Power switching sets

Testing Room

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The company T Machinery a.s. has a new testing polygon, primarily determined for type and piece testing of produced mining devices. Basic component of the testing room is a new transformer station providing a wide range of supply voltage.

Motor load and gear system can be done by the help of two asynchronous dynamometers recuperating energy of the testing system back to power supply network. Both dynamometers are equipped with digital control unit enabling operation in drive regime or load and revolution or moment coupling. Control unit is connected to PC which contains program for analysis and measured data processing.

The testing room is equipped with precise performance-related analyser YOKOGAWA WT1800. By the help of external converter a three-phase measurement of voltage up to 8 kV is possible and three-phase measurement of current up to 1000 A. The testing room is further equipped with 16 channel mobile temperature measurement unit (12 x sensor PT100, 4 x K type thermoelement). The unit enables measurement of temperatures in the range from 0 to 200°C. When using thermoelements it is possible to measure temperatures directly onto live parts up to voltage of 660V.

For cooling of tested devices the testing room is equipped with own cooling aggregate that is independent upon public water pipeline. This cooling aggregate has totally two circuits. The first circuit is an opened one, water, with maximum flow of 200 l/min at maximum pressure of 2.75 MPa. The second circuit is a closed one with anticorrosive coolant. This one has maximum flow of 50 l/min and maximum pressure of 1.2 MPa.

The company T Machinery a.s. offers both processing of technical tests according to own customer's requirements, and also direct lease of the whole working place to professional public.

Technical parameters of every type are in the PDF leaflet

Contactor APK9U.Pxx

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High-voltage cabinet is made of explosion proof implementation and is intended to operate in deep coal-mine. (Classification IM2). Cabinet body provides protection level IP 54.

 
High- voltage cabinet is welded multi compartment steel structure with quickly lockable shutter. This equipment is intended for switchingon and switch off electric motor
with tension 1140V/ 660 V - but not more than 9 motors.

Strength contactors are divided to three separate circuits.

Technical parameters of every type are in the PDF leaflet

Tension Converter MFK400.SNO

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Tension Converter MFK 400.SNO is made of non explosive implementation and is intended for coal mines with classification I M2.

 
Inner parts of the equipment comply with protection level IP 54.
Tension converter MFK 400.SNO serves for connecting traverse motor of combine.

Technical parameters of every type are in the PDF leaflet

Transformer TPK9S.xxx

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Transformer TPK9S.xxx (thereinafter only transformer) is designed and produced by company T Machinery a.s. and together with frequency convertor is designed to feed shearer motors. Equipment is designed for undeground operation in coal and other mines – in enviroment with explosion hazard.

 
Equipment is designed as three phase transormator, determined for operation in mine electric sets with insulated neutral – IT. Transformer is equiped with with equipment for insulate state monitoring on its secondary side. All electric device of transformer are placed on hard cover. Ecxept instrinsically safe circuits which are brought out to out enviroment wiht explosin hazard.

Technical parameters of every type are in the PDF leaflet