NZ
- 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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- Products
- Explosion-Proof and Corrosion-Resistant Control Equipment
- Explosion-Proof Circuit Breaker
PRODUCTS
Explosion-Proof Circuit Breaker
The explosion-proof circuit breaker containing TOGAMI's Molded Case Circuit Breaker is recommended to be used as a main switch for line protection.
Model type
Type Case model Hazardous location Explosion-proof construction NZB Upper and lower terminal boxes type Applicable in hazardous locations class 1 and 2 d2G4 NZR Lower terminal box type Applicable in hazardous locations class 1 and 2 d2G4 NZL Multi-unit type Applicable in hazardous locations class 2 de2G4 Specifications
Type M.C.C.B Rated current（A)
240/440 VBasic capacity(kA） Standard hub size（PF) 240 V 440 V power load NZL NZR NZB 8-A050 50 50 15 7.5 1 1/4 1 1/4 8-A100 100 100 30 10 1 1/2 1 1/2 9-200 225 225 85 50 2 1/2 2 1/2 9-400 400 400 ※ ※ 3 3 2-A050 50 50 15 7.5 1 1/4 1 1/4 2-A100 100 100 30 10 1 1/2 1 1/2 4-200 225 225 85 50 2 1/2 2 1/2 4-400 400 400 ※ ※ 3 3 6-600 600 600 ※ ※ 4 4 ＜Common specifications＞
1.Material･･･The molded case and cover: Steel type
2.Outside breaker with handle
3.The molded case circuit breaker can be controlled by means of an external operating handle and handle can be locked at the OFF-position by the use of locking pin.
4.The service entrance is flameproof threaded joint steel conduit leading type.
5.The equipment name plate is provided. Name indication is made on an acryl plate in black letters on a white field.
6.Painting Color:
Internal and external surfaces of enclosures: Munsell No.7.5BG6/1.5
The molded case circuit breaker operating handle: Munsell No.N1.5
※Please contact us regarding 400 AF and 600 AF.Dimensions
Type Enclosure type No. Dimension（mm） Weight（kg) A B C D E F G P NZB 8 959 299 324 750 240 108 - M12 68 9 1565 461 364 1100 350 234 - M20 190 2 1033 355 330 700 280 153 - M16 105 4 1603 491 364 1200 380 203 - M20 220 NZR 8 695 299 324 500 240 84 101 M12 47 9 1142 461 364 800 350 164 126 M20 160 2 791 355 330 500 280 117 97 M16 75 4 1240 491 364 900 380 140 126 M20 200 NZL 8 1054 299 349 650 240 350 - M12 60 9 1416 461 364 650 350 350 - M20 165 2 1141 355 355 650 280 350 - M16 90 4 1535 491 364 650 380 350 - M20 210 6 1876 570 478 1100 480 350 - M20 400
・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 Circuit Breaker
