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PW-VP50 CT Polarity Checker

7

2.2 Slave machine

Inductive signal

Positive

Inductive signal

Negative

There is one pair of signal input port on the slave machine.

The port will be connected with the CT secondary side.

Note:

The current amplitude for the input current can be over than 50mA, otherwise the

machine will be damaged.

When the inductive current is input, the inductive current LED indicator will be on for

indication. The slave machine will collect the inductive current waveform and analyze the

CT polarity. If it is analyzed polarity Positive, the LED Positive polarity will be on in green

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Summary of Contents for PW-VP50

Page 1: ...OVO POWER CO LTD Any form of copy should obtain the consent of it This manual represents the technical status for the moment of publishing The product information description and specifications mentioned in the manual do not have any contact binding force and PONOVO POWER CO LTD remains the right to make modifications to the technical specifications and configurations without prior notice PONOVO P...

Page 2: ...Master machine and slave machine 5 2 1 Master machine 5 2 2 Slave machine 7 3 CT Polarity testing wiring connection 9 4 Compare with traditional battery test 10 5 Specifications 11 5 1 Specifications for master machine 11 5 2 Specifications for slave machine 11 6 Accessories 12 ...

Page 3: ...t in case the slave machine is damaged 5 Please do not block the ventilation on the back of master machine It is suggested lay it inclined for dissipation 6 Please turn down the current peak value or prolong the output cycle to extend the battery life if the master battery is lower than 20 It is not suggest recharging the master machine while doing testing to avoid interference or security concern...

Page 4: ...plitude and period to the primary side of CT three phase at the same time The other slave machine will receive and analyze the waveform of induced pulse current at the secondary side so as to judge the polarity is positive or negative automatically by the LED indicator on the machines This testing method is very simple reliable and easy to operate There are built in battery inside of the kits and ...

Page 5: ...PW VP50 CT Polarity Checker 5 2 Master machine and slave machine 2 1 Master machine Phase A Phase B Phase C Phase A Phase B Phase C There are three pairs of current output ports A B and C ...

Page 6: ...ax pulse current injected to the CT primary side There are four grades 1A 2A 3A and 5A The higher of the max current the higher of the induced current in CT secondary If so the power consumption will be higher and the battery working time will be shorter We suggest using the 5A option when the CT ratio is higher than 4000 5 and using 1A or 2A or 3A option with CT ratio lower than 4000 5 Single tri...

Page 7: ... CT secondary side Note The current amplitude for the input current can be over than 50mA otherwise the machine will be damaged When the inductive current is input the inductive current LED indicator will be on for indication The slave machine will collect the inductive current waveform and analyze the CT polarity If it is analyzed polarity Positive the LED Positive polarity will be on in green ...

Page 8: ...PW VP50 CT Polarity Checker 8 for 2 seconds and alarm if it is analyzed polarity Negative the LED Negative polarity will be on in red without alarm ...

Page 9: ...he slave machine will be connected with the CT secondary side to check the winding polarity If there are more than 2 slave machines configured more CT polarity can be checked at the same time There is magnetic installed inside of the slave machine so it can be attached to the cabinet for convenience During testing if it is showing the master battery low indication LED on it is suggested decrease t...

Page 10: ...e master machine can send the pulse in cycle And the test engineer needs only to check the CT polarity on basis of inductive polarity of the CT secondary from the slave machine 3 By battery test more than 2 engineers should be required for the site testing Besides the long distance communications testing wiring connection etc makes the testing in low speed Moreover the pulse current amplitude will...

Page 11: ...le trigger cyclic trigger Battery working time for reference Based on the setting Period Max current Phase Working time 2s 1A Single 36h 2s 1A Three phase 12h 3s 5A Single 6h 3s 5A Three phase 4h Power supply Lithium battery 8 4V 5000mAH Weight 450g 5 2 Specifications for slave machine Power supply 4 pcs AAA battery Max working time 40h Weight 250g Polarity check automatic check with LED indicator...

Page 12: ... accessory package for PW VP50 contains the following articles Note The accessories used with the kit should be supplied by the manufacturer The pictures are for reference only 1 Primary test lead Amount 6 pieces 2 Secondary test lead Amount 2 pieces ...

Page 13: ...PW VP50 CT Polarity Checker 13 3 Crocodile clamp in primary Amount 6 pieces 4 Crocodile clamp in secondary Amount 2 pieces 5 Battery charger Amount 1 6 CT Amount 1 ...

Page 14: ...PW VP50 CT Polarity Checker 14 7 Portable case ...

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