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Tbilisi, Georgia, 0141





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New developments

Static converter DCB1.0

SDB specialists in collaboration with Czech company «Di-Elcom» elaborated a static converter. A regenerative braking converter provides:

  • Braking effort control by means of the preset algorithm, with noncontacting automatic control;
  • Reduction of power consumption due to smooth regulation;
  • Reliability enhancement due to application of microprocessor control system and diagnostics, which allows to reveal in time a locomotive circuit failure and analyze processes before and after the failure.

Inverter part of converters is made on IGBT-transistors with microprocessor control. The converter has a diagnostic system, which detects operation troubles in proper time and informs a driver about them, and a built-in ventilating system.

The converter is made with intermediate a.c. with output voltage regulation at the primary transformer side and with two uncontrollable rectifiers, each of them being oriented for power supply of series windings of two traction motor main poles. Conversion frequency is 13 kHz. The output voltage is 2X20kW. The converter weight is 375 kg.

Excitation current is regulated smoothly, by means of changing IGBT transistor opening angle with application of a synchro, which is being turned from the controller brake lever. Antiexcitation coefficient is – 0,3.

 

New pantograph based on T-5 Series

Токоприемник с новым пневматическим приводом

The pantograph Т-5М1 (П-5) is used for dynamic electrical connection between a contact line and electric circuits of an electric locomotive.

Technical Characteristics:

Rated voltage, V 3000
Long-term permissible current, А:  
at stop 300
at movement 2200
The highest traverse speed, km/h 120
The time of the pantograph lifting from a folded position to the highest operating altitude at rated pressure of compressed air, sec 7 — 10
The time of the pantograph lowering from the highest operating altitude to the folded position at rated pressure of compressed air, sec 3,5 — 6,0
Operating altitude range, mm 400 — 1900
The highest lifting altitude, mm 2100
Static pressure on a contact line in the operating altitude range, N:  
active (at lifting) 100
passive (at lowering) 130
Carriage movement, mm 50
The difference between the strongest and the least pressures at one-direction motion of the pantograph in the operating altitude range, N, no more than 15
Lowering strength in the lifting altitude range, N, no less than 200
The least pressure of compressed air for normal work of a pneumatic drive, kPa 350
Initial pressure of compressed air for the hermeticity test of the pneumatic drive, kPa 675
 

Coke-quenching electric locomotive EK-15

Коксотушильный электровоз ЭК-15

Technical charcteristics of coke-quenching electric locomotive EK-15

Main Parameters and Dimensions Standards
Type of electric locomotive EK 15
Track gauge, mm 1435, 1520, 1676
Type of current alternating
Three-phase current frequency, Hz 50
Voltage, V 380, +10% -15%
Adhesion weight of electric locomotive , kN (ton-force) 382.59 ± 11.58 (39 ± 1.18)
Wheel pair loading, kN (ton-force) 191.29 ± 5.78 (19.5 ± 0.59)
Running gear formula 20
Number of tractive motors 2
Rated capacity on the shafts of tractive motors, kilowatt 100 x 2 = 200
Maximum driving speed with loaded coach, km/h 25
Driving speed during coke reception at dry and wet quenching, km/h: (at dry and wet quenching) 2.3 ± 15%
Maximum getaway tractive effort, N (kilogram-force) 76910 (7840)
Maximum value of direct current at speedup, A 1140
Electric locomotive control indirect, automatic and manual, remote
Transmission one-way, straight
Gear ratio of tooth gear 5.88
Electric locomotive braking distance at a speed of 25 km/h:
using a brake valve 4BK , m
electropneumatic braking (tn=2c), m

65
50
Providing an exact stop of electric locomotive at dry quenching of coke – with a rail brake TPM-5Д  
Number of rail brakes TPM-5Д-24B 4

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