BAF

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BRAKE RESISTOR COMBINATIONS

BAF

Short-circuit-proof, „intrinsically safe“ resistor for operation with drive controllers (brake transistors), consisting of a combination of individual resistor modules of the 500/600/1000 series, mechanically connected with spring-loaded terminals.

These resistor combinations are outstanding in their compact design by virtue of their versatile base plates. Version with IP20 + IP65* protection classes available.

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Rated power

200 … 7.200 Watt (or upon request)

Resistance

1 … 17.360 Ohm (or upon request)

Dimensions

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Contact

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

Technical specifications

DIMENSIONS

Individual solutions

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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