
* Weight: 355g