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BZMJ

BZMJ-0.45-30-3-Low-voltage Shunt Power Capacitors of The-healing Type

BZMJ-0.45-30-3-Low-voltage Shunt Power Capacitors of The-healing Type

BZMJ-0.45-30-3-Low-voltage Shunt Power Capacitors of The-healing Type

BZMJ-0.45-30-3-Low-voltage Shunt Power Capacitors of The-healing Type

BZMJ

The BZMJ Self-healing Shunt Capacitor is designed to improve power factor and power quality in low-voltage AC systems up to 1000V. With advanced self-healing technology and built-in over-voltage protection, it ensures reliable, long-term reactive power compensation. Compact, durable, and easy to install, the BZMJ capacitor delivers high efficiency, low loss, and excellent sealing performance, making it ideal for industrial, commercial, and power distribution networks.

Product Information

Overview
Catalog

Rated Voltage: AC 0.23–1.0 kV
Rated Frequency: 50Hz or 60Hz
Rated Capacity: 1–60 kVar
Dielectric Loss Tangent (tan δ):
- ≤0.0012 for ≤30kVar
- ≤0.0015 for >30kVar
Capacity Error: −5% to +10%
Maximum Allowed Over-voltage: 1.1 × Un
Maximum Allowed Over-current:
- 1.3 × In (continuous)
- 1.6 × In (2h/24h)
- 2.0 × In (30min/24h)
Discharge Property: Reduces from 2Un to ≤75V within 3 min after power off
Inrush Current: ≤200 × In
Withstand Voltage:
- Interelectrode: 2.15 × Un for 10s
- Pole-to-case: 3.6 kV for 60s
Losses: ≤0.2 W/kVar
Network Harmonic Requirements: THDU ≤5%, THDI ≤20%
Protection Features: Built-in over-voltage protection and self-healing dielectric film
Lifetime Expectancy: ≥100,000 hours
Operating Temperature: −25°C to +50°C
Humidity: ≤50% at 40°C, ≤90% at 20°C
Altitude: ≤2000m
Enclosure: Metal case with anti-corrosion coating; available in compact sizes
Mounting: Fixed type; with 7×10mm mounting holes and insulated terminals for easy wiring
Standards Compliance: IEC/EN 60831-1:2014, IEC/EN 60831-2:2014

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BZMJ-Low Voltage Shunt Power Capacitors of The Self-healing Type-Catalog.pdf

252.32KB

2024-10-28

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FAQs

Under what conditions can the BZMJ Self-healing Shunt Capacitor be used?

It’s suitable for low-voltage power systems (AC ≤1000V) requiring power factor correction or reactive power compensation. The BZMJ operates reliably at ambient temperatures up to +50°C, making it ideal for industrial plants, commercial buildings, and power substations.

How does the self-healing function work?

The self-healing metallized polypropylene film automatically isolates damaged areas caused by dielectric breakdown, preventing further failure and maintaining capacitor performance throughout its 100,000-hour lifespan.

What happens if the capacitor is exposed to over-voltage or over-current?

The capacitor includes a built-in over-voltage protection device. For safety, ensure the operating voltage doesn’t exceed 1.1Un and current remains within 1.3In under continuous load. Excessive over-voltage or current may reduce service life.

Can the BZMJ capacitor be used in harmonic-rich environments?

Yes, provided that the system’s THDU ≤5% and THDI ≤20%. For higher harmonic levels, it’s recommended to use detuned reactors or harmonic filters to prevent capacitor overheating or resonance.

What precautions should be taken during installation?

Use dedicated capacitor contactors, switches, and over-current relays. Ensure the capacitor is not directly connected to systems with current-regulating devices or unloaded transformers, as this may cause over-compensation or resonance issues.