8YS-K0055R0.005-0 Servo Motor by B&R

Introduction and Technical Specifications of 8YS-K0055R0.005-0

1. Product Introduction

8YS-K0055R0.005-0 is a high-performance industrial power resistor designed for power electronic systems and industrial drive applications. It features high power density, low contact resistance, and excellent thermal stability, adhering to international industrial standards and strict quality control specifications. The product is specifically engineered to handle high current loads, providing reliable current limiting, energy dissipation, and voltage division functions in scenarios such as inverter circuits, motor drives, and power distribution systems. With robust structural design and strong environmental adaptability, it is widely used in industries including power generation, metallurgy, rail transit, and industrial automation, ensuring stable operation of core equipment under harsh working conditions.

1. Technical Specifications

(1) General Information

Product Model: 8YS-K0055R0.005-0

Product Category: Industrial Power Resistor (Wirewound/Metal Clad Type)

Design Standards: Complies with IEC 60269, DIN 43120, and international industrial resistor standards

Certifications: CE, RoHS compliant

Operating Mode: Continuous duty (continuous operation under rated conditions)

(2) Electrical Specifications

Rated Resistance: 0.005 Ω (5 mΩ) ±5% tolerance

Rated Power: 55 W (at 40 °C ambient temperature)

Rated Current: 105 A (continuous operation, based on rated power and resistance)

Maximum Surge Current: 1500 A (peak value, duration ≤10 ms)

Insulation Resistance: ≥100 MΩ (500 VDC, between resistor element and housing)

Dielectric Strength: 2 kVAC, 1 minute (between resistor terminals and ground)

Temperature Coefficient of Resistance (TCR): ±20 ppm/°C (at -20 °C to +60 °C)

Maximum Operating Voltage: 300 VDC / 250 VAC

Power Dissipation Capacity: 55 W (continuous) / 110 W (short-term, ≤1 hour)

(3) Environmental Conditions

Operating Temperature Range: -40 °C to +125 °C

Storage Temperature Range: -55 °C to +150 °C

Relative Humidity: 5% to 95% (non-condensing, no dew formation)

Operating Altitude: Up to 3000 meters above sea level (derate 0.5% per 100 meters above 3000 meters)

Vibration Resistance: Complies with IEC 60068-2-6, 10-2000 Hz, 10 m/s² acceleration

Shock Resistance: Complies with IEC 60068-2-27, 50 g acceleration, 6 ms duration (half-sine wave)

Protection Against Contaminants: Suitable for use in environments with moderate dust; avoid corrosive gases, oil mist, and conductive particles

(4) Mechanical Characteristics

Dimensions (W × H × D): 60 mm × 45 mm × 80 mm (±3 mm tolerance)

Mounting Type: Panel mounting (with M4 threaded holes, 2 mounting points)

Housing Material: Aluminum alloy (anodized surface treatment, corrosion-resistant)

Resistor Element Material: High-purity nickel-chromium (NiCr) alloy wire (high temperature resistance, low aging)

Terminal Type: Copper alloy terminals (silver-plated, low contact resistance)

Weight: Net weight 0.35 kg, gross weight 0.5 kg (including packaging)

(5) Reliability & Protection

Mean Time Between Failures (MTBF): ≥200,000 hours (at 40 °C operating temperature, per IEC 61709)

Overload Capacity: 150% of rated power for 1 hour (without permanent damage)

Thermal Stability: Resistance drift ≤±3% after 1000 hours of continuous operation at rated power

Protection Features: Overheat resistance (automatic power reduction at extreme temperatures), anti-vibration loose design

(6) Installation & Operation

Wiring Requirements: Compatible with 1.5-4 mm² copper conductors; torque for terminal screws: 2.5 N·m

Mounting Clearance: Minimum 20 mm clearance from adjacent components (for heat dissipation)

Operating Instructions: Avoid direct contact with flammable materials; ensure adequate ventilation in the installation environment

Maintenance Cycle: Visual inspection every 6 months; resistance value calibration every 2 years (under harsh operating conditions)