MINING FREQUENCY CONVERTER STATION of MFCStype for 1000...1250 kWA

MINING FREQUENCY CONVERTER STATION of MFCStype for 1000...1250 kWA

MFCS
-
Mine frequency-converterstation
XXXX
/
Rated power, kW
XX
-
Voltage class of HV transformer, kV
XX
-
Number of connected motors
X
-
Diagrams and groups of HV/LV winding connections
UHL5
Climatic option according to GOST 15150-69

Specifications

Основные параметры ЧПСШ:

Блок стилей "STYLE"
Parameter MFCS
1000-6(10)
MFCS
1250-6(10)
Parameters of HVS and power transformer
1 Rated power, kWA 1000 1250
2 Rated frequency, Hz 50
3 Rated voltage on HV side, V 6000 ± 5%
4 Rated HV current, A 96,2 120,3
5 Diagram and groupsof connection for power transformer windings Y / Y / △ -0 / 11 
△ / Y / △ -11 / 0
Y / Y / △ -0 / 11
6 Number of phases on HV side 3
7 Phase shift between the secondary windings 30 electrical angles
8 Rated voltage on LV-Y/LV- ? side, V 690/690
9 Voltage adjustment range on adjustment bends panel, % ± 5
10 Rated current LV1/ LV2,A 418/418 523/523
11 Short- circuit voltage, % (not more) 5 5,5
12 No-load current, % 1,0 0,95
13 Power transformer losses, W S.C. at temperature of windings 115 °C 4350 5450
no-load running 2050 3050
14 Insulation class of power transformer windings according to GOST 8865-93 Н
Parameters of the frequency-converter device
1 Power of connected electric motor for conveyor driving head, kW 400 500
2 Number of connected electric motors for conveyor driving head, pcs 2
3 Adjustable motor torque, % from 0 to 100
4 Adjustment spin-rate control of electric motors, % from 10 up to 100
5 Adjustment current regulation of electric motors, % from 10 up to 100
The parameters of control circuits, alarm systems, local lighting and conveyor auxiliary engines
1 Supply voltage of internal fans for air cooling modules ofrectifier / inverters and pump of the liquid cooling internal contour, V
220
2 Voltage of control and alarm circuits, V 24, 27, 127, 220
3 Voltage of external lighting circuits, V 127 or 220
4 Power of external lighting lamps connected, kW 0,1
5 External supply voltage 24 V (optional), V 24
6 Power of equipment connected to external power supply circuit 24 V, kW, not more than 0,01
7 Power of the connected electro-hydro pushersfor drive brake, kW, no more 2
8 Number of connected electro-hydro pushersfor drive brake, kW, pcs 2
General
1 Overall dimensions of the station without heat exchanger (length, width, height), mm 6600х1400х1800
2 Weight of MFCSstation without external heat exchanger, kg, not more than 15000

Complectation

Frequency-converter stations of MFCS type are intended for stepless variable electric regulation of speed and torque of the single - or dual-motor drive of the belt conveyor and supply of voltage to all auxiliary devices of station and the conveyor in underground mine workings, gaseous- and -dusty hazardous mines as per requirements of the safety regulations for coal mines and the Operation manuals.

The station is made the explosion-proof, with spark-safe remote control circuits, and has explosion protection marking PB Exdlia op is]ia | X. The shell structure provides ingress IP54 protection according to GOST 14254-96.

Operating conditions:

  • ambientairtemperature +1...+35°C;
  • relative airhumidity upto 100% attemperature +35°C;
  • absence of sharpjerks and shocks;
  • dust contentin ambient airnot exceeding 1000 mg/M3;
  • working positionin space is horizontal, the deviation from working position upto 15 degreesin any directionisallowed.

Reliability indicators:

  • average time between failures - min 8000 h;
  • established resource before first major overhaul - not less than 65000 h;
  • average total service life - not less than 15 years;
  • mean recovery time - no more than 2 hours.