EX-proof Intirnsic Converter
Product Overview:
LCX Power-RNB is an industrial inverter power supply from LCX.
It converts DC power into standard sine-wave AC power.
Adopting full digital DSP control technology, it delivers pure output waveform and strong load compatibility for inductive, capacitive and impulse loads.
It supports off-grid standalone operation and can work with PV, energy storage batteries and DC bus.
Modular design allows parallel expansion of multiple units with high conversion efficiency and excellent reliability.
Optional protection class and multi-protection functions are built in.
It supports export projects and remote communication monitoring, widely used in off-grid areas and emergency backup power scenarios
Typical Applications：
· Coal-mine underground belt conveyor, scraper conveyor, fan, water-pump, winch variable-frequency speed-governing drive
· Petrochemical and oil-gas field explosive hazardous-area AC motor frequency-conversion driving
· Tunnel and mine engineering explosion-proof fan, pumping-station, hoisting equipment speed-regulation control
· Multi-motor linkage driving for mine heavy-load equipment, supporting multi-machine power balance
· Hazardous-zone motor energy-saving speed-regulation for metallurgy and flammable-gas workshops
· Explosion-proof variable-frequency driving for mining and petro-chemical off-grid energy-storage supporting system
Technical Specifications：
1. Explosion-proof Structure & Control Topology Heavy-duty flame-proof main cavity, intrinsically-safe auxiliary control circuit. Explosion-proof mark Ex d[ib] I Mb. Adopt SVPWM space-vector PWM modulation, full-digital DSP vector / V/F control; optional two-quadrant / four-quadrant energy regenerative topology. Modular power unit, support multi-module parallel expansion and multi-machine torque power balance function.
2、Electrical Performance
· Wide-range three-phase AC input, adapt to large-amplitude voltage fluctuation of mine power-grid
· Three-phase AC output frequency:0-120Hz continuous adjustable, frequency resolution ≤0.01Hz
· Frequency setting accuracy ≤±0.1%FS, output voltage precision ≤±1%FS, THD ≤3%
· Max conversion efficiency ≥94%
· Strong overload capacity:150% rated current for 60s, 200% rated current for 3s
· Support multi-segment speed, PID closed-loop regulation, AVR automatic voltage stabilization; long-distance motor cable adaptability
3、Intrinsically-safe Auxiliary Circuit Intrinsically-safe control & communication auxiliary loop with double-redundant voltage-limiting and current-limiting protection. Strictly restrict ignition energy of secondary circuit, can supply power for field sensors and monitoring instruments within hazardous zone.
4、Complete Multi-level Protection Functions Input over-voltage / under-voltage, phase-loss protection; output over-voltage, over-current, short-circuit, over-temperature, stall-protection, earth-leakage interlock protection; motor overload protection. Fault latch-off, complete fault-event recording and fault locating function.
5、HMI & Communication Interface Local explosion-proof color display window with Chinese-English bilingual. Real-time display of input / output voltage, current, frequency, running status and alarm information. Support fault data export. Standard RS485, Ethernet interfaces, Modbus protocol, support remote monitoring, parameter setting and data uploading for unattended hazardous sites.
6、Cooling & Environmental-mechanical Adaptability Intelligent temperature-controlled forced air cooling, optional water-cooled version. High-strength flame-proof enclosure, anti-shock, anti-vibration, damp-heat & corrosion-resistant. Operating temperature:-20℃ ~ +55℃, adapt to underground mine, petrochemical sites with dust and corrosive gas.
Technical Parameters and Selection
Technical Parameters and Selection
