2000W Planar Thick Film, Non-inductive High-power Resistor

Electric Support Material and Design

The electric support is crafted from alumina ceramic metalized with Miba, with an ALTOX film applied to the bottom to enhance thermal conductivity and optimize discharge performance.

Encapsulation

The encapsulation features a resin-filled epoxy casing that boasts a significant creepage distance to the mass center, a substantial air gap between terminals, and high insulation resistance (CTI 600).

Resistance Element

The resistance element is specially designed to achieve low inductance and capacitance values. It utilizes our proprietary METOXFILM technology, which exhibits exceptional performance and stability under high-power and pulse loads.

Housing

The housing is produced without any color additives, resulting in a natural color that may vary due to differences in pigmentation.

Contacts

• Load connections are easily made using M4 and M5 screws (inch-threaded terminals are available upon request).

• Connector heights range from 25mm to 42mm.

• Various sleeves can be provided to increase the creepage distance up to 85mm or for molded cable connections, as requested.

• The standard contact configuration is M5 (M4 is available upon special request, with a maximum connection screw thread of 7mm).

Application in Power Electronics

For variable-speed drives, power supplies, control equipment, robotics, motor control, and other power designs, this easy-to-install fixture ensures an automatic calibration pressure of approximately 300N on the cooling plate.

Features

• 2000W operating power

• Non-inductive design

• RoHS compliant

• High insulation and partial discharge performance

• Materials compliant with UL 94 V-0 standards

• Phase change material (PCM) pre-coated resistors available (consult for details)

Technical Specifications

• Resistance value: ≥0.1Ω - ≤6kΩ (higher values available upon request)

• Resistance tolerance: ±5% - ±10%

• Temperature coefficient: Standard ±250ppm/°C, lower TCR available for limited ohmic values upon request

• Power rating: 2000W at 125°C case bottom temperature and 60°C heatsink temperature

• Short-time overload: 2400W for 10 seconds at 70°C, with a maximum ΔR of 0.4%

• Maximum operating voltage: DC 5000V, AC 3500V (50Hz), higher voltages available upon request, but not exceeding maximum values

• Maximum continuous current: 150A (HC or HCU versions)

• Electric strength: 7kVrms / 50Hz / 500VA, tested for 1 minute between terminals and case (testing available for 12kVrms requirements), voltages above 10kVrms tested under DC equivalent to avoid component damage

• Partial discharge: 4kVrms < 10pC (7kVrms < 10pC available upon request), in accordance with IEC 60270

• Pulse peak current: Up to 1500A depending on pulse length and frequency (consult for details)

• Insulation: >10GΩ at 1000V

• Single pulse voltage: Up to 12kVrms (1/50μsec)

• Creepage distance: >42mm (standard, can be increased upon request)

• Clearance: >14mm (standard, can be increased upon request)

• Inductance: ≤80nH (typical, measured at 10kHz)

• Capacitance / Mass: ≤20pF (typical, measured at 10kHz)

• Capacitance / Parallel: ≤40pF (typical, measured at 10kHz)

• Operating temperature: -55°C to +155°C

• Installation torque - contacts: 1.8Nm to 2Nm

• Installation torque - bolts: 1.6Nm to 1.8Nm for M4 screws

• Internal temperature sensor: PT-1000 / PT-100 / Type K / Type J available (consult for details)

• Cable variability: HV-cable / Flying leads available (consult for details)

• Standard cable type: H&S Radox 9GW AX 1.5mm² (other cable types available for special requirements)

• Recommended storage conditions: In the dark, at temperatures between >0°C and +85°C, with a maximum relative humidity of 80%, for up to 12 months

• Note: Do not remove the resistor from its original packaging until ready for installation

• Approximate weight: 100g