Product Description :
Our high power resistors exhibit 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 dielectric strength 5 KV is ensured with an alumina substrate. Its low operating temperature of the element gives a low failure rate in high-density, compact instruments and equipment. These models are extensively used in snubber resistors, GTO and IGBT in electric power conversion systems. Following are the 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
