Installation, operation and maintenance instructions
High voltage flameproof motors for explosive atmosphere
AMD Rg 355-400-450-500
General information about the installation and safety operation
Issued by: MOLM
Sheet No.
3AAM101025 E
Rev. C
01.2023
Page 2 of 10
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1.2.2
MOTORS’ SPECIFIC DOCUMENTATION
We recommend to carefully examine all the specific
technical documentation of the motor before the
start-up of the erection and commissioning
operations.
The “Instruction Manual” is shipped together with
every motor and is contained within a transparent
envelope.
Every motor is moreover provided with at least the
following documents:
1. Outline drawing, on which the following
information can be found (as far as applicable):
Data for the electrical and mechanical
interfaces.
Data for the foundations dimensioning.
Weight of the motor.
Provided accessories and instrumentation.
Loads on the foundations.
2. Drawing of the electrical connection wiring for
the main line and the auxiliary circuits.
Further data can be supplied on request.
1.2.3
DOCUMENTATION RELATED TO
STARTING SYSTEMS, SPEED CONTROL,
ETC.
This Manual doesn’t contain any information related
to ancillary equipment like special starting systems,
speed control and others (i.e., hydraulics joints,
frequency converters etc.). In particular this manual
doesn’t contain their connection drawings, cable
characteristics,
operation
and
maintenance
instructions etc.
The information for the above subjects have to be
obtained from the applicable documentation and
specific technical manuals.
1.2.4
APPLICABILITY OF THIS MANUAL
This manual applies to squirrel cage asynchronous
motors
type
AMD
355-400-450-500..R….g.
(commonly defined AMD Rg 355-500) made by
and designed for use in potentially explosive
atmosphere. Motors are designed and manufactured
to operate in a potentially explosive atmosphere with
the following protection modes:
Ex db: Explosion proof motor coupled with an
Ex db main terminal box type, suitable to
operate in a potentially explosive atmosphere
with presence of gases (group IIB or IIC), with a
temperature class of T3, T4 or T5. Alternatively,
they can operate in mines full of firedamp,
typical of Group I applications.
Ex db eb: Explosion proof motor coupled with
an Ex eb main terminal box type, suit-able to
operate in a potentially explosive atmosphere
with presence of gases (group IIB or IIC), with a
temperature class of T3, T4 or T5
Ex tb: Motor with enclosure protected by an
environment with conductive dusts typ-ical of
group IIIC
Ex tc: Motor with enclosure protected by an
environment with non-conductive dusts typical
of group IIIB
The products are designed to respect the
requirements stated in the Standards IEC 60079-0,
IEC 60079-1, IEC 60079-7, IEC 60079-31 and to
satisfy the Essential Health and Safety Requirements
of ATEX Directive 2014/34/EU, through the respect
of requirements listed in the harmonized Standards
EN 60079-0, EN 60079-1, EN 60079-7, EN 60079-
31.
REMARK! Information on components and
accessories, required by Customer and not
provided on production machines, may not be
included in this manual.
Be careful, to this aim, at the technical
documentation supplied with the specific motor, in
particular at the outline drawing.
Careful study of this Manual is essential to ensure a
good operation and a long lifetime of the machine.
The Manual is intended for users having sufficient
basic technical experience in the erection,
commissioning and operation of electrical machinery.
1.3
MACHINE IDENTIFICATION AND
CHARACTERISTICS
1.3.1
SERIAL NUMBER
Every motor is identified by means of the serial
number. The number is always engraved on the
nameplate and is moreover indelibly stamped on the
frame or on increased thickness cooling rib where
frame
lifting points are located
.
1.3.2
NAMEPLATES
The
motor
nameplate
contains
the
entire
characteristic parameters and values required for the
machine identification and the operation of the motor.
The nameplate is fixed on the motor frame.
The content of the nameplate is in accordance with
the data list required by the IEC/EN 60034-1
Standard.
