EX-proof Intirnsic DC Supply
Product Overview:
LCX Power-GDC flame-proof & intrinsically-safe DC power supply is special DC power conversion equipment for explosive hazardous environment.
It converts wide-range AC or DC input into multi-channel stable intrinsically-safe DC output. Built-in double-limit voltage-current intrinsically-safe protection circuit, strictly limit output spark energy, suitable for power supply of monitoring, sensors, communication instruments under flammable-gas & coal-dust hazardous zones.
Adopt full-digital DSP closed-loop control, modular power unit, support backup battery access for uninterrupted power supply.
The unit passes explosion-proof, damp-heat and anti-impact test. High safety, anti-vibration and high reliability for coal mine, petrochemical and other explosive-risk industrial sites.
Typical Applications：
· Coal-mine underground monitoring, sensor, personnel-positioning system DC power supply
· Petrochemical, oil-gas field hazardous-area field-sensor & instrument power supply
· Tunnel, mine engineering explosion-proof automatic control terminal power supply
· Safety monitoring system backup power in explosive hazardous zones
· Metallurgy & chemical plant flammable-gas workshop on-site instrument power supply
· Off-grid energy-storage matching DC power unit for mining and petro-chemical sites
Technical Specifications：
1、Explosion-proof Structure & Topology Heavy-duty flame-proof enclosure, intrinsically-safe output circuit, explosion-proof mark Ex d[ib] I Mb. Full-digital DSP DC-DC closed-loop control, modular power unit, support multi-module parallel expansion, multi-channel independent intrinsically-safe output.
2、Electrical Performance
· Wide-range AC / DC dual-mode input
· Multi-channel intrinsically-safe DC output, continuously adjustable
· Output voltage precision ≤±0.5%FS, low output ripple coefficient ≤0.8%
· Max conversion efficiency ≥94%
· Support battery hot-standby, zero switching for uninterrupted power supply
3、Dual-Redundant Intrinsically-safe Protection Double-redundant voltage-limiting & current-limiting protection for intrinsically-safe loop. Strictly restrain output circuit spark energy. After fault removal, output can auto-recover. Effectively avoid igniting flammable-explosive mixed-gas under fault state.
4、Complete Multi-level Protection Functions Input over-voltage / under-voltage, reverse-connection protection; output over-voltage, over-current, short-circuit, over-temperature protection; battery over-charge / over-discharge protection. Fault latch-off and fault-event record function.
5、HMI & Communication Interface Local explosion-proof observation window, real-time view input/output voltage, current, battery status and alarm information. Standard RS485 interface, Modbus protocol, support remote monitoring and data uploading for unattended hazardous sites.
6、Environmental & Mechanical Adaptability High-strength flame-proof enclosure, anti-shock, anti-vibration, damp-heat & corrosion-resistant. Operating temperature:-20℃ ~ +55℃; adapt to underground, petrochemical harsh working conditions with dust and corrosive gas.
Technical Parameters and Selection
Technical Parameters and Selection
