Welcome to Vishwa Group

Pressor Sensor / Transducer

TROLEX manufactures Pressures Sensors of BOTH Piezo-Resistive as well as Thin Film Strain Gauge technologies and is the first supplier of Indian Railways to do so.

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Differential Amplifier

The Differential Amplifier powers a pair of two-wire loop 4-20mA pressure sensors and produces a single three wire 4-20mA single.

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Temperature Sensor

The Temperature Sensor Probe contains Dual PT100 Element within a stainless-steel housing for use in air, oil/or water mediums for measuring Temperature.

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Air Sampling Fire Detector Unit

Trolex Air Sampling Fire Detector is designed to provide the facility for the Real time monitoring of smoke.

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Driver Display Unit

The Driver Display provides 800x600 VGA graphic and works as a man machine interface. Made as panel mount equipment.

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Crew Voice and Video Recording System

Crew Voice & Video Recording System (CVVRS) which shall ensure effective and tamper proof Video and Voice recording.

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Earthing Switch for VCB

The Earthing Switch is a manually operated device with safety interlocking keys. It is as safety device designed to ground electrical circuit on both sides.

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Key Multiplier Set

The Key Multiplier is a Safety Device that will ensure isolate main power supply before the access of maintenance staff to the high voltage power equipment.

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DC to DC Converter

DC to DC converter is designed as power supply modules for electronic systems. The main features include a high level of efficiency.

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Earth Fault Relay

Used to detect any earth fault in a floating power supply system used in the Loco like Auxiliary Power system and battery System.

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Discharging Resistor To Capacitor Bank

Installed in the Filter Cubicle. Used to discharge the stored reminisenc energy on the capacitor when the main supply of the loco is turned OFF.

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Primary Current Sensor

Primary Current Sensor is based on closed loop hall effect sensing principle for measurement of Current AC, DC and impulse current.

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Control Cubicles SB1 & SB2 for Electric Loco

Control Cubicle 1 (SB1) and Control Cubicle 2 (SB2) for Three Phase Locomotive are panels to provide the interface to locomotive devices like pantograph.

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Auxiliary Circuit Cubicle HB1 & HB2 for Electric Loco

Auxiliary Circuit Cable 1 (HB1) and Auxiliary Circuit Cubicle 2 (HB2) for Three Phase Locomotive are panels of contactors, switches, circuit breakers, etc.

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Filter Block

The Filter Block is used to reduce harmonics in the catenary current.

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Cubicle F

Cubicle F is the interface between the Driver Control Desk and the Control cubicles SB1 & SB2.

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A, C & D Panel

The A, C and D Panels are mounted on the Driver Control Desk. These panels are used as human machine interface.

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Cable Harnessing for Locomotive

It interconnects all the Panels/ Cubicles/ Equipment such as: Transformer, Filter Block, Traction converter, Aux converter, Traction Motor, Control Panels.

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