HPW
- Togami Electric's Strengths
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Products
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Magnetic Contactor / Starter
Togami Electric Mfg. manufacturers standard electromagnetic contactor/starters, economical electromagnetic contactor/starters, DC-operated electromagnetic contactor/starters, and other types of electromagnetic contactor/starters.
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PCB Relay
Our extensive lineup includes PCB relays used for inrush current prevention circuits and pre-charge circuits.
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Motor Control Center
These are units for controlling the switching of equipment, including motors and pumps. They feature a compact design for cost-effectiveness and ease of use, allowing flexible custom designs combining the functions required to meet customer needs.
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Switchboard
We offer an extensive lineup of different distribution boards, including high-voltage distribution boards. Flexible custom designs are possible by combining those functions required to meet customer needs.
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Explosion-Proof and Corrosion-Resistant Control Equipment
We offer a lineup of explosion-proof control equipment for use in explosion-proof areas, corrosion-resistant control equipment ideal for use in environments where corrosive gases are present.
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Super Line Checker
This is ideal for checking lines following faults or during maintenance before electrical equipment expansion or modification work. It allows live power lines to be checked by a single operator.
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Recloser
Togami Electric Mfg. Co., Ltd. designs, manufactures, and supplies Automatic Circuit Reclosers (Fault Clear) for power distribution lines.
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Ring Main Unit (RMU)
We manufacture Ring Main Units (RMU) to connect, control, and protect different sections of a ring network.
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COMPANY
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the Earth,
and the future prosperous!』 -
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- Products
- Explosion-Proof and Corrosion-Resistant Control Equipment
- Explosion-Proof Control Switches(Aluminum Alloy Model)
PRODUCTS
Explosion-Proof Control Switches
(Aluminum Alloy Model)Aluminum alloy explosion-proof control switches with explosion protection ratings of d2G5※ and d3aG5※.
※ Electrical Equipment Explosion-Proof Design Standard (Japan)
Model type
Type Material Hazardous location Explosion-proof construction EPS・EPW・EDW Aluminium alloy type Applicable in hazardous locations class 1 and 2 d2G5 HPS・HPW d3aG5 Specifications
Explosion-proof construction Explosion-proof Explosion-proof（Hydrogen gas correspondence） Type EPS・EPW・EDW HPS・HPW Explosion-proof performance d2G5(division 1 and 2 area) d3aG5(Water gas and Hydrogen area) Water-proof performance Explosion-proof for outdoor（technical guide RⅡS-TR-79-1） Material（case） Aluminium alloy model Rated insulation voltage 250 VAC,250 VDC Insulation Resistance More than 5 MΩ（by 500 VDC megger） Withstand voltage 1500 V for 1 minute Standard service condition
（technical guide RⅡS-TR-79-1）Sea level：up to 1000 m
Ambient temperature：－10 ℃ to 40 ℃
Relative humidity：45% to 85％Painting color Munsell No.N7 for outer face Dimensions
Specifications(control unit)
Learn more
Meter※1 Ammeter 60 mm square, 3-times scale, with a red pointer A or ／5 A with CT rate
(But, it's direct retirement possible to 30 A.)Voltmeter 60, 150 V or 300 V Push-button switch※2 ※3
（type:PB-H11）Rated current 10 A Operating current 220 VAC-5 A 110 VDC-1.3 A（lagging load） Color Standard：Black（on)-Red（off)
By request：Red（n)-Green（off)Letter ON-OFF Contact ON･･･1NO and 1NC OFF･･･1NO and 1NC Changeover switch
（type:TS-H11）Notch ２ or ３ Rated current 10 A Operating current 220 VAC-5 A 110 V-1.3 ADC（lagging load） Color Black Letter Standard：REM-DIR, AUT-MAN, AUT-OFF-MAN
By request:No.1-No.2、AUT-MANContact 1NO and 1NC Indicating lamp Bulb LED Color Red, green, orange, white or clarity Voltage 100 VAC,110 VAC,200 VAC,220 VAC
100 VDC,110 VDC,200 VDC,220 VDC※1 It's possible to manufacture DC ammeter, a DC voltmeter and a rev counter.
※2 "OFF" locking device
ーStandardー
Push-button has an "OFF" locking device to prevent maloperation. For locking, push-turn 90° to right or left side.
ーBy requestー
Padlocking device will be provided, where required. For padlocking, though the locking plate on the push-button switch then apply the padlock into the hole of the locking plate.(Pad lock general purpose is applicable.)
※3 Protection cover
To prevent the button form adhesion and penetration of dust and foreign matters and from prenetration of seawater.
Material：EPDM Color：gray
・Wiring, operation, maintenance, and inspections of these products must be performed by personnel with specialized knowledge and skills in the installation of explosion-proof electrical equipment and related regulations.
・For installations in hazardous locations, please check the applicable hazardous area classification. The hazardous areas in which products may be installed will vary depending on the specific model.
・Please note that specfications, dimensions, etc., are subject to change without prior notice.For installation of explosion-proof electrical equipment
Prior to installed of explosion-proof electrical equipments, careful study should be made on the following recommendations.
1. To prevent explosions or files caused by the electrical equipments, every effort should be made, as a prerequisite, to minimize possible danger of explosion at a location where they are to be installed.
2. The electrical equipments should be installed at a location with a minimum posibility of explosion. In case, however, they are unavoidably installed at a hazardous location where explosion is expected, it should be limited to a minimum extent.
3. The explosion-proof electrical equipments to be installed should be the products that have been proved to fully meet he requirements.
Classofication of danger class
Study the sorts of inflammable gas or steam present at a location where the electrical equipments are to be installed in order to determine the explosion class and the firing degree. Then, determine the hazardous locations according to the degree of danger of the locations where the electrical equipments are to be installed. The explosion-proof electrical equipments may be selected on the basis of the determination of explosion class, firing degree and hazardous locations.
The danger class of explosive gas is determined by the firing degree and explosion class.Firing degree Firing point G1
G2
G3
G4
G5over 450 ℃
over 300 ℃ up to 450 ℃
over 200 ℃ up to 300 ℃
over 135 ℃ up to 200 ℃
over 100 ℃ up to 135 ℃
Explosion class Minimum clearance which permits flame running at 25 mm. 1
2
3over 0.6 mm
over 0.4 mm up to 0.6 mm
up to 0.4 mm
Classofication example of explosive gases
G1 G2 G3 G4 G5 1 Ammonia
Carbon monoxide
Acetic acid
Propane
MethaneEthanole
Amyl Acetate-iso
1-Buthanole
Butane
Acetic anhydrideGasoline
HexaneAcetaldehyde
Ethylether2 Coal gas Ethylene
Ethylene oxide3 Water gas
HydrogenAcetylene
Classification of hazardous locations
The areas of possible danger or to be dangerous atmosphere are classfield into class 0, class 1 and class 2 depending upon the dangerous time and frequency of occurrence of danger.
Class 0･･･Where dangerous density of explosive gas continues or is held for a long time above the lower limit of an explosion.
Class 1･･･Where a dangerous atmosphere is expected to be present under normal state.
Class 2･･･Where a dangerous atmosphere is expected to be present under abnormal state.
Type of explosion-proof construction
The explosion-proof construction is designed to protect the equipment in use at a hazardous location and can be divided into many different types including pressure-resisting explosion-proof(d), oil-immersed explosion-proof(o), internal pressure-resisting explosion-proof(f), increased safety explosion-proof(e), substantial safety explosion-proof(i), special explosion-proof(s) and other varying types. Out of them, the following construction types are employed in the explosion-proof electrical equipment introduced in this paper.
※ Pressure-resisting explosion-proof type(d)
This is of a totally enclosed construction, and should an explosion take place inside the enclosure, the enclosure resists the resultant pressure eliminating a danger of igniting an explosive gas outside.
※ Increased safety explosion-proof type(e)
This is of the construction which is particularly provided with increased safety on its construction or temperature rise, in order to prevent sparking arcing and overheating on those parts which should not essentially generate them.Product category- TOP
- Products
- Explosion-Proof and Corrosion-Resistant Control Equipment
- Explosion-Proof Control Switches(Aluminum Alloy Model)
