SCR ( Silicon Controlled Rectifier) & BCR (Battery Charging Rectifier)
SCR ( Silicon Controlled Rectifier) Exciter Bridge Assembly
OEM PART NO. 8451653
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Description:
The exciter bridge converts DC power from the locomotive’s auxiliary system into AC power to energize the main generator’s field windings. This controls the output voltage of the main traction generator that powers the electric traction motors. The exciter bridge receives DC voltage from the locomotive’s auxiliary electrical system. Based on gate signals from the excitation controller, the SCRs rectify this into controllable three-phase AC power to excite the main generator’s field.
Specification:
- Nominal 240 volts RMS
- Maximum 265 volts RMS
- Frequency 35 to 126.
Applications:
For all EMD Diesel Electric Locomotives.
We have a list of multiple products and part numbers available with us. Download the catalogue to find your specific part number.
Rectifier & Resistor Assembly Battery Charger (BCR)
OEM PART NO. 8479400
Description:
In diesel-electric locomotives, the primary battery charging mechanism is the rectifier and resistor assembly.
Rectifier: To charge the batteries, this device transforms the main traction alternator of the locomotive’s AC electricity into DC current. usually makes use of silicon diodes in a circuit for a full-wave bridge rectifier.
Assembly of Resistors: includes resistors set up in parallel and series to regulate and restrict the DC output current used to charge the batteries, enables batteries to share current. The resistor assembly receives the rectified DC and uses it to provide the locomotive’s lead-acid batteries with a regulated charging current.
Specification:
- Input Nominal Voltage: 55 volts RMS Max 75Volts RMS 3 Phase
- Frequency: 35 to 126Hz
- Output: 65-75 VDC 150Amp Max for battery charging resistor and rectifier 65-75 VDC
- 250 Amps Max for 3 phase Bridge.
Applications:
For all EMD Diesel Electric Locomotives.
Note:
This item is available in different parts Nos. 8475590, 8451653
We have a list of multiple products and part numbers available with us. Download the catalogue to find your specific part number.
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