Translation from Polish
Form No. F  K400037/8B
CATALOGUE CARD K4-15-169
DFME
EDITION 1
INDUCTION MINING MOTORS
DAMEL S.A.
2SGS 355L-8/4
PAGE 1/6
APPLICATION
The two-speed motors of 2SGS type and mechanical series of 355 are intended for driving mining machines and
equipment, especially for belt conveyors and scraper belt conveyors.
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 squirrel-cage rotor, with two independent windings: for synchronous speed of
750 r.p.m.  so called  slow speed (2p=8) and for synchronous speed of 1500 r.p.m.  so called  fast speed
(2p=4).
" Explosion-proof construction with flame-proof casing of motor  d - mark I M2 Exd I, equipment ranked
as group I of category M2 according to Directive 94/9/CE.
" Degree of protection IP 55 acc. to PN-EN 60034-5:2004.
" The motors are cooled by water flowing through the water channels in body and a channel of bearing s disk
P connected in series with the body.
" Form of execution: flanged execution  IM 3001 (B5); flanged FF740.
" Basic voltage execution: 1000; 1140V  50Hz .
After settlement it is possible to execute the motors for other voltage and frequency of 60Hz.
" Class of insulation: class H  basic execution, class H + reinforced wound insulation  execution against
order.
" Thermal protection of motors: bimetal sensors (NC) or posistor PTC sensors in winding and bearing nodes 
two identical circuits: basic and stand-by.
" Temperature control: thermometric resistors Pt 100 in winding and bearing nodes (execution against order).
" Two-inlet terminal box with one or two cable inlets with rubber gaskets selected to the outer diameters of
conductors, type Wk3u/d... produced by DAMEL (Catalogue Card K4-15-136).
" The motor is equipped with the final link of protection conductor continuity control circuit, mounted in the
terminal box  primary execution: the final link CK-OA.
After settlement the assembly of final unit CK of other type is possible (e.g. diode+resistor, reverse polarity,
etc.) produced by DAMEL (Catalogue card K4-15-121).
" Feeding and start-up: the motors are intended for feeding from the 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/CE (ATEX), European harmonized norms and domestic norms:
- norms for electrical equipment in areas of explosion hazard:
- EN 60079-0:2004  Polish equivalent PN-EN 60079-0:2004(U),
- EN 60079-1:2004  Polish equivalent PN- EN 60079-1:2004(U),
- EN 60079-7:2003  Polish equivalent PN-EN 60079-7:2004(U),
- norms for rotational electric machines:
- EN 60034-1:2004  Polish equivalent PN-EN 60034-1:2005(U)
- domestic norms for induction motors for mining machines:
- PN G-38010:1997 (domestic norm).
CERTIFICATES
The motors have the certificates:
- certificate CE (ATEX) issued by notified Testing Station GIG KD  BARBARA , valid on the area of
European Union.
File no: 125 250 kW, 2SGS 355L-8 4.doc/2006
Translated by: PTU -DAMAR- Sosnowiec
Translation from Polish
Form No. F  K400037/8B
CATALOGUE CARD K4-15-169
DFME
EDITION 1
INDUCTION MINING MOTORS
DAMEL S.A.
2SGS 355L-8/4
PAGE 2/6
TECHNICAL DATA
Table 1
Parameters 2SGS 355L-8/4
Rated power PN [kW] 125/250
IN[A] 1000V 105/172
Current at rated voltage
IN[A] 1140V 92/151
0,74/0,88
Power factor cosÕ
[%] 93/95,5
Efficiency ·
Rotational speed n [min-1] 739/1485
Rated moment MN [Nm] 1615/1608
Multiplicity of start-up current IK/IN 5,1/6,8
Multiplicity of start-up moment MK/MN 2,7/2,5
Multiplicity of critical moment MMax/MN 2,7/2,6
Minimal flow of cooling water [dm3/min] 12
S1;
Mode of operation
S4-60%, 75c/h, Jext/JM=0,6
Rotor moment of inertia JM [kgm2] 13
Mass of motor [kg] 2400
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 axis of shaft .
File no: 125 250 kW, 2SGS 355L-8 4.doc/2006
Translated by: PTU -DAMAR- Sosnowiec
Translation from Polish
Form No. F  K400037/8B
CATALOGUE CARD K4-15-169
DFME
EDITION 1
INDUCTION MINING MOTORS
DAMEL S.A.
2SGS 355L-8/4
PAGE 3/6
bearing
winding
NC bimetals
or PTC
posistors
version without thermometric resistors Pt 100
NC bimetals
or PTC
posistors
thermometric resistors
Pt 100
version with thermometric resistors Pt 100
Fig. 1 Diagram of motor connections
- winding, protective terminals, thermal protection.
High pressure hose
Water outlet
Water inlet
Body Disk P
Fig. 2 Diagram of cooling system
File no: 125 250 kW, 2SGS 355L-8 4.doc/2006
Translated by: PTU -DAMAR- Sosnowiec
Translation from Polish
Form No. F  K400037/8B
CATALOGUE CARD K4-15-169
DFME
EDITION 1
INDUCTION MINING MOTORS
DAMEL S.A.
2SGS 355L-8/4
PAGE 4/6
Water inlet
Water outlet
Centre hole
M20
View W
View P
Cable inlet
or stopper
Cable inlet
Water inlet
Water outlet
Table 2
Flange Diagram
The shaft of Cable inlets
Form of
Type of
of cooling
(basic
acc. to
executio
motor system
execution)
acc. to
Fig. 2
Fig. 3 Assembly and overall dimensions of motors.
File no: 125 250 kW, 2SGS 355L-8 4.doc/2006
Translated by: PTU -DAMAR- Sosnowiec
Translation from Polish
Form No. F  K400037/8B
CATALOGUE CARD K4-15-169
DFME
EDITION 1
INDUCTION MINING MOTORS
DAMEL S.A.
2SGS 355L-8/4
PAGE 5/6
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 < 30 o
" Parameters of cooling water at inlet of cooling system
- maximum temperature +30oC
- 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 auxiliary circuits of temperature sensors and temperature control thermometric elements 
auxiliary cores of feeder armour conductor or multicore armoured (control) conductor with section area of
wires up to 4mm2.
When connecting the motor with one conductor the other inlet hole of the terminal box is stopped FLP by
stopper Zk3u.
" Leading the flexible conductors to terminal box through cable inlets selected according to the outer
diameter of conductors acc. to table 3.
Table 3
Type of inlet Conductor The range of diameters of conductors for cable inlets
Wk3u/d80 40÷44 41÷46 44÷49 48÷53 52÷57
Feeding
Wk3u/d100 55÷61 59÷65 62÷68 68÷74
Wk3u/d47 Control 19÷21 20÷24 22÷26
In case the Orderer does not state the type of cable inlet (outer diameter of conductor ) the motor is delivered
with cable inlet and stopper determined acc. to Table 2.
OFFER FOR DELIVERIES OF MOTORS
The producer offers motors in primary execution and in options executed against the order from offeree
(additional, diversified equipment).
Table 4
Constructional Primary execution Execution against order
characteristic of motor
1 2 3
rated voltage 1000; 1140V other voltage
frequency 50Hz 60Hz
form of execution Flanged IM 3001(B5) 
class of insulation H H + reinforced wound insulation
thermal protection
bimetal NC posistor PTC
 type of sensors
Temperature control
 thermometric resistors Pt100
- thermometric elements
two cable inlets Wk3u/d80& one or two cable inlets Wk3u
cable inlets
-see table 2 - see table 3, or conductor connection
CK & appointed by Orderer
final link of control circuit
CK-0A
(acc. to catalogue card K4-15-121)
climatic execution for temperate climate for tropical climate TH or TA
acc. to settlements, it can require
constructional characteristic
 acceptance of the unit certifying the
other than above mentioned
product
The following items are included to the delivered motors by producer:
- service manual,
- declaration of conformity CE.
File no: 125 250 kW, 2SGS 355L-8 4.doc/2006
Translated by: PTU -DAMAR- Sosnowiec
Translation from Polish
Form No. F  K400037/8B
CATALOGUE CARD K4-15-169
DFME
EDITION 1
INDUCTION MINING MOTORS
DAMEL S.A.
2SGS 355L-8/4
PAGE 6/6
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 4 column 2 or execution against order, for which required
equipment and constructional characteristic should be determined acc. to table 4 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 of motors,
- 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]
Elaboration:  DAMEL  TK/PG/01/2006
File no: 125 250 kW, 2SGS 355L-8 4.doc/2006
Translated by: PTU -DAMAR- Sosnowiec