Universal HV circuit breaker analyzer PKV/U3.0

Monitoring the technical condition of circuit breakers of all types and for all voltage classes from 6 kV to 1150 kV

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Attachment devices for diagnostic of circuit breakers of all types

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Sufficient measuring ranges for time (up to 8 s), speed (up to 20 m/s) and travel (up to 900 mm) intervals

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Checkout of travel and speed parameters in three phases simultaneously

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Automatic calculation of technical characteristics of high-voltage circuit breakers

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More detailed information on the status of the circuit breaker can be extracted from the recorded graphs

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Monitoring of air-blast circuit breakers with the help of unique cable for 10 variable-resistance transducers

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

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PKV/U3 is represented in two modifications

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The device enables monitoring of time, travel, and speed parameters of moving parts of oil-blast, vacuum, air-blast, SF6, and electromagnetic circuit breakers up to 20 breaks as well as monitoring time characteristics of isolators and short-circuiting switches.

Additionally, PKV/U3.0 allows to register instantaneous values of currents and voltages of control electromagnets.

PKV/U3.0 is complete with attachment devices for the installation of measuring transducers on all types of high-voltage circuit breakers (ABB, AREVA, ALSTOM, SIEMENS, 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. If an attachment for a linear movement transducer is not provided at high-voltage equipment, you can use angular transducer with corresponding attachment devices instead. The instrument will automatically recalculate angular movement transducer readings to the travel of contacts.

A set for foreign-manufactured high-voltage circuit breakers (ABB, AREVA, ALSTOM, SIEMENS, etc.) is supplied on order.

For instance, the smaller time range of similar instruments does not allow for monitoring the operation of circuit breakers in complex cycles.

There is a number of nuances at measurement performance. For example, while registering of time parameters of any high-voltage circuit breaker is quite a simple process, receiving of travel and speed parameters can be performed only with the use of special linear or angular movement transducers.

PKV/U3.0 is supplied with incremental (discrete) transducers for measurement of speed and travel parameters which do not require adjustment or correction of conversion factors; these transducers provide accurate results and are convenient in service.

Instruments with wire cable-type transducers, for instance, have a limited upper value for speed. Return spring of these transducers does not have enough time to reel the wire rope onto the drum in case of rapid change of speed and measurement results become less accurate. It is not recommended to use laser movement transducers as there is a risk of eye damaging by the laser beam in case of mishandling. In addition, the installation of the laser transducer is made approximately and without clamps. This leads to a high error of the measurements.

In order to get complete and objective information on the state of a high-voltage circuit breaker, travel and speed parameters should be taken by each of its poles.

While performing measurement with one transducer, you have to measure travel parameters of each pole by switching from one pole to another performing three Close / Open operations. However, applying of three transducers simultaneously, which can be done with PKV/U3.0, will allow performing measurement process much quicker as only 1 switching Close/Open operation will be needed.

PKV/U3.0 modification allows simultaneous control in three phases due to the possibility to equip the instrument with additional movement transducers. Standard complete set of PKV/U3.0 includes linear DP12 (1pcs.) and angular DP21 (1pcs.) movement transducers. In order to check parameters in three phases simultaneously one more group of DP12 (2 pcs.) and/or DP21 (2 pcs.) as well as the required tool kit with all necessary accessories is supplied on order.

PKV/U3.0 is a measuring “brain” which performs all necessary calculations. In order to view the results of diagnostics you need to connect the instrument to a portable personal computer (PC) with special software allowing you to view and analyze the obtained results.

The numerical data are displayed on the PC (laptop) monitor in the form of a table with measured and calculated data 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 before pole contacts closing, snatch gap, action difference of travel, bouncing in travel, overshot, rebound);
  • Time parameters (circuit breaker make time, closing time of circuit breaker, pole closing time);
  • Speed parameters (closing speed, time difference of the contact action, bouncing in time).

Along with the tables of digital values of parameters more detailed information on circuit breaker condition can be obtained from the following registered graphs of processes:

  • relation between speed and time, speed and travel;
  • relation between electromagnet currents and voltages, and time and travel;
  • diagrams of contact opening-closing.

Automatic graphical overlay of circuit breaker phase cross-arms movement allows for accurate detection of such major defects as pole mechanism end play. It is particularly important for circuit breakers having one drive for three phases. Such defect cannot be detected using numeric data only. The state of the guide system also cannot be evaluated without viewing the graphs of moving parts movement process. It is also not possible to identify the node contributing to switch off delay using numeric data only. In this case the graph of speed against time of the process also provides comprehensive information as it is possible to separate the time of drive operation and operation time of mechanisms of the circuit breaker itself.

One of the main items subject to diagnostics at air-blast circuit breakers’ (VO-750, VO-1150, VNV-1150, VNV-500-40, VNV-500-65, etc.) operation monitoring is the measurement of nozzle actuator movement parameters (nozzle travel, movement start and end time, etc.).

For the purpose of monitoring of these parameters a rheostat the moving part of which is rigidly attached to the moving part of the drive is screwed into a special drive bore. When drive movement changes, resistance of the rheostat changes as well and this change is recorded by PKV/U3.0.

The cable for 10 variable-resistance circuit breakers is supplied in the standard complete set of the instrument.

PKV/U3.0 is equipped with a power switch for control of switching device drive with solenoid current of up to 35А (direct and alternating) which allows performing both simple switching close or switching open operations and complex cycles "Open-Close", "Close-Open", "Open-Close-Open".

One of the main characteristics of PKV/U3 is that it is produced in two modifications which differ in the number of channels of movement transducers (1 or 3) and number of channels of variable-resistance transducers monitoring (2 or 12): PKV/U3.1 and PKV/U3.0, correspondingly.

Thereby, PKV/U3.1 allows monitoring of all types of air-blast circuit breakers, except for models VO-750, VO-1150, VNV-1150, which is available in the other instrument version.

  PKV/U3.0 PKV/U3.1
Voltage class of tested circuit breakers
from 6 kV to 1150 kV
from 6 kV to 500 kV
Circuit breakers subject to testing
all all, except for VO-750, VO-1150, VNV-1150
Number of variable-resistance transducer channels 12 2
Number of movement transducer channels 3 1
规格

Additional complete set (on order)

照片 项目,索引 应用
Laptop
  • Laptop
  • Laptop

PKV/U3 is a measuring unit, all measurement results are shown on the laptop. Moreover, a special software for PC allows to control the instrument and perform more detailed analysis of diagnostics results.

Measuring stick
  • Measuring stick
  • SKB012.03.00.000/-01
  • Measuring stick
  • SKB012.03.00.000/-01

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

A set of DP12 linear movement transducer<br>(2 pcs.)
  • A set of DP12 linear movement transducer
    (2 pcs.)
  • SKB012.00.00.000-02
  • A set of DP12 linear movement transducer
    (2 pcs.)
  • SKB012.00.00.000-02

Availability of two additional transducers allows measurement of linear movement of moving of HV circuit breaker across three phases simultaneously (Passports and Calibration Certificates are enclosed). Range – 1 - 900 mm. Resolution is 0.5 mm. To be used together with a measuring stick. DP12 transducer (1 pcs.) is available in Standard complete set of PKV/U3.0.

A set of DP21 angular movement transducer (2 pcs.)
  • A set of DP21 angular movement transducer (2 pcs.)
  • SKB009.00.00.000
  • A set of DP21 angular movement transducer (2 pcs.)
  • SKB009.00.00.000

Availability of two additional transducers allows testing the travel and speed parameters of HV circuit breakers across three phases simultaneously (Passport and Calibration Certificate are enclosed). Measuring range – 0.2 - 360°. Resolution is 0.09°. DP21 transducer (1 pcs.) is available in Standard complete set of PKV/U3.0.

Cable for voltage measurement by
  • Cable for voltage measurement by "Analog input" channel
  • SKB021.28.00.000
  • Cable for voltage measurement by "Analog input" channel
  • SKB021.28.00.000

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
  • SKB010.25.00.000-01
    SKB010.25.00.000-02
  • Power cable adapter
  • SKB010.25.00.000-01
    SKB010.25.00.000-02

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).

DP32.2 variable-resistance linear movement transducer
  • DP32.2 variable-resistance linear movement transducer
  • SKB021.32.00.000
  • DP32.2 variable-resistance linear movement transducer
  • SKB021.32.00.000

For measuring linear movements of moving parts of vacuum circuit breakers with open insulating housing in the range of 25 mm.

DP-32.2 is supplied together with:
Fixing device No.49 for fixing of DP32.2 transducer position behind the movable contact of the arc extinguish chamber with diameter of up to 25 mm.
Pad No.2 for fixing of DP32.2 transducer position behind the insulating frame of VVTE-M-10 vacuum circuit breaker pole.

Current clamps
  • Current clamps
  • SKB021.31.00.000
  • Current clamps
  • SKB021.31.00.000

For measuring currents of electromagnets and solenoids. Supplied together with a coupler. DC of up to 600 A, AC of up to 400 A. Cable length – 2.5 m.

Bushing No.54
  • Bushing No.54
  • SKB010.38.00.001
  • Bushing No.54
  • SKB010.38.00.001

For installation of DP21 angular movement transducer on VBP-10 and similar types of high-voltage circuit breakers.

Manipulating rod
  • Manipulating rod
  • SKB010.41.00.000
    SKB010.41.00.000-01
    SKB010.41.00.000-02
  • Manipulating rod
  • SKB010.41.00.000
    SKB010.41.00.000-01
    SKB010.41.00.000-02

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.

Standard complete set

照片 项目,索引 应用
Main instrument PKV/U3.0
  • Main instrument PKV/U3.0
  • SKB021.00.00.000
  • Main instrument PKV/U3.0
  • SKB021.00.00.000

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

Linear movement transducer DP12
  • Linear movement transducer DP12
  • SKB012.00.000-02
  • Linear movement transducer DP12
  • SKB012.00.000-02

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

Measuring stick
  • Measuring stick
  • SKB010.15.00.000-02
  • Measuring stick
  • SKB010.15.00.000-02

Measuring stick in a case. 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
  • SKB009.00.00.000
  • Angular movement transducer DP21
  • SKB009.00.00.000

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

Transducer cable
  • Transducer cable
  • SKB014.25.00.000
  • Transducer cable
  • SKB014.25.00.000

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

А, В, C, D poles cables<br>(4 pcs.)
  • А, В, C, D poles cables
    (4 pcs.)
  • SKB010.05.00.000
    SKB010.05.00.000-01
    SKB010.05.00.000-02
    SKB010.05.00.000-06
  • А, В, C, D poles cables
    (4 pcs.)
  • SKB010.05.00.000
    SKB010.05.00.000-01
    SKB010.05.00.000-02
    SKB010.05.00.000-06

For connecting to the poles of high-voltage circuit breaker. Equipped with crocodile clamps. Cable insulation – silicone. Jaw Ø - 30 mm (length – 11 m).

Remote triggering cable
  • Remote triggering cable
  • SKB021.26.00.000
  • Remote triggering cable
  • SKB021.26.00.000

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
  • SKB022.07.00.000
  • Local triggering cable
  • SKB022.07.00.000

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

Control module input voltage cable
  • Control module input voltage cable
  • SKB022.06.00.000
  • Control module input voltage cable
  • SKB022.06.00.000

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

20-channel pole cable
  • 20-channel pole cable
  • SKB021.23.00.000
  • 20-channel pole cable
  • SKB021.23.00.000

For connection to the contacts of air-blast high-voltage circuit breakers. Equipped with М4 screw end caps (length – 1.2 m).

Cable for 10 variable-resistance transducers
  • Cable for 10 variable-resistance transducers
  • SKB021.24.00.000
  • Cable for 10 variable-resistance transducers
  • SKB021.24.00.000

For checkout of variable-resistance transducers of air-blast circuit breakers. Cable has 10 pairs of M5 screw end caps. Cable insulation - silicone (length – 1.2 m).

Variable-resistance transducer cable (2 pcs.)
  • Variable-resistance transducer cable (2 pcs.)
  • SKB021.27.00.000
  • Variable-resistance transducer cable (2 pcs.)
  • SKB021.27.00.000

For measuring resistance of variable-resistance transducers. Equipped with М5 screw end caps. Cable insulation – silicone (length – 2.5 m).

Shunt voltage measuring cable
  • Shunt voltage measuring cable
  • SKB014.27.00.000
  • Shunt voltage measuring cable
  • SKB014.27.00.000

For measuring the voltage of user-defined shunt when measuring heavy currents. Range – ±75 mV. Equipped with М5 screw end caps. Rubber insulation (length – 5 m).

Mains cable
  • Mains cable
  • SKB018.09.00.000
  • Mains cable
  • SKB018.09.00.000

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

Ground cable
  • Ground cable
  • SKB022.08.00.000
  • Ground cable
  • SKB022.08.00.000

For PKV/U3.0 case grounding. Equipped with a ground clamp and screw end cap. Nominal current – 50 А (length – 2 m).

LAN cable
  • LAN cable
  • SKB024.26.00.000
  • LAN cable
  • SKB024.26.00.000

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

RS-232 cable
  • RS-232 cable
  • SKB024.25.00.000
  • RS-232 cable
  • SKB024.25.00.000

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

Cable end caps for the M5 screw (8 pcs.)
  • Cable end caps for the M5 screw (8 pcs.)
  • SKB021.26.00.003
  • Cable end caps for the M5 screw (8 pcs.)
  • SKB021.26.00.003

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-2A (ВП2Б-1В-2А). For the power source protection.

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

Tool bag
  • Tool bag
  • SKB121.06.00.000
  • Tool bag
  • SKB121.06.00.000

Convenient, robust, wear proof bag for transportation of cables, documentation and other accessories to PKV/U3.0 instrument.
Weight 1.11 kg.

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