EX-proof Intirnsic Transformer
Product Overview:
LCX Power-GBYQ flame-proof & intrinsically-safe transformer is special isolation voltage-conversion equipment for explosive hazardous locations.
It complies with GB3836 series explosion-proof standards, adopting heavy-duty flame-proof enclosure plus intrinsically-safe secondary winding dual-safety design.
The main winding and intrinsically-safe secondary winding adopt shielding isolation structure, effectively preventing high-voltage energy from coupling to intrinsically-safe loop.
It realizes AC voltage step-up / step-down conversion, provides safe isolated power supply for field sensors, monitoring instruments, lighting and signal equipment.
Adopt H-class insulation dry-type transformer core, vacuum pressure impregnation process. The whole unit passes explosion-proof, pressure-resistant, damp-heat and anti-impact tests.
It features high isolation performance, low temperature-rise and high reliability for coal-mine underground, petrochemical and other gas-dust explosive-risk working conditions。
Typical Applications:
· Underground coal-mine safety-monitoring, personnel-positioning, sensor isolation power supply
· Coal-mine underground lighting, signal, emergency indicator isolation voltage conversion
· Petrochemical & oil-gas field explosive-hazard-zone instrument & sensor isolating power supply
· Tunnel, mine-engineering explosion-proof monitoring system isolation power transformation
· Metallurgy & chemical-plant flammable-gas workshop instrument isolation power-supply
· Supporting isolation transformer for mine petro-chemical intrinsically-safe power-supply equipment
Technical Specifications：
1. Explosion-proof Structure & Insulation Design Heavy-duty flame-proof enclosure, intrinsically-safe secondary winding with shielding isolation structure. Explosion-proof mark Ex d[ib] I Mb. Dry-type transformer with H-class insulation, adopt vacuum pressure impregnation process, excellent insulation performance.
2、Electrical Performance
· Multi-voltage input optional (1140V /660V /380V etc.)
· Multi-group isolated AC output, including intrinsically-safe low-voltage output
· High isolation-withstand-voltage between primary and secondary windings
· Low no-load loss & low short-circuit loss, high conversion efficiency ≥97%
· Wide capacity range, capacity can be customized according to project demands
· Low temperature-rise, stable output voltage under rated load
3、Intrinsically-safe Winding Protection Special shielding isolation between primary winding and intrinsically-safe secondary winding. Built-in primary side short-circuit fuse protection. Strictly limit energy transmitted to secondary intrinsically-safe loop, prevent high-voltage coupling from igniting flammable-explosive mixture gas.
4、Complete Protection & Monitoring Functions Built-in winding temperature-measuring element, over-temperature alarm & protection function. Support over-voltage, short-circuit protection for primary side. With external grounding terminal and enclosure anti-corrosion treatment.
5、Terminal & Mechanical Structure Independent separated wiring cavities for non-intrinsically-safe and intrinsically-safe circuits. Special explosion-proof cable-introducing devices. Door-opening interlock function: power cut-off while opening cavity door for maintenance.
6、Environmental-mechanical Adaptability Air self-cooling cooling mode. 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
