Address:
84, D. Guramishvili Ave.,
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
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
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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