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GE CK95BE311J capacitor module
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.
Application Fields
The CK95BE311J is mainly used in the following scenarios:
- Frequency Converters/Inverters:
- DC bus (DC-Link) filtering to suppress high-frequency ripples.
- MPPT circuits of photovoltaic inverters (e.g., GE Solar LV5).
- Industrial Power Supplies:
- PFC (Power Factor Correction) circuits of switching power supplies (SMPS).
- New Energy:
- Energy buffering in the intermediate circuit of wind power converters.
Typical Application Case
In industrial frequency converters (e.g., GE AF-650), the CK95BE311J acts as a DC-Link capacitor and works with the IGBT module (FF450R12KE3) to smooth the DC voltage ripples after rectification.
Related Products
- CK95BE561J: A 0.56μF/950V capacitor in the same series, an upgraded version in terms of capacitance.
- GE AF-650: General-purpose frequency converter, a typical supporting device.
- FF450R12KE3: Infineon IGBT module, a commonly used switching device.
Installation and Maintenance
Installation Points
- Avoid mechanical stress during PCB layout (pin pitch is strictly designed to 15mm).
- Ensure balanced current distribution when used in parallel (symmetrical wiring is recommended).
Maintenance Recommendations
- Regularly check the capacitor’s appearance (immediately replace if bulging or liquid leakage occurs).
- Use an LCR meter to measure capacitance attenuation (the capacitor is invalid if the capacitance drops by ≥10%).
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Since our establishment, we have focused exclusively on large-scale imported industrial control systems for 16 years. What sets us apart is our deep understanding of high-tech automation ecosystems—we don’t just sell parts; we deliver end-to-end value through genuine components and tailored system integration, making us a trusted global partner for industrial clients.
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Our offerings are curated to cover critical industrial automation needs, with a focus on reliability and compatibility:
- Control Systems: Distributed Control Systems (DCS), Programmable Logic Controllers (PLC), Redundant Fault-Tolerant Control Systems
- Industrial Hardware: MOTOROLA MVME Industrial Modules, Remote I/O Modules (RTU), Industrial PCs (IPC), Industrial Low-Frequency Screens
- Connectivity & HMI: Industrial Communication Converters (Anybus), AnyBus Gateways, HMI SCSI (50/68/80 Pin)
- Specialized Systems: Robot Systems, Spare Parts for Automation Equipment
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We only collaborate with top-tier technology leaders to ensure our clients get authentic, high-performance components. Our key brand partners include:
Foxboro, Tricon, Ovation, Motorola, Xycom, ABB, Allen Bradley, Schneider, Siemens, GE Fanuc, Yaskawa, Woodward.
Foxboro, Tricon, Ovation, Motorola, Xycom, ABB, Allen Bradley, Schneider, Siemens, GE Fanuc, Yaskawa, Woodward.
This strict brand selection has solidified our position as a global supplier of industrial automation spare parts—we bridge the gap between international brands and local industrial needs.
What Makes Us Unique
1. Tailored Solution Design
Unlike one-size-fits-all providers, we analyze your specific industry (manufacturing, energy, logistics, etc.) to recommend PLCs, inverters, or sensors that align with your operational goals—ensuring optimal performance.
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We combine global supply chain reach with localized service: no matter where you are, we guarantee on-time delivery of genuine products, plus on-site technical support when you need it.
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Our long-standing brand partnerships (16+ years) mean zero risk of counterfeit parts. Every component is traceable, giving you peace of mind for critical industrial operations.
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We support you beyond purchase: from pre-sales product testing and technical consulting to post-sales maintenance and replacement—your automation system’s longevity is our priority.
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