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At Dietz we
specialize in motors suitable for use in hazardous locations. Our
experts can assist you in providing the correct motors for any hazardous
area. We  have
years of experience in specifying motors to meet the requirements
of the national fire protection association and certified by U.L.,
C.S.A. We have extensive experience supplying hazardous area motors
for all U.S., and international standards, whether they be U.L.,
CSA, Cenelec/Euronorm (BASEEFA, PTB). We stock standard NEMA Class
I, Group D, Division 1, explosion proof motors up to 100HP. We can
also supply Division 1 motors to Class I (Gases, Vapors) Groups
C&D, and Class II (Combustable Dusts) Groups E, F, & G motors that
meet the requirements of the National Electric Code NFPA 70 501-(b)
1999 for operation in Class I, Division 2 locations are also available.
In addition
to standard explosion proof motors we also offer motors suitable
for use in Class I, Group B, Division 1
hazardous locations. These motors are designed to operate in areas
where Hydrogen is present (or gases or vapors equivalent in hazard
to hydrogen gas). We can offer these motors in all NEMA frame sizes
¼ - 100HP in foot and flange mountings.
North
American standards for explosion proof motors operating in Class
I, Group B, Division 1, hazardous locations.
We also have
extensive expertise in supplying flameproof motors to all international
standards certified by CENELEC/EURONORM and approved by BASEEFA,
PTB, NSW and others.
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Dietz can offer
motors in both NEMA and IEC frame sizes, which comply with the standards
of all European countries in accordance with(EN 50 014 and EN 50
018) for explosive groups and temperature classes.
Hydrogen is
classified under Apparatus gas Group IIC, Zone 1. Our standard motor
versions correspond to the highest explosion group IIC, and temperature
class T4, which also cover all lower explosion groups and temperature
classes. Type EExde IIC T4 is certified to PTB (Phsysikalisch-Technische
Bundesansaldt to German standard VDE 0171/2-61).
This type of
motor is less expensive than the motors supplied with a type “X”
purging system.
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