Danotherm, 68Ω 75W Wire Wound Chassis Mount Resistor CAH165C777-68R-KT ±10%

RS Stock No.:: 144-1995
Mfr. Part No.:: CAH165C777-68R-KT
Brand:: Danotherm

Danotherm, 68Ω 75W Wire Wound Chassis Mount Resistor CAH165C777-68R-KT ±10%

Available to back order for despatch 17/06/2024

Added

Price Each

£32.04

(exc. VAT)

£38.45

(inc. VAT)

Units	Per unit
1 - 4	£32.04
5 +	£31.15

RS Stock No.:: 144-1995
Mfr. Part No.:: CAH165C777-68R-KT
Brand:: Danotherm

Technical Reference

Legislation and Compliance

COO (Country of Origin):: DK

Product Details

These dynamic braking resistors are insulated and can easily be mounted in compact constructions. They are specially constructed for high pulse loads compared to the average load. The nominal load can be improved by forced air cooling or by mounting the resistors on a heat sink.

The resistor elements are wirewound on mica support sheets. Lower ohmic values are made with helix wound elements mounted in a ceramic support part. The outer housing is an aluminium profile insulated with micanite sheets on all inner surfaces. The resistor elements are fixed symmetrically in the profile by the mica construction. This ensures a symmetric expansion of the resistors and maximum stability to high load impulses. The aluminium profile with the fixed resistor element is filled with quartz sand. This ensures a minimum change of the resistor surface temperature even if the resistor element reaches its maximum temperature during a pulse load.

Compact size

Cool surface

High pulse load capability

High vibration capability

Fully insulated - no external live parts

Mica insulation ensures high dielectric strength

High IP class

Low noise level

Flying leads

Low thermal drift of 100 ppm/K ensured by nickel-chrome 8020 alloy

Thermal relief expansion mounting feet

Optional thermal switch for thermal protection is available

Aluminium housing ensures high IP rating

The CAH series is a range of braking resistors from Danotherm's medium power range of Alpha aluminium housed compact resistors. They are electrically insulated and feature small dimensions. They can easily be fitted into compact constructions and are especially designed to endure high pulse loads in industrial drive systems. The steady state power range spans from 70 W to 410 W per housing. The pulse load capability is up to 75 times the nominal power for one second every 120 seconds, and 18 times the nominal power for five seconds every 120 seconds, depending on the ohm value and resistor type. Danotherm has developed thermal models for all resistor types and resistor values. By using these models, they are able to predict the temperature rises of the resistor wire and on the surface for all possible load applications.

Danotherm CAH brake resistors are ideal for applications in electronic variable speed drives as braking resistors. This allows you to control the speed or position of escalators, elevators, conveyor belts and cranes where regenerated energy requires dissipation. They are also suitable for renewable energy systems such as kite power, solar inverters, solar power, tidal power and wind turbines.

Specifications

Attribute	Value
Resistance	68Ω
Power Rating	75W
Series	CAH-165
Package/Case	Aluminium Housed
Tolerance	±10%
Technology	Wire Wound
Termination Style	Wire Lead
Minimum Operating Temperature	-40°C
Maximum Operating Temperature	+70°C
Minimum Temperature Coefficient	-100ppm/°C
Maximum Temperature Coefficient	+100ppm/°C
Dimensions	165 x 40 x 20.6mm
Overall Height	20.6mm
Overall Length	165mm
Overall Width	40mm

RS Stock No.:: 144-1995
Mfr. Part No.:: CAH165C777-68R-KT
Brand:: Danotherm