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Formularz  Nr F –K400037/8B

 

CATALOGUE CARD 

K4-15-132 

ISSUE

  

  2 

DFME 

DAMEL S.A.

MINING INDUCTION MOTORS 

2SG8 420M-4 

 

PAGE

      

 1/1 

 

File No: 132 kW, 2SG8 420M-4.doc/2005 
Translated by: PTU -DAMAR- Sosnowiec 
 
 

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) . 

 
 
 
 

background image

 

 

Formularz  Nr F –K400037/8B

 

CATALOGUE CARD 

K4-15-132 

ISSUE

  

  2 

DFME 

DAMEL S.A.

MINING INDUCTION MOTORS 

2SG8 420M-4 

 

PAGE

      

 2/2 

 

File No: 132 kW, 2SG8 420M-4.doc/2005 
Translated by: PTU -DAMAR- Sosnowiec 
 
 

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   P

 [kW] 

132 

Current at rated voltage 

I

N

[A]  380V 

I

N

[A]  500V 

I

N

[A]  550V 

I

N

[A]  660V 

I

N

[A] 1000V 

I

N

[A] 1140V

 

250 
190 
173 
144 

95 
83 

Power coefficient  cos

φ 

0,85 

Efficiency  

η  

[%] 94 

Rotational speed  n 

[1/min] 

1478 

Rated moment   M

N

 [Nm] 

853 

Multiplicity of start-up current    I

k

/I

N

  

6,6 

Multiplicity of start-up moment   M

K

/M

 2,4 

Multiplicity of critical moment    M

max

/M

N

  

2,5 

Min. flow of cooling water  

[dm

3

/min] 12 

Mode of operation 

 

S1;  

S4-60%, 40c/h J

ext

/J

M

=1   

Rotor moment of inertia                      J

M

 kgm

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. 

J

ext

 – inertia moment of motor load referred to the shaft of motor. 

 

 

 
Fig .1 Diagram of motor connections 
 

Posistor PTC sensors 

Bimetal NC sensors 

Bearings 

Winding 

Winding 

background image

 

 

Formularz  Nr F –K400037/8B

 

CATALOGUE CARD 

K4-15-132 

ISSUE

  

  2 

DFME 

DAMEL S.A.

MINING INDUCTION MOTORS 

2SG8 420M-4 

 

PAGE

      

 3/3 

 

File No: 132 kW, 2SG8 420M-4.doc/2005 
Translated by: PTU -DAMAR- Sosnowiec 
 
 

 
 

 

 
Fig. 2 Diagram of cooling system  

 

 

 

Fig. 3. Overall and assembly dimensions of motors 

Venting 

Water inlet 

Water outlet 

VERSION

Type of motor 

View U

View W 

Stop fixing 

strip 

Water outlet

Water inlet G1/2 

Detail b 

Venting G1 1/2 

Water inlet G 1/2

Water inlet G1/2 

Version A 

Version B 

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Formularz  Nr F –K400037/8B

 

CATALOGUE CARD 

K4-15-132 

ISSUE

  

  2 

DFME 

DAMEL S.A.

MINING INDUCTION MOTORS 

2SG8 420M-4 

 

PAGE

      

 4/4 

 

File No: 132 kW, 2SG8 420M-4.doc/2005 
Translated by: PTU -DAMAR- Sosnowiec 
 
 

CONDITIONS OF OPERATION AND APPLICATION 

•  Ambient temperature 

        0÷40

o

•  Relative humidity at temperature of  35

o

        97÷100% 

•  Height above the sea level 

       ≤ 1000m 

•  Degree of corrosive aggressiveness C acc. to  PN-71/H 04651 
•  Admissible inclination of the shaft axis to level  

       -40

 o

/ +80

0

  

•  Parameters  of cooling water at inlet of cooling system 

maximum temperature  

      +40

o

maximum static pressure  

       3MPa 

•  Supply voltage                                                             

(0,95÷1,05)U

N

 

•  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  4mm

2

•  Leading the armour conductors to terminal box through cable inlets selected according to the outer 

diameter of conductors acc. to table 2. 

  

 

 

 

 

 

 

 

 

     Table 

Type of inlet 

The range of diameters of  conductors for cable inlets 

54235.02… 

lub 54345.02… 

34 ÷ 38  36 ÷ 40 40 ÷ 44 41 ÷ 46 44 ÷ 49 48 ÷ 53 

52-57 

55-61 

60-65

 

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 

characteristic of  motor  2 

Primary execution 

3

Execution against order 

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 + reinforced wound insulation  

thermal 

protection – type of sensors 

posistor PTC 

 bimetal NC 

posistor PTC 

 bimetal NC or other  

Temperature control 

– thermometric elements 

- - 

cable inlets 

54235.2-44 box „d” 1140V  

or 54345.2-44 box  „e” 1000V 

 54235.2-…  

or 54345.2-… 

with selected gasket – see table 2 

final link  

of control circuit 

8SX 9006-0AA00 (diode + 

resistor) prod. Bartec.  

8SX 9006-0AA00 (diode + resistor) 

prod. Bartec.  

climatic execution 

for temperate climate 

for  tropical climate TH or TA 

constructional characteristic 

other than above mentioned 

– 

acc. to settlements, it can require 

acceptance of  the unit certifying  

the product 

background image

 

 

Formularz  Nr F –K400037/8B

 

CATALOGUE CARD 

K4-15-132 

ISSUE

  

  2 

DFME 

DAMEL S.A.

MINING INDUCTION MOTORS 

2SG8 420M-4 

 

PAGE

      

 5/5 

 

File No: 132 kW, 2SG8 420M-4.doc/2005 
Translated by: PTU -DAMAR- Sosnowiec 
 
 

 

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. 

 

Dąbrowska Fabryka Maszyn Elektrycznych DAMEL S. A. 

Aleja Józefa Piłsudskiego 2, 41-300 Dąbrowa Górnicza, POLSKA, tel: (32) 262-32-30 do 39  

Faks (32) 264-34-26, 264-10-12, http: www.damel.com.pl, email: office@damel.com.pl  

 

Opracowanie: „DAMEL” – TK/LP/10/2004