O masina pentru masurarea tensiunii de la supratensiuni de tensiune medie
  • O masina pentru masurarea tensiunii de la supratensiuni de tensiune medie

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Producător: DACPOL SERVICE

O masina pentru masurarea tensiunii de la supratensiuni de tensiune medie

Measuring equipment for voltage measurement of medium voltage surge arresters


Machine description

The machine is designed to measure voltage classification of medium voltage surge arresters with rated voltage range from 5kV to 51kV. The tests are performed according to the requirements of PN-EN 60099-4 standard as the final tests of the production process on all units of arresters.

The arresters are tested in the HV compartment of the machine, inaccessible to operators, and their replacement is carried out by a turntable equipped with arresters holders controlled by pneumatic cylinders. The spacing between the holders is set automatically by actuators (electrically controlled actuators). During testing of one arrester the operator exchanges the tested arrester for the next one.

The HV test circuit is galvanically isolated from the mechanical structure of the machine. Test voltage and arrester current are measured by measuring cards placed at high potential and digitally transmitted via bidirectional fiber optic links to the panel computer. The information is transmitted between the sub-assemblies using the Ethernet standard. The machine is equipped with its own, network-independent, sinusoidal voltage test source.

The user operates the machine using a touch screen panel computer. The computer screen displays text messages making the operator's work easier, obtained test results and current and voltage waveforms in the form of graphs, as well as diagnostic messages including the visual location of a faulty component. The operation of the machine components is controlled by a PLC.



Technical data

Measuring machine parameters
Machine performance 180 pcs/h
Handling 1 person
Power supply
 230V; 50Hz
Rated power consumption Approx. 4 kW
Operator-machine communication
 Panel computer with touch screen
Form of communication Text messages, digital measurement results, graphs of recorded arrester current and test voltage waveforms, visual fault location, control buttons
Types of machine software Testing of limiters, service, archive, factory settings
Service software Actuator and actuator test, communication test, limit switch test (step operation), machine test
Machine control PLC controller
Drives - pneumatic actuators (4 pcs.)
- actuators (3 pcs.)
Communication between machine components ETHERNET
Test circuit Isolated from the machine's mechanical structure
Power supply of metering systems on the HV side Auxiliary transformer 230 V/230 V Utest = 65 kV
Test voltage adjustment range 0÷60000 Vrms
Test voltage shape Sine
Test voltage frequency 50 Hz
Measurement range of the active current peak value 0÷10 mA
Accuracy of active current measurement ±1%
Rated voltage range of tested arresters 5000 V÷45000 V
Test voltage source parameters
Power supply
 230 V; 50 Hz
Main power Ok. 3 kW
HV transformer power
 2,5 kVA
Insulation test voltage 65 kV; 50 Hz; 1 min
Voltage transformer ratio 170 V/60000 V
Current transformer ratio 14,7 A/0,04 A
Test voltage shape sine
Harmonic content <4%
Setting the test voltage value ETHERNET
Adjusting the voltage supply to the primary winding Continuous amplitude adjustment 0÷170 V
Measurement card parameters
Power supply
 230 V; 50 Hz
Number of measurement ranges 4 pcs.
Measuring ranges of the voltage card 0÷17 kVrms;
0÷34 kVrms;
0÷68 kVrms;
0÷136 kVrms;
Measuring range of the current card 0÷10 mA
Sampling rate 10 kHz
Resolution 12 bits
Accuracy of voltage measurement ±0,2%
Accuracy of current measurement ± 1%
Current and voltage measurement methods
Set value of the test voltage amplitude The active component of the limiter current is read for this value.
Set value of active component of limiter current The test voltage amplitude is read for this value.
Test voltage measurement system
Voltage divider Capacitive 60000 V/10 V
Measurement card Parameters as above
Card power supply Transformer 230 V/230 V; 50Hz; Uisol=65 kV; 1 min
Current measurement system
Measuring resistor 744 Ω
Measurement card Parameters as above
Signal transmission between cards and computer
Fiber optic connectors Two-way; 2 sets
Fiber optic converter SE-37; 4 pcs
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Measuring equipment for voltage measurement of medium voltage surge arresters


Machine description

The machine is designed to measure voltage classification of medium voltage surge arresters with rated voltage range from 5kV to 51kV. The tests are performed according to the requirements of PN-EN 60099-4 standard as the final tests of the production process on all units of arresters.

The arresters are tested in the HV compartment of the machine, inaccessible to operators, and their replacement is carried out by a turntable equipped with arresters holders controlled by pneumatic cylinders. The spacing between the holders is set automatically by actuators (electrically controlled actuators). During testing of one arrester the operator exchanges the tested arrester for the next one.

The HV test circuit is galvanically isolated from the mechanical structure of the machine. Test voltage and arrester current are measured by measuring cards placed at high potential and digitally transmitted via bidirectional fiber optic links to the panel computer. The information is transmitted between the sub-assemblies using the Ethernet standard. The machine is equipped with its own, network-independent, sinusoidal voltage test source.

The user operates the machine using a touch screen panel computer. The computer screen displays text messages making the operator's work easier, obtained test results and current and voltage waveforms in the form of graphs, as well as diagnostic messages including the visual location of a faulty component. The operation of the machine components is controlled by a PLC.



Technical data

Measuring machine parameters
Machine performance 180 pcs/h
Handling 1 person
Power supply
 230V; 50Hz
Rated power consumption Approx. 4 kW
Operator-machine communication
 Panel computer with touch screen
Form of communication Text messages, digital measurement results, graphs of recorded arrester current and test voltage waveforms, visual fault location, control buttons
Types of machine software Testing of limiters, service, archive, factory settings
Service software Actuator and actuator test, communication test, limit switch test (step operation), machine test
Machine control PLC controller
Drives - pneumatic actuators (4 pcs.)
- actuators (3 pcs.)
Communication between machine components ETHERNET
Test circuit Isolated from the machine's mechanical structure
Power supply of metering systems on the HV side Auxiliary transformer 230 V/230 V Utest = 65 kV
Test voltage adjustment range 0÷60000 Vrms
Test voltage shape Sine
Test voltage frequency 50 Hz
Measurement range of the active current peak value 0÷10 mA
Accuracy of active current measurement ±1%
Rated voltage range of tested arresters 5000 V÷45000 V
Test voltage source parameters
Power supply
 230 V; 50 Hz
Main power Ok. 3 kW
HV transformer power
 2,5 kVA
Insulation test voltage 65 kV; 50 Hz; 1 min
Voltage transformer ratio 170 V/60000 V
Current transformer ratio 14,7 A/0,04 A
Test voltage shape sine
Harmonic content <4%
Setting the test voltage value ETHERNET
Adjusting the voltage supply to the primary winding Continuous amplitude adjustment 0÷170 V
Measurement card parameters
Power supply
 230 V; 50 Hz
Number of measurement ranges 4 pcs.
Measuring ranges of the voltage card 0÷17 kVrms;
0÷34 kVrms;
0÷68 kVrms;
0÷136 kVrms;
Measuring range of the current card 0÷10 mA
Sampling rate 10 kHz
Resolution 12 bits
Accuracy of voltage measurement ±0,2%
Accuracy of current measurement ± 1%
Current and voltage measurement methods
Set value of the test voltage amplitude The active component of the limiter current is read for this value.
Set value of active component of limiter current The test voltage amplitude is read for this value.
Test voltage measurement system
Voltage divider Capacitive 60000 V/10 V
Measurement card Parameters as above
Card power supply Transformer 230 V/230 V; 50Hz; Uisol=65 kV; 1 min
Current measurement system
Measuring resistor 744 Ω
Measurement card Parameters as above
Signal transmission between cards and computer
Fiber optic connectors Two-way; 2 sets
Fiber optic converter SE-37; 4 pcs
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