Formularz Nr F  K400037/8B
CATALOGUE CARD K4-15-132
DFME
ISSUE 2
MINING INDUCTION MOTORS
DAMEL S.A.
2SG8 420M-4
PAGE 1/1
APPLICATION
The one-speed motors of 3SG8 420M-4 type are motors intended for driving mining machines and
equipment, especially for driving getting unit of heading machines.
The motors can be used in underground parts of mines and surface installations of the mines, where
there are possible explosion conditions for methane and/ or coal dust.
There is also possible to operate the motors in the surroundings where the explosion-proof equipment is
not required.
CHARACTERISTIC FEATURES OF MOTORS
" Induction 3-phase motors with welded squirrel-cage rotor,
" Explosion-proof construction with flame-proof casing of motor  d - mark I M2 EExd I,
equipment ranked as group I of category M2 according to Directive 94/9/EC,
" The degree of protection IP 55 acc. to PN-EN 60034-5:2002U,
" The motors are cooled by water flowing through the water jacket of body,
" The form of execution: special flanged execution  IM3201,
" Primary voltage executions:
380; 500; 550; 660; 1000; 1140V  50Hz;
After settlement it is possible to execute the motors for other voltage and frequency of 50/60Hz
" Class of insulation: class H  primary execution, class H reinforced by wound insulation 
execution against order,
" Thermal protection of motors: or posistor PTC sensors -in winding of stator and in bearing nodes 
two identical circuits: basic and stand-by and bimetal sensors NC in winding  two circuits,
" One-inlet terminal box equipped with one or two cable inlets with rubber gaskets selected to the
outer diameters of conductors, type 54235.2& . and 54345.02& produced by GOTHE&Co.
" The motor is equipped with the final link of protection conductor continuity control circuit, mounted
in the terminal box  primary execution: the link 8SX9006-0AA00 (diode + resistor) produced by
BARTEC
" Feeding and start-up: the motors are intended for feeding from power network  start-up by direct
switching on the voltage.
" The motors adapted for work in temperate climate; after settlement the adaptation for work in
tropical climate TA or TH is possible.
COMPATIBILITY WITH REQUIREMENTS OF STANDARDS
The motors meet requirements of Directive 94/9/EC (ATEX),
European harmonized standards and domestic norms:
- norms for electrical equipment in areas of explosion hazard:
- EN 50014:1997+A1:1999+A2:1999  Polish equivalent PN-EN 50014:2002U,
- EN 50018:2000+A1:2002  Polish equivalent PN-EN 50018:2002U,
- EN 50019:2000  Polish equivalent PN-EN 50019:2002U,
- norms for rotational electric machines:
- EN 60034-1:1998+A1:1998+A2:1999+AC:2000  Polish equivalent PN-EN 60034-1:2001
- domestic norms for induction motors for mining machines:
PN G-38010:1997 (domestic standard) .
File No: 132 kW, 2SG8 420M-4.doc/2005
Translated by: PTU -DAMAR- Sosnowiec
Formularz Nr F  K400037/8B
CATALOGUE CARD K4-15-132
DFME
ISSUE 2
MINING INDUCTION MOTORS
DAMEL S.A.
2SG8 420M-4
PAGE 2/2
CERTIFICATES
The motors have the certificates:
- certificate EC (ATEX ) issued by notified Testing Station FTZÚ, valid on the area of European
Union.
TECHNICAL DATA
Table 1
Parameters 2SG8 420M-4
Rated power PN [kW] 132
Current at rated voltage IN[A] 380V 250
IN[A] 500V 190
IN[A] 550V 173
IN[A] 660V 144
IN[A] 1000V 95
IN[A] 1140V 83
0,85
Power coefficient cosĆ
[%] 94
Efficiency ·
Rotational speed n [1/min] 1478
Rated moment MN [Nm] 853
Multiplicity of start-up current Ik/IN 6,6
Multiplicity of start-up moment MK/MN 2,4
Multiplicity of critical moment Mmax/MN 2,5
Min. flow of cooling water [dm3/min] 12
Mode of operation S1;
S4-60%, 40c/h Jext/JM=1
Rotor moment of inertia JM kgm2 2
Mass of motor kg 1300
1. The parameters of motor: rated current, efficiency, power factor, rotational speed and rated
moment relate to rated load at rated feeding conditions  50Hz.
2. Multiplicities of start-up current , start-up moment and critical moment refer to direct connection
of the motor to the supply network (mains).
3. Jext  inertia moment of motor load referred to the shaft of motor.
Bearings Winding
Posistor PTC sensors
Winding
Bimetal NC sensors
Fig .1 Diagram of motor connections
File No: 132 kW, 2SG8 420M-4.doc/2005
Translated by: PTU -DAMAR- Sosnowiec
Formularz Nr F  K400037/8B
CATALOGUE CARD K4-15-132
DFME
ISSUE 2
MINING INDUCTION MOTORS
DAMEL S.A.
2SG8 420M-4
PAGE 3/3
Water inlet
Venting
Water outlet
Fig. 2 Diagram of cooling system
Stop fixing
strip
Water outlet
Detail b
Water inlet G1/2
View W
View U
Venting G1 1/2
Water inlet G 1/2
Water inlet G1/2
Version A
Version B
Type of motor
VERSION
Fig. 3. Overall and assembly dimensions of motors
File No: 132 kW, 2SG8 420M-4.doc/2005
Translated by: PTU -DAMAR- Sosnowiec
Formularz Nr F  K400037/8B
CATALOGUE CARD K4-15-132
DFME
ISSUE 2
MINING INDUCTION MOTORS
DAMEL S.A.
2SG8 420M-4
PAGE 4/4
CONDITIONS OF OPERATION AND APPLICATION
" Ambient temperature 0÷40oC
" Relative humidity at temperature of 35oC 97÷100%
" Height above the sea level d" 1000m
" Degree of corrosive aggressiveness C acc. to PN-71/H 04651
" Admissible inclination of the shaft axis to level -40 o/ +800
" Parameters of cooling water at inlet of cooling system
- maximum temperature +40oC
- maximum static pressure 3MPa
" Supply voltage
(0,95÷1,05)UN
" Electrical terminal
Power supply connection  mining armour conductor with rubber armour and insulation, multicore,
screened for voltage of 0,6/1kV, with section area of cores selected to operating conditions.
Connection of circuits of temperature sensors and temperature control thermometric elements 
auxiliary cores of feeder cable or multicore armoured (control) pilot wire with section area of wires up
to 4mm2.
" Leading the armour conductors to terminal box through cable inlets selected according to the outer
diameter of conductors acc. to table 2.
Table 2
Type of inlet The range of diameters of conductors for cable inlets
54235.02&
34 ÷ 38 36 ÷ 40 40 ÷ 44 41 ÷ 46 44 ÷ 49 48 ÷ 53 52-57 55-61 60-65
lub 54345.02&
In case the Orderer does not state the type of cable inlet together with outer diameter of conductor the
motor is delivered with cable inlet determined acc. to Table 3, column 2.
OFFER FOR DELIVERIES OF MOTORS
The producer offers motors in primary execution and in options executed against the order from
customer (additional, diversified equipment).
Table 3
Constructional Primary execution Execution against order
1 characteristic of motor 2 3
rated voltage 1000; 1140V other voltage
frequency 50Hz 50/60Hz
form of execution Version A acc. to Drwg. 3 Version B  acc. to Drwg. 3
class of insulation H H + reinforced wound insulation
thermal posistor PTC posistor PTC
protection  type of sensors bimetal NC bimetal NC or other
Temperature control
- -
 thermometric elements
54235.2-&
54235.2-44 box  d 1140V
cable inlets or 54345.2-&
or 54345.2-44 box  e 1000V
with selected gasket  see table 2
final link 8SX 9006-0AA00 (diode + 8SX 9006-0AA00 (diode + resistor)
of control circuit resistor) prod. Bartec. prod. Bartec.
climatic execution for temperate climate for tropical climate TH or TA
acc. to settlements, it can require
constructional characteristic
 acceptance of the unit certifying
other than above mentioned
the product
File No: 132 kW, 2SG8 420M-4.doc/2005
Translated by: PTU -DAMAR- Sosnowiec
Formularz Nr F  K400037/8B
CATALOGUE CARD K4-15-132
DFME
ISSUE 2
MINING INDUCTION MOTORS
DAMEL S.A.
2SG8 420M-4
PAGE 5/5
The following items are included to the delivered motor:
- running-technical documentation ( RTD - Service Manual of the motor).
- declaration of conformity EC.
ORDERING PROCEDURE
The following data should be stated in the order directed to the
address of manufacturer given below:
- type of motor, power
- rated voltage and frequency
- motor execution: preliminary  see table 3 column 2 or execution against order, for which required
equipment and constructional characteristic should be determined acc. to table 3 column 3.
When ordering we recommend to fill up the questionnaire  Statement of technical data of the motor... 
accessible at internet (web) sites and in Marketing Department of DFME DAMEL.
The producer offers additionally:
- guarantee and after guarantee service,
- delivery of spare parts,
- training of employees in the range of correct maintenance and operating the motor.
Producer reserves the right to implement to the motor changes resulting from technical progress.
DÄ…browska Fabryka Maszyn Elektrycznych DAMEL S. A.
Aleja Józefa Piłsudskiego 2, 41-300 Dąbrowa Górnicza, POLSKA, tel: [phone] do 39
Faks (32) 264-34-26, 264-10-12, http: www.damel.com.pl, email: [e-mail]
Opracowanie:  DAMEL  TK/LP/10/2004
File No: 132 kW, 2SG8 420M-4.doc/2005
Translated by: PTU -DAMAR- Sosnowiec