Protection components
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Mors Smitt Railway Technology Protection components Protection relays  Hall effect sensors

Mors Smitt Railway Technology Protection components

New solutions are co-designed with railway operator and contractors, creating ever safer railway network

Railway protection In the international railway sector the main focus of performance, reliability & priority is given to the protection of rolling stock electrical equipment and infrastructure electrical installations ensuring no compromises for the safety of passengers. Harsh environments such as extreme operating temperature, damp heat, vibration and shocks, fire and smoke standards, critical and safe operation of power equipment, braking and electrical distribution require high quality standard electrical protection devices. Protection relays Mors Smitt maintenance and supply free...

Protection relays Voltage and current protection relays Principle With over 20 years experience in measurement for railway equipment, Mors Smitt has designed and manufactured detection and protection relays for railway onboard and trackside applications of currents, voltages and differential currents monitoring. PRA (current protection relays) and PRV (voltage protection relays) require no auxiliary power supply and provide commonly 1N/O +1N/C output relay contact. Mors Smitt protection relays operate on an electromechanical magnetic circuit principle. Primary current or voltage create in...

This technology allows all current or voltage waveforms: direct, alternating and impulse currents or voltages No auxiliary supply needed, stand alone unit required for safety application High galvanic isolation up to 12 kV High reliability and robustness, no friction of mobile armature, maintenance free device. Extreme high speed response Strong ability to withstand high overloads due to its magnetic circuit materials Adaptable to specific customer applications Operating temperature -50 °C...+85°C Applications • Voltage: minimum, maximum, interval monitoring, differential voltage. •...

Product range PRV - Voltage protection relays Onboard & trackside control cabinet mounting PRA - Current protection relays Onboard & trackside control cabinet mounting

Functions The relays provide under, over, interval, differential voltage and current monitoring for the following applications: • Catenary voltage detection • Overload, second side transformer short-circuit detection • Battery load shedding and charging current monitoring • 3 Phase motor pump and fan protection against phase loss, unbalance • Current monitoring in magnetic brake • Ground fault detection in the traction power equipment High galvanic insulation PRA and PRV relays withstand high overloads due to a very magnetic circuit materials and offer a high galvanic insulation up to 12...

Common technical characteristics 1 other outputs on request 2 more terminals on request XmMors Smitt www.morssmitt.com VJMIT

Example: Onboard schematic of Mors Smitt protection relays in a self propelled car AC overhead line Maximum current detection Circuit breaker Ground fault detection differential relay Main transformer 2x 3-phase motor 3-phase unbalance for pumps & fans insulation fault detection Voltage detection Transformer Catenary voltage detection Current transformer 3-phase AC output Current relay monitoring Battery DC output Current traction brake detection Catenary voltage detection 1500/3000 VDC Axle brush Overload current detection Return through wheel and running rail Battery voltage monitoring...

Hall effect sensors Closed loop voltage and current sensors Principle With over 20 years experience in measurement for railway equipment, Mors Smitt has developed a new range of sensors based on closed loop hall effect technology. They allow for the measurement of all current waveforms, with high galvanic insulation between the primary and secondary circuits. The hall effect probe placed in the air gap of the magnetic circuit provide a voltage proportional to this flux. The electronic circuit amplify the signal from the primary current Ip or voltage Up flowing across the sensor and...

This technology allows all current or voltage waveforms: direct, alternating and impulse currents or voltages Accuracy from 1% of up to 0.5% over a large frequency range (from direct to more than 100 kHz) High galvanic isolation up to 10 kV Excellent linearity across a wide operating temperature of -50 °C...+85 °C High reliability and overload capacities Voltage measuring: catenary, secondary transformer and power electronics sufficient voltage monitoring for traction, track side voltage monitoring. Current measuring: secondary transformer, DC link power electronics overload monitoring and...

Product range MSV Electronic voltage sensors MSA Hall effect current sensors MSA2010 Eliptic current sensor busbar direct for easy mounting and installation, cost saving. V^^f A Wabtec Company www.morssmitt.com ^MIT

Common technical characteristics ' other outputs on request 2 other terminals on request ^MITT" www.morssmitt.com XmMors Smitt

Application example Main irtvtrter Voltage transducers • Secondary transformer overload of shortcircuit detection • DC linkform ground fault and overload • Motor overload • Traction current • Catenary voltage • Secondary transformer for sufficient traction power • DC link volrage to protect power • Phase loss or unbalanced to protect XmMors Smitt www.morssmitt.com VJMIT

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Mors Smitt Railway Technology Protection components

SALES OFFICES FRANCE Mors Smitt France SAS Tour Rosny 2, Avenue du Genéral de Gaulle, F - 93118 Rosny-sous-Bois Cedex, France T +33 (0) 1 4812 1440 F +33 (0) 1 4855 9001 E sales.msf@wabtec.com HONG KONG Mors Smitt Asia Ltd. 29/F., Fun Tower, 35 Hung To Road Kwun Tong, Kowloon, Hong Kong SAR T +852 2343 5555 F +852 2343 6555 E sales.msa@wabtec.com THE NETHERLANDS Mors Smitt B.V. Vrieslantlaan 6 3526 AA Utrecht, The Netherlands T +31 (0)30 288 1311 F +31 (0)30 289 8816 E sales.msbv@wabtec.com UNITED KINGDOM Mors Smitt UK Ltd. Graycar Business Park Barton under Needwood, Burton on Trent...