Advanced HV circuit breaker analyzer PKV/M7

Certificates

  • Safety Test Certificate IEC 61010-1:2001
  • Russian State Register Certificates
  • Declaration of Conformity of the Customs Union
  • Russian Register of Innovative Products
  • Recommended for use in JSC Russian Railways electric installations

Monitoring the technical condition of high-voltage circuit breakers up to 4 breaks

More

Diagnostic of circuit breakers of all types

More

Sufficient measuring ranges for time (up to 5.2 s), speed (up to 20 m/s) and travel (up to 900 mm) intervals

More

High measurement accuracy

More

Table of measured values and automatic calculations

More

Recorded graphs with detailed information on the status of the circuit breaker

More

Monitoring of high-voltage circuit breakers in simple and complex cycles

More

Work with diagnostic results, device control and data transfer on PC

More

Proper operation in all weather conditions

More

PKV/M7 is designed for monitoring time, travel, and speed parameters of moving parts of oil, vacuum, SF6, and magnetic-type circuit breakers of all types, as well as for monitoring time parameters of isolators and short-circuiting switches.

Additionally, PKV/M7 allows you to register instant values ​​of currents and voltages of control solenoid.

PKV/M7 instrument is complete with attachment devices for the installation of measuring transducers on all types of high-voltage circuit breakers (ABB, AREVA, ALSTOM, SIEMENS, Susol, etc.).

Adaptability of the instrument involves designing of transducer attachments to the circuit breakers and receiving of transfer function of movement from the shaft to the cross-arm. Transfer functions of kinematic chains of all circuit breakers are stored in the memory of the instrument. Adaptation work began with the first produced model of the instrument (PKV/М1) in 1995 and continues to this day.

For example, in similar devices, a shorter time range does not allow testing circuit breakers in complex cycles.

There are a lot of nuances when taking measurements on circuit breakers. It is easy to register time parameters for any type of circuit breakers, but special transducers are required to obtain travel and speed characteristics.

Incremental (discrete) type transducers are supplied together with the PKV/M7 device for measuring speed characteristics and travel parameters. They do not require adjustment or customization of conversion factors. Moreover, the transducers are accurate and easy to use.

For example, devices with cable-type transducers have a limit on the upper-speed value. The return spring does not have time to wind the cable onto the drum with rapid changes in speed. The measurement error increases. The use of laser movement transducers is not advisable because of the danger of eye damage from the laser beam during rough handling. In addition, the installation of the laser transducer is made approximately and without clamps. This leads to a high error of the measurements.

For measuring speed and travel parameters, high accuracy of measurements of time parameters (±0.1 ms), travel and speed characteristics is ensured with incremental (discrete) angular and linear movement transducers with a resolution of 0.09° and 0.5 mm.

Transducers that are often used in other devices (analogues of PKV/M7 device) are based on a potentiometer. And even under normal conditions they have a large error (up to ±1%). For example, with a maximum travel of 900 mm, such an error gives an uncertainty of ± 9 mm.

The diagnostic results ar­e displayed in a table with measured and calculated parameters for each cycle operation (when processing measurement results for complex cycles, the device automatically breaks down the cycle into sim­ple operations). The tables provide such data as:

  • Travel parameters (full travel, travel to pole contacts closure, penetration, difference of operation in travel, bouncing in travel, overshot, rebound);
  • Time parameters (circuit breaker make time, circuit breaker closing time, pole closing time);
  • Speed ​​parameters (closing speed, time difference of contacts action, bouncing in time).

Apart from tables with measured parameters, more detailed information on circuit breaker status can be derived from recorded graphs that are navigated using cursors and scaling.

The instrument registers:

  • dependence of spe­ed on time and travel;
  • dependence of currents and voltages of electromagnets on time and travel;
  • diagrams of clo­sing / opening processes of the contacts.

The type of graphs is determined by the state of all links (levers, springs, rods, axes, traverses, dampers, etc.) of the kinematic chain of the mechanism that controls the closing / opening of the circuit breaker contacts. And the occurrence of a malfunction in at least one of the links (increase in play, loosening of the spring, increased friction, failure of the damper, etc.) changes the form of the graph from the normal form of a working circuit breaker immediately. It allows to identify its current or incipient malfunctions at an early stage by using a non-demountable method.

PKV/M7 is equipped with a power control module to control drives of switching devices both DC and AC, and enables to perform both simple operations and complex cycles, including life tests.

PKV/M7 is an independent device for diagnostic and data analysis, which does not require third-party equipment.

All settings, calculations and graphics can be performed on a graphic b/w LCD display (320 x 240 pixels).

If you have to carry out diagnostic in difficult weather conditions you can be sure that PKV/M7 will provide you with the most accurate results as it operates properly in the temperature range from -15°С to +40°С.

Specifications Value
Number of control channels of circuit breaker contacts 4 pcs.
Measuring and recording range of time intervals 0.001 - 5.2 s
Accuracy ±10-4[1 + tx] s,
where tx – measured time interval
Measuring range of linear movement 1 - 900 mm
Accuracy ±1 mm of main absolute error
Measuring range of angular movement 0.2 - 360 º
Accuracy ±[0.2 + 0.001 * ax], where ax – measured angle
Measuring range of speed 0.002 - 20 m/sec
Power switch cycles "Open"
"Close"
"Open-Pause-Close"
"Close-Delay-Open"
"Open-Pause-Close-Delay-Open"
Maximum switching test current ±14 A
Input voltage measurement range "Control module voltage" ±350
Voltage measurement range by "Analog input" channel 0 - 12 V (monopolar mode)
±6 V (bipolar mode)
Resistance measuring range by "Analog input" channel 0 - 160 Ω (output current of 60 mА)
0 - 2500 Ω (output current of 4 mА)
Power supply (mains voltage)

Note: To supply power to high-voltage circuit breaker drive that operates on direct current, a power supply cable adapter is used - by request
100-242 V AC, 49.5-60.5 Hz
100-340 V DC
Power consumption < 60 W
Operation temperature range -15 - +40 ºС
Environmental protection IP 64 (instrument cover closed)
IP 40 (instrument cover open)
Instrument weight 7 kg
Dimensions 360 х 290 х 165 mm
Display LCD monochrome graphic
320 x 240 pix
PC connection USB host, LAN, RS-232 and RS-485
Interface and user manual language English
Calibration interval 3 years
Warranty period 13 months

Standard complete set

Photo Item, Index Application
Main instrument PKV/М7
  • Main instrument PKV/М7
  • 026.00.00.000
  • Main instrument PKV/М7
  • 026.00.00.000

Instrument and accompanying documents: Calibration Certificate, User Manual, Log book, software.

Linear movement transducer DP12
  • Linear movement transducer DP12
  • 012.00.00.000-02
  • Linear movement transducer DP12
  • 012.00.00.000-02

For measuring the movement of moving parts in high-voltage circuit breakers. Range – 1 - 900 mm. Resolution – 0.5 mm. To be used together with a measuring stick.

Measuring stick
  • Measuring stick
  • 010.15.00.000-02
  • Measuring stick
  • 010.15.00.000-02

Measuring stick in a case. To be used together with linear movement transducer DP12 (length – 700 mm // on order – 550 mm and 1,000 mm).

Angular movement transducer DP21
  • Angular movement transducer DP21
  • 009.00.00.000
  • Angular movement transducer DP21
  • 009.00.00.000

For measuring the angle of shaft turn in high-voltage circuit breakers. Measuring range – 0.2 - 360°. Resolution – 0.09°.

Transducer cable
  • Transducer cable
  • 010.06.00.000-01
  • Transducer cable
  • 010.06.00.000-01

For connecting linear (DP12) or angular (DP21) movement transducer to the instrument. Cable insulation – silicone (length – 7 m // on order – 12 m).

А, В, C, D poles cables<br>(4 pcs.)
  • А, В, C, D poles cables
    (4 pcs.)
  • 010.05.00.000
    010.05.00.000-01
    010.05.00.000-02
    010.05.00.000-06
  • А, В, C, D poles cables
    (4 pcs.)
  • 010.05.00.000
    010.05.00.000-01
    010.05.00.000-02
    010.05.00.000-06

For connecting to the pole of high-voltage circuit breaker. Equipped with crocodile clamps. Cable insulation – silicone. Jaw Ø - 25 mm (length – 11 m).

Remote triggering cable
  • Remote triggering cable
  • 021.26.00.000
  • Remote triggering cable
  • 021.26.00.000

For remote triggering of measuring processes of the instrument. Cable should be connected to the drives of high-voltage circuit breaker electromagnet. Rubber insulation (length – 5 m).

Local triggering cable
  • Local triggering cable
  • 026.16.00.000
  • Local triggering cable
  • 026.16.00.000

For connecting to the high-voltage circuit breaker drive. Equipped with crocodile clamps. Nominal test current – 50 А. Cable insulation – silicone (length – 5 m).

Control module input voltage cable
  • Control module input voltage cable
  • 026.15.00.000
  • Control module input voltage cable
  • 026.15.00.000

For commutated voltage supply. Nominal test current – 50 А. Cable insulation – silicone (length – 2 m).

Resistance measuring cable
  • Resistance measuring cable
  • 026.18.00.000
  • Resistance measuring cable
  • 026.18.00.000

For measuring resistance in the range between 0 - 240 Ω and 0 - 2.5 kΩ. Equipped with M5 screw end caps (length – 2.5 m).

Attachment devices set
  • Attachment devices set
  • Attachment devices set

For attachment of DP12 and DP21 transducers to various high-voltage circuit breakers (clamps, boards, connector adapters, etc.).

Mains cable
  • Mains cable
  • 018.09.00.000
  • Mains cable
  • 018.09.00.000

For connecting the instrument to the power supply. Temperature range – -25°С – +45°С. Rubber insulation (length – 2 m).

Ground cable
  • Ground cable
  • 010.01.00.000
  • Ground cable
  • 010.01.00.000

For PKV/M7 case grounding. Equipped with a ground clamp and screw end cap. Nominal test current – 50 А (length – 2 m).

LAN cable
  • LAN cable
  • 024.26.00.000
  • LAN cable
  • 024.26.00.000

For connecting the instrument to the computer network or laptop (length – 2 m).

Cable end caps for M5 screws<br>(8 pcs)
  • Cable end caps for M5 screws
    (8 pcs)
  • 021.26.00.003
  • Cable end caps for M5 screws
    (8 pcs)
  • 021.26.00.003

For connecting to the drive of the high-voltage circuit breaker in case it is not convenient to connect to the screws of the drive strip with crocodile clamps.

Fuses (4 pcs.)
  • Fuses (4 pcs.)
  • Fuses (4 pcs.)

Type: VP2B-1V-2А (2 pcs.) / VP2B-1V-10А (2 pcs.). For the power source protection.

Attachment devices set kit
  • Attachment devices set kit
  • 126.06.02.000
  • Attachment devices set kit
  • 126.06.02.000

Tool bag
  • Tool bag
  • 126.06.00.000
  • Tool bag
  • 126.06.00.000

Convenient, robust, wear proof bag for transportation of cables, documentation and other accessories to PKV/M7 instrument.
Weight 0.6 kg.

Additional complete set (on order)

Photo Item, Index Application
Measuring stick
  • Measuring stick
  • 012.03.00.000
    012.03.00.000-01
  • Measuring stick
  • 012.03.00.000
    012.03.00.000-01

Measuring stick in a case. To be used together with linear movement transducer DP12 (length - 550 mm or 1,000 mm // 700 mm in standard complete set).

Transducer cable
  • Transducer cable
  • 010.06.00.000-02
  • Transducer cable
  • 010.06.00.000-02

For connecting linear (DP12) or angular (DP21) movement transducer to the instrument. Cable insulation – silicone (length – 12 m // in standard complete set – 7 m).

Cable for voltage measurement by
  • Cable for voltage measurement by "Analog input" channel
  • 026.19.00.000
  • Cable for voltage measurement by "Analog input" channel
  • 026.19.00.000

For measuring voltage in the range between 0 - 12 V and -6 - +6 V. Equipped with М5 screw end caps. Rubber insulation (length – 2.5 m).

Power cable adapter
  • Power cable adapter
  • 010.25.00.000-01
    010.25.00.000-02
  • Power cable adapter
  • 010.25.00.000-01
    010.25.00.000-02

It is required for DC drive control of high-voltage circuit breaker at the local triggering. Power cable adapter with a rectifier up to 32 А (modification 2). Connecting to the network with a europlug. Temperature range: -25ºС - +40ºС (length – 5 m, 10 m).

Attachment devices set (for foreign-made circuit breakers)
  • Attachment devices set (for foreign-made circuit breakers)
  • Attachment devices set (for foreign-made circuit breakers)

For attaching of DP21 angular movement transducer to SF6 circuit breakers manufactured by Siemens, ABB, Areva, etc.

 Nozzle No. 61
  • Nozzle No. 61
  • 010.00.00.039
  • Nozzle No. 61
  • 010.00.00.039

Attachment device for high-voltage circuit breakers Schneider Electric Evolis, Susol VL-06.

 Nozzle No. 62
  • Nozzle No. 62
  • 10.00.00.039-01
  • Nozzle No. 62
  • 10.00.00.039-01

Attachment device for high-voltage circuit breakers Schneider Electric Evolis, Susol VL-06.

 Nozzle No. 63
  • Nozzle No. 63
  • 010.00.00.039-02
  • Nozzle No. 63
  • 010.00.00.039-02

Attachment device for high-voltage circuit breakers Schneider Electric Evolis, Susol VL-06.

RS-232 cable
  • RS-232 cable
  • 024.25.00.000
  • RS-232 cable
  • 024.25.00.000

For connecting the instrument to the computer network or laptop (length - 1.5 m).

Nozzle No.12
  • Nozzle No.12
  • 009.11.00.000
  • Nozzle No.12
  • 009.11.00.000

For installation of DP21 linear movement transducer on VE or VES type (or other type) high-voltage circuit breakers.

Interface adapter
  • Interface adapter
  • 026.20.00.000
  • Interface adapter
  • 026.20.00.000

The user can purchase current clamps from any manufacturer to measure the current of the circuit breaker closing or control coils.

The interface adapter is required to connect any current clamps to the device.

Recommendation: The nominal test current of the current clamps should be greater than the maximum currents of the current circuits to be tested.

Attaching clamp No.20
  • Attaching clamp No.20
  • 010.17.00.000
  • Attaching clamp No.20
  • 010.17.00.000

Installed instead of housing below the drive for fixing of DP12 linear movement transducer to VGU and similar type high-voltage circuit breakers.

Fixing bracket No.22
  • Fixing bracket No.22
  • 010.14.00.000
  • Fixing bracket No.22
  • 010.14.00.000

Installed on the axis of the main movable contact of VE or VES type high-voltage circuit breakers. After that DP21 linear movement transducer is attached to the brackets.

Bushing №54
  • Bushing №54
  • 010.38.00.001
  • Bushing №54
  • 010.38.00.001

To install the angular movement transducer DP21 to the high-voltage circuit breaker VBP-10 and the similar.

Laptop
  • Laptop
  • Laptop

For PKV/М7 control from computer as well as for measurement data processing in a special software.

Manipulating rod
  • Manipulating rod
  • 010.41.00.000
    010.41.00.000-01
    010.41.00.000-02
  • Manipulating rod
  • 010.41.00.000
    010.41.00.000-01
    010.41.00.000-02

Manipulating rod is designed for test cables connection from the ground or from the tank cover to the bushings of high-voltage circuit breakers, and to the structural elements of high-voltage disconnecting switches and earthing devices, without the use of ladders or elevated platforms.

The manipulating rod is completed with special extension cables. There is a Kelvin clamp with current and potential contacts to connect to the object on one side, and a contact pad on the other side. The device test cable is connected to the contact pad from the ground or a tank cover.

Manipulating rod extension cable is made according to a four-wire (Kelvin) scheme with the test current capacity of 100 A in the presence of a good contact.

Circuit breaker analyzer PKV/M7
Circuit breaker analyzer PKV/M6N
  • Open Original

    Sibir-Polymetals, JSC

    The instrument is small and easy to use. We consider instrument best functions to be the ability to measure circuit breaker parameters in one cycle and the ability to view the measured data on the instrument screen. With the help of PKV/M7 instrument, we were able to detect the jam in the switching core of VGT-110 circuit breaker electromagnet on 110/6 Poteryaуvskaya electrical substation. With the help of the instrument, it was possible to detect the malfunction quickly.

    Based on the experience of PKV/M7 operation, we can recommend other organizations to use it.

    A.A. Kolesnikov
    Best wishes, Chief Engineer

  • Open Original

    Tatarstan Electrical Grids

    In Tatar grids, the branch of RES, JSC, PKV/ M7 instrument manufactured by SKB EP, has been operated since February 2021.

    This instrument is widely used for non-demountable control of speed and travel parameters, time characteristics of oil-blast circuit breakers (VMT-110, S-35, VM-35, VT-35, VMG-10, VMP-10, VMG-133, VK-10, VKE-10) and vacuum circuit breakers (VVTE-10, BB/TEL-10).

    PKV/M7 has showed itself to advantage, when demonstrating reliability, stability, ease of operation. It has high measurement precision and small dimensions.

    PKV/M7 instrument allows you to measure a number of important circuit breakers parameters in one cycle (penetration, time difference, speed, time, etc.), which significantly reduces the time for assessing circuit breakers condition and repairing equipment.

    We recommend PKV/M7 to organizations engaged in maintenance, diagnostic and repair of high-voltage circuit breakers.

    D.V. Zhurkin
    Head of power stations Department

  • Open Original

    Tyumen Vodokanal, LLC

    Currently, in the electrotechnical laboratory of Tyumen Vodokanal, LLC PKV/M7 instrument is in operation. This equipment is used to analyze the condition of 6-10 kV oil-blast, vacuum circuit breakers. The instrument is convenient for us to use (5 stars out of 5). The following malfunctions were detected with the help of the instrument:
    - non-simultaneous closing of pole contacts;
    - the closing speed of switching devices was less than allowable according to the normative technical documentation.

    PKV/M7 instrument is recommended for use by other organizations.

    V.A.Gursky
    Chief Engineer

  • Open Original

    Kazakhstan Electricity Grid Operating Company (KEGOS), JSC

    Nowadays, KEGOC, JSC uses 28 instruments produced by SKB EP, LLC to check electrical equipment parameters and find defects (PKV - 15 pcs., MIKO - 10 pcs., PKR - 2 pcs., PUV- 1 pcs.).

    PKV/M7 instruments are actively used to measure speed and time parameters of high-voltage circuit breakers of all types and voltage classes. PKV/M7 software makes it possible to create and maintain an archive of measurements, including the ability to enter factory test data, consequently, that allows you to conduct a primary analysis of the equipment diagnostic results directly at the workplace. 

    MIKO instruments have been used for ten years. Besides simplicity in operation and small dimensions, they have proven themselves to be precise and reliable tools in measuring contact resistance to electric current. During operation, it is used on almost all equipment with a voltage above 10 kV. The instrument is convenient to operate, easy to handle and has an autonomous power supply.

    PKR-2M instruments have been used since 2019. The use of this instrument allows you to significantly reduce the time spent on the repair of the autotransformer and spent resources, because the switch is analyzed without opening, draining the oil and disassembly of the contactor. The presented information is very convenient as well as the storage of measurement results in graphical or tabular form in the instrument memory.

    Based on operational experience, KEGOC, JSC recommends instruments manufactured by SKB EP, LLC to organizations working in the electrical equipment maintenance and adjustment.

    B. Arystanov
    Director of Operations Department

  • Open Original

    Volgogradenergo, Rosseti South

    MIKO-10 is quite easy to use. It has a convenient menu and a built-in autonomous power supply unit.

    Good specifications, digital display of the instrument allow measurements to be carried out with high precision.

    The main advantages of PKV/M7 are: high build quality; high functionality for circuit breakers characteristics control; detection of defects without disassembly of circuit breakers; built-in control unit for electromagnets of a circuit breaker drive; convenient control panel and display; functionality to control many parameters in one test cycle.

    A.M.Isaev
    Acting First Deputy Director

  • Open Original

    MAEK Kazatomprom, LLP

    The small instrument MIKO-2,3 is convenient for measurements due to its light weight and dimensions, especially when working on circuit breakers U-110 and MKP-110. When placing the instrument directly on bushings of the circuit breaker, one person is involved in this process. Reliable wire fasteners are attached to circuit breaker bushings. High measurement accuracy, the use of two different power supply systems of the instrument (mains and battery) expand the use of the device.

    PKV/M7 has shown itself as a reliable, affordable and fairly accurate instrument.

    The use of PKV/M7 instrument halves the time for taking parameters of a circuit breaker, because all measurements are performed in one cycle, which allows you to quickly assess the equipment technical condition.

    I.P.Chernetsky
    Chief Engineer

  • Open Original

    Belaruskali, JSC

    PKV/M7 instrument allows you to take a variety of parameters (speed, time) of circuit breakers and detect defects of equipment without disassembly, to plot graphs based on the parameters. These are the pluses of this instrument.

    The instrument operation requires care and accuracy while making measurement methods at the early stage. The skills of systematization of measurements appear and the speed of testing increases after regular use.

    The measurement method is simple and clear. A good function of the instrument is the ability to plot graphs of circuit breaker closing and generating data on a personal computer.

    The following defects were identified when testing 6kV oil-blast circuit breakers: incorrect operation of a circuit breaker buffer, non-simultaneous closing of phases, wear of insulating rods.

    I. A. Podlesny
    Chief Engineer

  • Open Original

    Severstal, PJSC

    Severstal, PJSC has been successfully using 2 PKV/M7 high-voltage circuit breaker analyzers in its professional activities since 2011 (the second instrument since 2018).

    The advantages of the instrument are simplicity and convenience in operation, small weight and dimensions, the ability to carry out a complex switching cycle, save the template of a circuit breaker, as well as the ability to transfer data to Flash-memory.

    During operation, the instruments has shown themselves to advantage, there were no problems and malfunctions.

    SKB EP instruments are recommended for use by organizations operating high-voltage equipment.

    Dmitriev R.A.
    Chief Electrician

  • Open Original

    TECHTRANS, LLC

    With the help of this instrument we carried out measurements and diagnostic of vacuum circuit breakers (BB/TEL-10, SION ZAE5, EasyPact EXE, SIMENS ZANZ): SF6 type (VEB-UETM-110).

    PKV/M7 instrument established itself from the best side. It is simple and convenient in operation, and has a high measurement accuracy at the same time. Its use allows you to significantly save time for electrical equipment diagnostic and improve the quality of repair and diagnostic.

    The advantages of PKV/M7 are: reliability; simplicity and ease of use; small weight and dimensions of instruments; PKV/M7 design in a shatterproof housing, that is very important for constant transportation and operation in the field.

    Agaev P.M.
    Director

  • Open Original

    Kumerautskaya CHP, LLC

    We inform you that the instrument PKV/M7 (prod. N2 53, 2012), milli-ohmmeter MIKO-8M (prod. N2 035J, 2018) manufactured by SKB EP, LLC (Specialized Design Bureau of Electrotechnical Instrumentation, LLC) are in operation at Kumerautskaya CHP, LLC.

    With the PKV/M7 instrument, diagnostic and checking of electrical characteristics of high-voltage circuit breakers are carried out at the station, and the MIKO-8M milli-ohmmeter is used to measure DC resistances of windings and coils of electrical equipment, contact resistances of high-voltage circuit breakers and electrical equipment.

    Owing to the fact that the instruments are realized on the basis of microprocessor technologies, it has become much more convenient and efficient to carry out measurements, the accuracy of measurement results and safety have increased, and archiving has become possible.

    E.A. Shevchenko
    Deputy Chief Engineer - Head of the Technical Department of Kumertautskaya CHP, LLC

We use cookies. By continuing to browse the site, you agree to the processing of your personal data and the Privacy policy.