BWx Safe brake resistors

Product catalog summary

Overview
This document outlines the technical specifications for safe brake resistors used in inverters and brake transistors. These resistors utilize wire-wound technology and are encased in aluminum with IP65 protection, ensuring they are short-circuit proof and intrinsically safe.

Specifications

Brake Resistor BWx150: 60W rated power (150W with 35% duty cycle), resistance options of 11, 75, and 300 Ohms, max temperature 250°C, dimensions 80 x 52 x 28 mm.
Brake Resistor BWx200: 50W rated power (100W with forced cooling), 90 Ohms resistance, max temperature 250°C, dimensions 105 x 22 x 36.5 mm.
Brake Resistor BWx250: 100W rated power (250W with 35% duty cycle), resistance options 3 to 830 Ohms, max temperature 250°C, dimensions 110 x 80 x 15 mm.
Brake Resistor BWx350: 75W rated power (150W with forced cooling), 45 Ohms resistance, max temperature 250°C, dimensions 185 x 36 x 31.6 mm.
Brake Resistor BWx375: 70W rated power (150W with forced cooling), 90 Ohms resistance, max temperature 250°C, dimensions 185 x 22 x 36.5 mm.
Brake Resistor BWx500: 200W rated power (500W with 35% duty cycle), resistance options 10 to 620 Ohms, max temperature 250°C, dimensions 216 x 80 x 15 mm.
Brake Resistor BWx600: 240W rated power (600W with 35% duty cycle), resistance options 5 to 300 Ohms, max temperature 250°C, dimensions 216 x 80 x 30 mm.
Brake Resistor BWx1000: 400W rated power (1,000W with 35% duty cycle), resistance options 5 to 300 Ohms, max temperature 300°C, dimensions 216 x 80 x 30 mm.

Common Features

Tolerance of ±5% and temperature coefficient of 20 to 100 x 10^-6/K.
Insulation resistance ≥ 100 MΩ at 1,000 VDC, inductance ≤ 30 mH at 300 kHz.
Certified under CSA-C22.2 and UL508 standards.
Energy absorption varies with duty cycles.
Max operating voltages ≤ 700 AC V and ≤ 1,000 DC V, isolation voltages ≥ 4,000 AC V.
Storage temperature from -25 to +85°C.

Applications and Recommendations
These resistors are suitable for industrial applications involving inverters and brake transistors, designed to handle high pulse loads. Proper installation and adherence to duty cycles are recommended for safety and efficiency.

Product Versions
Includes BWD1000, BWG1000, BWS1000, and BWT1000.

Technical Specifications

Tolerance: ± 5% at room temperature.
Temperature Coefficient: 20 to 100 x 10^-6/K.
Insulation Resistance: ≥ 100 MW at 1,000 VDC.
Inductance: ≤ 30 mH at 300 kHz.
Capacity Against Enclosure: ≤ 300 pF at 300 kHz.
Thermal Time Constant: ~850 seconds.
Weight: 1,050 grams.
Energy Absorption: 13 kJ with 1.2 s (1% duty cycle), 26 kJ with 7.2 s (6% duty cycle).
Max Voltage: ≤ 700 AC V and ≤ 1,000 DC V.
Isolation Voltage: ≥ 4,000 AC V at 50 Hz.
Max Case Temperature: ≤ 300 °C.
Storage Temperature: -25 to +85 °C.

Test Conditions
Water jet test with a 6.3 mm nozzle, 12.5 l/min flow rate, at 2.5-3m distance for 3 minutes.

Safety Features
No short-circuit, no fault to frame, self-extinguishing, no casing melting under specified conditions.

Company Information
Michael Koch GmbH, Zum Grenzgraben 28, 76698 Ubstadt-Weiher, Germany. Contact: +49 7251 96 26-200, [email protected].

Company Offerings
Tested product quality, certified processes, application support, machine-specific design, rapid reaction, quick delivery, reliable partnership, long-term relationships, direct customer relations.

Specializations
Active energy management devices and systems, safe brake resistors.

Catalog excerpts

Energizing Productivity Safe brake resistors in wire-wound technology Safe brake resistors

Open the catalog to page 1

Energizing Productivity Brake resistor Short-circuit proof, „intrinsically safe“2 resistor for use in inverters (brake transistors) in an aluminum case, IP651 protection class. Technical specifications 60 (150 with duty cycle ED = 35%, JA = 20°C) (JA = 20°C, unless otherwise specified) Parameter Tolerance (resistance) Temperature coefficient Insulation resistance Enclosure: 0 x 52 x 28 8 Wiring: length 510±40 Ø AWG16 or 1.5 mm² PTFE isolated, UL Style 1659 Capacity against enclosure Energy absorption Conditions Room temperature Thermal time constant with 1.2 s (1% duty cycle) Taking into consideration...

Open the catalog to page 2

Energizing Productivity Brake resistor Short-circuit proof, „intrinsically safe“2 resistor for use in inverters (brake transistors) in an aluminum case, IP651 protection class. Technical specifications 50 (100 with forced cooling) (JA = 20°C, unless otherwise specified) Parameter Tolerance (resistance) Temperature coefficient Insulation resistance Inductance Enclosure: 05 x 22 x 36.5 1 Wiring: length 290±20 Ø AWG16 or 1.5 mm² PTFE isolated, UL Style 1659 Capacity against enclosure Thermal time constant Conditions Room temperature Energy absorption Maximum permissible operating voltage Max. permissible...

Open the catalog to page 3

Energizing Productivity Brake resistor Short-circuit proof, „intrinsically safe“2 resistor for use in inverters (brake transistors) in an anodized aluminum case, IP651 protection class. Technical specifications 100 (250 with duty cycle ED = 35%, JA = 20°C) (JA = 20°C, unless otherwise specified) Parameter Tolerance (resistance) Temperature coefficient Insulation resistance Capacity against enclosure Enclosure: 10 x 80 x 15 1 Wiring: length 510±40 Ø AWG16 or 1.5 mm² PTFE isolated, UL Style 1659 Thermal time constant Maximum permissible operating voltage Conditions Room temperature with 1.2 s (1%...

Open the catalog to page 4

Energizing Productivity Brake resistor Short-circuit proof, „intrinsically safe“2 resistor for use in inverters (brake transistors) in an aluminum case, IP651 protection class. Technical specifications 75 (150 with forced cooling) (JA = 20°C, unless otherwise specified) Parameter Tolerance (resistance) Temperature coefficient Insulation resistance Inductance Enclosure: 85 x 36 x 31.6 1 Wiring: length 330±20 Ø AWG16 or 1.5 mm² PTFE isolated, UL Style 1659 Capacity against enclosure Thermal time constant Conditions Room temperature Energy absorption Maximum permissible operating voltage Max. permissible...

Open the catalog to page 5

Energizing Productivity Brake resistor Short-circuit proof, „intrinsically safe“2 resistor for use in inverters (brake transistors) in an aluminum case, IP651 protection class. Technical specifications 70 (150 with forced cooling) (JA = 20°C, unless otherwise specified) Parameter Tolerance (resistance) Temperature coefficient Insulation resistance Inductance Enclosure: 85 x 22 x 36.5 1 Wiring: length 290±20 Ø AWG16 or 1.5 mm² PTFE isolated, UL Style 1659 Capacity against enclosure Thermal time constant Conditions Room temperature Energy absorption Maximum permissible operating voltage Max. permissible...

Open the catalog to page 6

Energizing Productivity Brake resistor Short-circuit proof, „intrinsically safe“2 resistor for use in inverters (brake transistors) in an anodized aluminum case, IP651 protection class. Technical specifications 200 (500 with duty cycle ED = 35%, JA = 20°C) (JA = 20°C, unless otherwise specified) Parameter Tolerance (resistance) Temperature coefficient Insulation resistance Inductance Capacity against enclosure Thermal time constant Enclosure: 16 x 80 x 15 2 Wiring: length 510±40 Ø AWG16 or 1.5 mm² PTFE isolated, UL Style 1659 Maximum permissible operating voltage Conditions Room temperature with...

Open the catalog to page 7

Energizing Productivity Brake resistor Short-circuit proof, „intrinsically safe“2 resistor for use in inverters (brake transistors) in an anodized aluminum case, IP651 protection class. Technical specifications 240 (600 with duty cycle ED = 35%, JA = 20°C) (JA = 20°C, unless otherwise specified) Parameter Tolerance (resistance) Temperature coefficient Insulation resistance Inductance Capacity against enclosure Enclosure: 16 x 80 x 30 2 Wiring: length 510±40 Ø AWG14 or 2.5 mm² PTFE isolated, UL Style 1659 Thermal time constant Maximum permissible operating voltage Conditions Room temperature with...

Open the catalog to page 8

Energizing Productivity Brake resistor Short-circuit proof, „intrinsically safe“2 resistor for use in inverters (brake transistors) in an anodized aluminum case, IP651 protection class. Technical specifications 400 (1.000 with duty cycle ED = 35%, JA = 20°C) (JA = 20°C, unless otherwise specified) Parameter Tolerance (resistance) Temperature coefficient Insulation resistance Inductance Capacity against enclosure Enclosure: 16 x 80 x 30 2 Wiring: length 510±40 Ø AWG14 or 2.5 mm² PTFE isolated, UL Style 1659 Thermal time constant Energy absorption Maximum permissible Isolation voltage Storage temperature...

Open the catalog to page 9

Energizing Productivity What we offer: Tested product quality Certified processes Individual application support Machine specific design and sizing Rapid reaction Quick delivery times On-time delivery Reliable partner Long-term business relationship Direct customer relations Your specialist for: Active energy management devices and systems Safe brake resistors We look forward to hearing from you! Michael Koch GmbH Zum Grenzgraben 28, 76698 Ubstadt-Weiher, Tel. +49 7251 96 26-200 www.brakeenergy.com, [email protected] Technical changes reserved. MK_DAT_BWx_ENG_R01_1

Open the catalog to page 10

BWx Safe brake resistors

BWx Safe brake resistors

Catalog excerpts

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