Medium Voltage Reactive Compensation Capacitor Banks
✅Improves the system power factor above 0.95
✅Releases Electrical Capacity
✅Enhances System Stability，maintain system voltage stability
✅All-in-one integrated switching, protection & control system
✅Much smaller footprint, easier installation and commissioning vs open-rack banks
✅Patented filter-ready design, rapid conversion to harmonic filter configuration
✅Lower cost + greatly reduced ongoing maintenance work
- Product Introduction
Products Description
Our Medium Voltage Reactive Compensation Capacitor Banks provide an efficient and economical solution for improving power factor and stabilizing electrical networks across commercial, industrial, and utility applications.
Products Feature
Space-Saving Integrated Design: Combines switching, protection, and control in one highly compact unit, reducing footprint and simplifying on-site maintenance.
Wide Voltage & Capacity Range: Operates reliably from 2.4kV to 38kV with scalable outputs from 0.5MVAR to 100MVAR, suitable for global grid standards.
Future-Proof Filter-Ready Architecture: Features a patented design allowing seamless upgrades from standard capacitor banks to harmonic filter banks as power quality requirements evolve.
Rapid Deployment & Cost-Efficiency: Pre-assembled and factory-tested to minimize design complexity, streamline procurement, and accelerate commissioning times.
Extreme Durability: Built with Galvanneal or 316 Stainless Steel enclosures, rigorously tested to withstand salt spray for 5,500 hours and extreme temperatures from -50°C to +55°C.
Technical Specifications
| Parameter | Specification |
|---|---|
| Bank Configuration | Single-Step / Multi-Step / Fixed Step |
| Operating Voltage (Line-to-Line) | 2.4kV – 38kV |
| Reactive Power Output | 0.5 MVAR – 100 MVAR (500 kvar – 100,000 kvar) |
| Operating Frequency | 50Hz / 60Hz |
| Short-Circuit Rating | 16kA – 61kA (Asymmetrical Momentary) |
| Impulse Withstand Voltage (BIL) | 60kV – 200kV (Third-party certified & tested) |
| Power-Frequency Withstand Voltage | 19kV – 80kV (1 Minute, 50/60 Hz) |
| Control Voltages | AC: 110V, 115V, 120V, 220V (50/60Hz) DC: 24V, 48V, 110V, 125V, 220V |
| Enclosure Ratings | NEMA: Type 1, 3R, 4X, 12 IEC (IP): IP10, IP14, IP52, IP56 Arc Resistant: Type 1, Type 1D-5R-SL, Type 2 Hazardous Location: NEC Class I & II, Division 2 |
| Enclosure Materials | Standard: 11-gauge Galvanized Steel Optional: 12-gauge 409 / 316 Stainless Steel Coating: Salt spray corrosion resistance rated at 5,500 hours |
| Filter Ready Designs | Notch (Band-Pass), High-Pass, C-Type High-Pass, Multi-Tuned, Double-Tuned. (Tuning frequency, reactor rating, and harmonic filter type are determined during on-site conversion) |
| Operating Temperature Range | -50°C to +55°C (-58°F to 131°F) |
| Maximum Altitude (No Derating) | ≤ 1,000 Meters |
| Capacitor Fusing Type | Internally Fused / Externally Fused |
- Visible Isolation & Earthing: All units feature a visible isolation disconnect and earthing switch (via isolating switch or draw-out circuit breaker) to guarantee safe maintenance.
- Short-Circuit Protection: Incoming side protection is mandatory, utilizing main incoming fuses or circuit breakers to safeguard against faults.
- Busbar Integration Compliance: Busbar connections are permitted only when both a visible break mechanism and dedicated short-circuit protection are fully installed on the feeder circuit.
Incoming Compartment Options (Compact Version)
The incoming compartment supports flexible integration with the following key components:
Instrument Transformers (CTs & PTs): Integrated for protection signaling, control logic, and auxiliary power supply to simplify system layout.
Surge Arresters: Provides robust protection against lightning surges and switching transients (restrikes/prestrikes).
Key Interlock Systems: Ensures strict operational sequencing and safe enclosure access.
Roof-Mounted Bushings: Streamlines connections to overhead substation buswork.
Capacitor Compartment Highlights
- Full Physical Isolation: Capacitor banks are fully segregated from the incoming compartment, ensuring safe, independent maintenance.
- Flexible Connections: Standard Ungrounded Wye / Split-Wye; Grounded Wye and Delta available upon request.
- High-Voltage Ready (≥24.9 kV): Recommends C2/C3 configs with Vacuum/SF6 breakers. Optional earthing switches guarantee safe secondary discharge.
- Inrush Protection: Transient reactors are mandatory for back-to-back switching (sized precisely to system specs).
Smart Control & Protection System
Pre-Assembled & Tested
Fully integrated and factory-calibrated to eliminate expensive on-site commissioning.
01
Multi-Mode Regulation
Supports Power Factor, Voltage, and Harmonic Distortion control with Local/Remote/Auto modes.
02
Seamless SCADA Integration
Fully compatible with plant DCS/EMS systems, featuring key interlocks and PT/CT test switches.
03
Complete Auxiliary Support
Includes power quality meters, dedicated branch breakers, lighting, and thermostatically controlled climate systems.
04
Products Application
Heavy Industry & Manufacturing: Ideal for steel mills, cement plants, and automotive manufacturing to correct low power factor, reduce utility penalties, and release system capacity.
Renewable Energy Integration: Essential for wind and solar farms to stabilize voltage, manage reactive power, and ensure grid code compliance.
Oil & Gas / Petrochemical: Engineered for harsh environments with extreme temperature and high corrosion resistance, ensuring reliable operation in refineries and drilling sites.
Data Centers & Hospitals: Maintains stable voltage and high power quality for critical infrastructure, preventing downtime and protecting sensitive equipment.
Mining & Mineral Processing: Robust design withstands heavy loads and severe conditions, optimizing power efficiency in extraction and processing facilities.
FAQ
Q1: Can the capacitor banks be customized for extreme environmental conditions?
Yes. We offer enclosures in Galvanneal or 316 Stainless Steel with a salt-spray resistance rating of 5,500 hours. They are rigorously tested to operate reliably in temperatures ranging from -50°C to +55°C.
Q2: What is the advantage of the "Filter-Ready" design?
It provides future-proof flexibility. You can initially install a standard capacitor bank and seamlessly upgrade it to a harmonic filter bank later as your power quality requirements evolve, saving long-term capital costs.
Q3: How does the pre-assembled control system save costs?
Our control and protection systems are fully assembled, pre-calibrated, and factory-tested. This eliminates complex on-site wiring and significantly reduces expensive commissioning time and labor costs.
Q4: Are these capacitor banks safe for back-to-back switching applications?
Absolutely. For back-to-back switching, we integrate mandatory transient inrush reactors, precisely sized to your system voltage and reactive power rating, to safely limit high-frequency transient currents.
Q5: Can the system integrate with our existing plant SCADA/DCS?
Yes. The control system is designed for seamless integration, supporting standard communication protocols to connect directly with your plant's DCS/EMS system for remote monitoring and control.
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