BWx…K…R

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BRAKE RESISTOR COMBINATIONS

BWx…K…R

Short-circuit-proof, „intrinsically safe“ resistor for operation with drive controllers (brake transistors), consisting of single resistor modules of the BWD250/500/600/1000 series, installed in a subframe.

Single resistors in a subframe ideally fit between the mounting plate of the control cabinet and the inverter. Their design safes installation space and brings the ability to perfectly diffuse the generated heat of the resistor. They always come with protection class IP65*.

Spotlight

Rated power

100 … 800 Watt (or upon request)

Resistance

3 … 830 Ohm (or upon request)

Dimensions

PRODUCT REQUEST

Contact

Michael Koch GmbH
Phone: +49 7251 96 26-200

Technical specifications

DIMENSIONS

Individual solutions

Downloads

Technical specifications

Parameter	Symbol	Value	Unit	Conditions
Tolerance (resistance)		± 5	%	Room temperature
Insulation resistance	R_ISO	≥ 100	MΩ	U_mess = 1,000 VDC
Inductance	L	≤ 30	µH	f = 300 kHz, U_mess = 50 mV
Capacity against enclosure	C	≤ 300	pF	f = 300 kHz, U_mess = 50 mV
Thermal time constant	𝜏	approx. 550	s	BWD250/500
	𝜏	approx. 600	s	BWD600
	𝜏	approx. 850	s	BWD1000
Energy absorption BWD250	Q	4	kJ	with 1.2 s (1% duty cycle)
	Q	8	kJ	with 7.2 s (6% duty cycle)
Energy absorption BWD500	Q	7,5	kJ	with 1.2 s (1% duty cycle)
	Q	15	kJ	with 7.2 s (6% duty cycle)
Energy abs. BWD600/1000	Q	13	kJ	with 1.2 s (1% duty cycle)
	Q	26	kJ	with 7.2 s (6% duty cycle)
Maximum permissible operating voltage	U_B	≤ 700 AC	V	Taking into consideration the „intrinsic safety“
	U_B	≤ 1,000 DC	V	Taking into consideration the „intrinsic safety“
Maximum permissible operating voltage	U_B	≤ 600 AC	V	according to CSA and UL
	U_B	≤ 848 DC	V	according to CSA and UL
Isolation voltage	U_iso	≥ 4,000 AC	V	f = 50 Hz; t = 1 s
Max. permissible case temp.	ϑ_c	≤ 250	°C	unobstructed convection
	ϑ_c	≤ 300	°C	unobstructed conv. (BWD1000)
Storage temperature	ϑ_s	-25 … +85	°C