ELECTRIC LOCOMOTIVEHIGH CAPACITY RESISTORS
Force Cooled Roof Mounted DBR
For WAG7 Electric Locomotive DU110118001
It has two units i.e. two Mounting Frames. Each frame consists of Resistor Unit for (3RF i.e. for three Traction Motors) and one Blower Motor Assembly.
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Vertical Type DBR
For WAG7 Electric Locomotive DU110104005
This is highly compact braking resistor. The resistor is divided into Resistor bank, 3 Phase Induction Motor and Blower. Resistor bank consist of six resistor tiers connected to six traction motor. Resistor banks are made from nickel chromium alloys capable to withstand high temperature with low tendency of aging, low resistance change and long life.
View Full DetailsNatural Cooled Roof Mounted DBR
For WAP-4 Electric Locomotive DU120119007
The Roof Mounted Naturally Cooled DBR fitted on the roof of the Loco Electric Locomotive in required to control a train of 1432 tonnes (24 Coach trains) on a continuous down gradient of 1 in 200 at a speed of 40 kmph and also to reduce the speed from its normal running speed 110/110 kmph to 40 kmph.
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Resistor Harmonic Filter
DU120106001 (for WAG-9) & DU120115004 (for WAP-5)
Line Harmonic Filter is connected with Primary winding of main transformer which consist of resistors and capacitors. The Harmonic Filter reduces the high frequency harmonics to avoid disturbance in signalling. If the harmonic filter gets by- passed by the system, the speed of the locomotive will be automatically restricted up to max. 40 kmph. The complete Resistor Assembly is mounted on the roof of the Locomotive. This Resistor is naturally cooled by air circulation.
View Full DetailsResistor Over Voltage Protection (MUB)
For WAP-7 / WAG-9 type 3-Phase Electric Locomotive DU120107002
Resistor Over Voltage Protection called MUB is provided in the over voltage limitation circuit which is one of the main constituent of traction power convertor (Machine Room Equipment).
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Pre-Charge Resistor
For WAP-7 / WAG-9 type 3-Phase Electric Locomotive DU120108003
It is part of the Power circuit of the Traction Convertor. During powering up of the convertor, charging contactor is closed, so that the convertor DC link is pre-charged through the charging resistor and the diodes in the Valve Set.
View Full DetailsOil Cooled Resistor
Electric Locomotive (Dynamic Braking)
This Resistors are of different rating varying from 300 Watt to 12 kilowatts and are housed in a square aluminium tank besides GTO Thyristors, diodes etc. and form a so called valve sets (Total 8 Nos. per loco i.e. Line Convertor and Motor Inverter).
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