Electric Crane Hoist

2 Types Explosion-Proof Electric Chain Hoists for Hazardous Zones: Gas & Dust Protection

Explosion-proof electric chain hoists, that is, based on ordinary chain electric hoist, motor, electrical appliances, and some parts to take explosion-proof measures, according to the different environments, divided into gas explosion-proof and dust explosion-proof.

Explosion-proof electric chain hoists features:

Use of the environment, temperature -20 ℃ ~ +40 ℃, altitude of 1000m or less, relative humidity of 95%, can prevent dripping occasions.
Rated lifting capacity 1t~35t.
Grid fluctuation at ±10%.
Applications: military, nuclear industry, aviation, aerospace, machinery manufacturing, petroleum, chemical and other industries.

Types of explosion-proof electric chain hoists

Explosion-proof electric chain hoist with motorized trolley

4 Fixed explosion proof electric chain hoists

Hook Suspension Fixed explosion-proof electric chain hoists

Explosion-proof electric chain hoists with motorized trolley

3.1 explosion proof electric chain hoist

Parameters

Capacity		t	1	2	2	3	3	5	10	15	20	25	30	35
Lifting speed		m/min	6.8	6.8	3.4	5.4	3.4	2.7	2.8	1.9	1.4	1.1	0.9	0.7
Lifting motor	Power	kw	1.5	3	1.5	3	3	3	3.0×2	3.0×2	3.0×2	3.0×2	3.0×2	3.0×2
	Rotation speed	r/min	1440	1440	1440	1440	1440	1440	1440	1440	1440	1440	1440	1440
	Phases		3	3	3	3	3	3	3	3	3	3	3	3
	Voltage	V	220-440	220-440	220-440	220-440	220-440	220-440	220-440	220-440	220-440	220-440	220-440	220-440
Operating motor	Power	kw	0.4	0.4	0.4	0.4	0.4	0.75	0.75×2	0.75×2	0.75×2	0.75×2	0.75×2	0.75×2
	Rotation speed	r/min	10/20	10/20	10/20	10/20	10/20	10/20	10/20	10/20	10/20	10/20	10/20	10/20
	Operating speed	m/min	1440	1440	1440	1440	1440	1440	1440	1440	1440	1440	1440	1440
	Phases		3	3	3	3	3	3	3	3	3	3	3	3
	Voltage	V	220-440	220-440	220-440	220-440	220-440	220-440	220-440	220-440	220-440	220-440	220-440	220-440
I-Beam		mm	80-160	82-187	82-187	100-178	100-180	110-180	150-220	150-220	150-220	150-220	150-220	150-220

Hook suspension fixed explosion-proof electric chain hoists

Parameters

Capacity		t	1	2	2	3	3	5	10	15	20	25	30	35
Lifting speed		m/min	6.8	6.8	3.4	5.4	3.4	2.7	2.8	1.9	1.4	1.1	0.9	0.7
Lifting motor	Power	kw	1.5	3	1.5	3	3	3	3.0×2	3.0×2	3.0×2	3.0×2	3.0×2	3.0×2
	Rotation speed	r/min	1440	1440	1440	1440	1440	1440	1440	1440	1440	1440	1440	1440
	Phases		3	3	3	3	3	3	3	3	3	3	3	3
	Voltage	V	220-440	220-440	220-440	220-440	220-440	220-440	220-440	220-440	220-440	220-440	220-440	220-440

Explosion-proof hoists for the environment

Explosion-proof hoists are suitable for use in explosive gas environments Zone 1 and Zone 2 or combustible dust environments Zone 21 and Zone 22.

Temperature Group		Maximum permissible surface temperature ℃
T_A or T_B	T₁	450
	T₂	300
	T₃	200
	T₄	135
	T₅	100
	T₆	85

Class II explosion-proof hoist explosion-proof level and the corresponding temperature group applicable explosive gases are listed below:

Explosion-proof grade	Temperature Group
Explosion-proof grade	T₁	T₂	T₃	T₄	T₅	T₆
IIA	Ethane, propane, styrene, benzene, xylene, carbon monoxide, acetone, acetic acid, methyl acetate, ammonia, pyridine	Ethanol, butane, propylene, ethyl acetate, methylene chloride, vinyl chloride, chloroethanol, thiophene, cyclopentane, dimethylamine	Pentane, hexane, ethylcyclopentane, turpentine, naphtha, petroleum (including military gasoline), fuel oil, chlorobutane, tetrahydrothiophene	Acetaldehyde, trimethylamine		Ethyl nitrite
IIB	Propyne, acrylonitrile, hydrogen cyanide, coke oven gas	Ethylene, ethylene oxide, methyl acrylate, furans	Dimethyl ether, acrolein, tetrahydrofuran, hydrogen sulfide	Dibutyl ether, diethyl ether, ethyl methyl ether, tetrafluoroethylene
IIC	Hydrogen, water gas	Ethyne C2H2		Carbon disulfide	Ethyl nitrate

Dust class explosion-proof hoist each anti-dust structure form and the corresponding temperature groups of combustible dust to adapt to the following table:

Dust explosion-proof form	Temperature Group
Dust explosion-proof form	T_A、T₁ or T_B、T₁	T_A、T₂ or T_B、T₂
A or B	Magnesium, red phosphorus, calcium carbide, soap powder, green fuel, phenol dyes, polyethylene, polypropylene, polyurethane, polyvinyl chloride, hard rubber, natural resins, rosin, wheat flour, corn starch, granulated sugar powder, cotton fiber, synthetic staple fiber, anthracite powder, charcoal powder, coal coke powder	Sifted Rice Flour, Cocoa Flour, Malt Flour, Flax Meal Flour, Coconut Flour, Peat Flour, Lignite Flour, Bituminous Coal Flour, Coal Flour for Coke, Lignite Coke Flour