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GE CK95BE311J
Product Overview
The GE CK95BE311J is an HVDC (High-Voltage Direct Current) capacitor under the Critical Power series of General Electric (GE). It is specifically designed for power electronic equipment, industrial frequency converters, and new energy power generation systems (such as wind power and photovoltaic inverters). This capacitor adopts metallized film technology, featuring high energy density, low loss, and long service life, making it suitable for key applications including high-frequency filtering, DC support, and energy buffering.
The core values of the CK95BE311J are as follows:
- High Reliability: Self-healing design that automatically restores insulation performance in case of local breakdown.
- Low ESR (Equivalent Series Resistance): Reduces heat loss under high-frequency operating conditions.
- Wide Temperature Operation: Adapts to severe temperature fluctuations in industrial environments.
Product Specifications
- Product Model: CK95BE311J
- Manufacturer: General Electric (GE)
- Product Type: Metallized Polypropylene Film Capacitor (MKP)
- Rated Capacitance: 0.31μF (±5% tolerance)
- Rated Voltage: 950V DC
- Surge Voltage: 1200V DC (sustained for 1 second)
- ESR (Equivalent Series Resistance): ≤10mΩ @ 10kHz
- Operating Temperature Range: -40°C to +85°C (-40°F to +185°F)
- Expected Lifetime: 100,000 hours @ rated voltage +70°C
- Terminal Type: Copper pins (15mm pitch, customizable)
- Protection Class: Non-hermetic (requires dust-proof and moisture-proof installation)
- Certification Standards: IEC 61071, UL 810
Structure and Composition
The CK95BE311J adopts a wound structure, with main components including:
- Dielectric Layer: Polypropylene film (thickness ≈3μm), providing high dielectric strength and low dielectric loss.
- Electrode Layer: Vacuum-evaporated metal (zinc/aluminum), whose self-healing property can repair local breakdown points.
- Encapsulation Material: Flame-retardant epoxy resin (UL94 V-0), preventing arc diffusion.
- Terminals: Tin-plated copper pins, supporting PCB soldering or bolt fixing.
Key Features and Advantages
-
Excellent High-Frequency Performance:
- Low ESR (≤10mΩ) and low inductance (≤20nH), suitable for DC-Link filtering of IGBT frequency converters (e.g., when used with the GE AF-650 frequency converter).
- High capacitance stability (ΔC/C ≤ ±2% @ -40°C to +85°C).
-
Long Lifetime and Reliability:
- Self-healing property can withstand transient overvoltage (such as IGBT switching surges).
- 100,000-hour lifetime design reduces maintenance costs.
-
Industrial-Grade Durability:
- Passed the 85°C/85% RH double 85 test, adapting to humid environments.
- Complies with the IEC 61071 power capacitor standard.
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