rotary converter – mt range installation & operating instructions
Contents
1. a good earth point Removal of the socket will compromise any warranty offered by the manufacturers ROTARY CONVERTER RATINGS SINGLE PHASE SUPPLY VOLTAGE CYCLIC LOAD 220 240 VOLT Fuse Maximum Load Maximum Load Circuit Minimum Load Single Motor Multi Motor Breaker Cable No minimum 1 10KW 01 5hp 1 10kKW 01 5hp 13A 2 5mm No minimum 1 50kKW 02 0hp 1 50kW 02 0hp 13A 2 5mm No minimum 2 20kW 03 0hp 2 20kW 03 0hp 20A 4 0mm No minimum 3 00kW 04 0hp 3 00kW 04 0hp 25A 4 0mm Minimum size for run of up to 20m For longer cable runs see current edition of BS7671 AS300 amendment 2 3 The MT converter incorporates a three phase motor which establishes the artificial three phase output from the converter when energised 4 Before any machinery is connected to the output of the converter switch the converter on by using the on off switch located on the converter The motor on the converter will automatically attain its full operating speed within a few seconds POWER CAPACITORS LIMITED TIG ek 30 REDFERN ROAD V TYSELEY ISO9001 ogis B RM N G H AM REGISTERED COMPANY Py ee Bi1 2BH 015 BS EN ISO 9001 Certificate No 8174 The initial surge required to start the motor is provided by the boost circuit of the converter The boost on light indicates the circuit is energised The circuit is controlled automatically from within the converter switching on whenever a2. or similar Note that the output neutral is for control circuit loads only It should not be connected to any single phase inductive or resistive loads If the rotation of the driven machine motor is incorrect ensure that the converter phases marked L and L3 are changed for 415 volt phase phase control circuitry For 240 volt phase neutral control circuitry ensure that the phase neutral supply is maintained and the other two phases reversed The motor starting current is limited to approximately three times the full load current of the motor The starting characteristics of a three phase motor supplied by a converter are similar in nature to Star Delta starting on a three phase system Significant reductions in starting torque are experienced when compared with direct on line starting on a three phase supply For machinery supplied by a converter direct on line starting is recommended For machinery fitted with Star Delta starters the period in the star connection should be as short as possible to ensure a successful start NOTE The output from a TRANSWAVE Converter cannot be compared directly to a mains three phase electricity supply The TRANSWAVE Converter offers an artificial means by which a three phase motor or motors can be operated from a single phase electricity supply The TRANSWAVE Converter cannot be made to work equally on all motors even though the horsepower speed and voltage ratings are the same Motors of differing manuf
3. acture and motors designed for differing applications vary considerably in their electrical characteristics It is not always possible to make a universally applicable converter to operate a motor of given horsepower and rating TRANSWAVE Converters are not designed for use in conjunction with continuous duty applications Power Capacitors Limited 04 2005
4. ee SO TRANSWAVE Sales Service and Support eee Local Call 0121 7084522 ranswaqave Switchboard 0121 7082811 Fax 0121 7654054 E mail transwave powercapacitors co uk CONVERTERS www powercapacitors co uk ROTARY CONVERTER MT RANGE INSTALLATION amp OPERATING INSTRUCTIONS Adequate overload protection for both the driven machinery and the supply circuit to the converter is the responsibility of the customer The customer should also ensure that the electricity system and cable supplying the converter is of sufficient capacity to allow the motor to start without causing undue supply disturbances as a consequence of voltage drop THE CUSTOMER MUST ENSURE THAT THE OUTPUT NEUTRAL FROM THE CONVERTER IS NOT CONNECTED TO THE ELECTRICITY PROVIDER S SUPPLY NEUTRAL OR THE SUPPLY NEUTRAL FROM A GENERATOR THE SINGLE PHASE SUPPLY NEUTRAL MUST BE KEPT ELECTRICALLY SEPARATE FROM THE CONVERTER OUTPUT NEUTRAL TO AVOID DAMAGING THE CONVERTER 1 Ensure that the details on the converter rating plate are compatible with the electricity supply system and the required motor loads 2 The incoming supply should be connected to the converter via an isolator and protection device i e fuse or Type C Motor Rated circuit breaker Recommended fuse ratings and cable sizes are indicated below The output from the converter takes the form of an industrial style plug socket Notation L L2 L N All earth connections should be securely connected to
5. motor is starting against load and switching off once the motor has attained its full running speed If the boost light does not go out within a few seconds the converter should be switched off to avoid the possibility of electrical damage to the motor The reason for this condition should be checked and corrected before the converter is restarted 5 Note that if voltages were checked at this point phase to phase readings would be similar to those experienced on a mains three phase supply Note that the voltages do not relate to earth as they would on a mains three phase supply Switch the converter off and connect driven machines to the converter terminals Care should be taken with the connection of the machine to the output terminals If the machine has a contactor starter the 400 415v control coil must be fed from the phases marked L and L If the control circuit is fed incorrectly i e connected to the phase marked L the contactor could chatter when operating Similarly a control transformer and or lighting transformer with a primary winding of 415v must be fed from the L and L phases Connection to the L phase could lead to premature ageing of the control transformer The MT converter can accommodate both a 415v control circuit as above and a single phase 240v control circuit provided the L phase is used in conjunction with the output Neutral Multi motor applications should be supplied from the converter output via a three phase radial
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