SKB PKV-U3.0 断路器分析仪(20通道)

Model : PKV-U3.0

Manuafacturer : SKB

Origin: Rusian




Comparison PKVU3.0, PKVM7 vs TM1800

Maintenance check of oil, vacuum, sulfur-hexafluoride (SF6) and air-blast circuit breakers for all voltage classes from 10kV to 1,050kV
  • checkout of speed and travel parameters of oil, vacuum, SF6 and air-blast circuit breakers with up to 20 breaks per pole;
  • checkout of time characteristics of high-voltage disconnecting, isolating and short-circuiting switches;
  • measuring of electromagnet currents and voltages and solenoid heavy currents with the help of clamp meters;
  • built-in remote control for setting of ordinary operations and compound cycles for circuit breakers with the current of up to 35A for DC/AC drives;
  • large-scale software.
Diagnostics of domestic and foreign circuit breakers

PKV/U3.0 is complete with attachment devices for the installation of measuring transducers on all types of Russian- and foreign-manufactured high-voltage circuit breakers (ABB, AREVA, ALSTOM, SIEMENS, etc.).

If attachment of linear movement transducer is not envisaged for high-voltage equipment, you can use angular transducer 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.

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

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.

Checkout of travel and speed parameters by three phases simultaneously

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 switching 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.

Standard complete set of PKV/U3.0 includes linear DP12 (1pcs.) and angular DP21 (1pcs.) movement transducers. In order to check parameters by 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.

Wide ranges of time intervals, speed and travel measurement covering the needs for monitoring of existing circuit breakers

Wide ranges of measurement by time (up to 8.1 sec), speed (up to 20 m/sec) and travel (up to 900 mm), covering the needs for monitoring of all existing high-voltage circuit breakers. For instance, the smaller time range of similar instruments does not allow for monitoring the operation of circuit breakers in compound cycles.

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

Thus, if the advertisement of the instrument indicates that it can perform monitoring, for instance, of vacuum or oil circuit breakers but no transducer is included in the instrument kit, it means that monitoring of time characteristics only is envisaged.

PKV/U3.0 is supplied with incremental (discrete) transducers for measurement of speed characteristics 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 rope transducers, for instance, have a limited upper value for speed. Pull-back 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.

Automatic calculation of technical characteristics of high-voltage circuit breakers

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 expanded set of time, travel and speed characteristics both for drive shaft and contacts as well as of voltages and currents of electromagnets and solenoid of the drive: time diversity, bounce durability, delay, rebound and transfer, medium velocities at various sections of travel, etc.

Apart from numerical data this instrument provides graphical results which allow detecting of incipient defects

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.

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

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 compound cycles "Open-Close", "Close-Open", "Open-Close-Open".

PKV/U3 is represented in two modifications

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.





Number of variable-resistance transducer channels



Number of movement transducer channels



Number of movement transducers in the set

DP21 (up to 3 pcs.)
and DP12 (up to 3 pcs.)

DP21 (1 pcs.)
and DP12 (1pcs.)

Circuit breakers subject to verification


all, except for VO-750, VO-1150, VNV-1150

Simultaneous measuring of basic shaft turn angle and drive arm turn angle and pole


not available



Number of discrete channels for circuit breaker contacts monitoring, pcs.


Range of measurement and recording of time intervals, sec

0.004 ÷ 8

Maximum permissible intrinsic error of time interval measurement, ms

±[0.1 + 0.0001*Тх], where Тх – measured time interval

Number of channels of incremental movement transducers, pcs.

3 (for DP12 or DP21 transducers)

Range of linear movements measurement by DP12 transducer, mm

0.5 ÷ 900

Resolution of linear movements measurement by DP12 transducer, mm


Maximum permissible intrinsic error of linear movements measurement by DP12 transducer, mm


Range of angular movements measurement by DP21 transducer, degree

0.09 ÷ 360

Resolution of angular movements measurement by DP21 transducer, degree


Maximum permissible intrinsic error of angular movements measurement by DP12 transducer, mm

±[0.2 + 0.001*a], where a – measured movement

Range of moving speed measurement, m/sec

0.02 ÷ 20

Maximum permissible intrinsic relative error of speed measurement by DP12 transducer in the range of 0.02 ÷ 10 m/sec, %


Maximum commutated current (actual value), А


Response level of power switch at short-circuiting and excessive current (peak value), А

58 ± 8

Current measuring range (peak value), А


Range of measured voltages of switch voltage channel (peak value), V


Range of voltage measuring by shunt voltage channel (peak value), mV


Voltage measuring range for “Input 1” and “Input2” channels, V

0 ÷ 12 (monopolar mode), ±6 (bipolar mode)

Resistance measuring range for “Input 1” and “Input2” channels, Ohm

0 ÷ 2400 Ohm; (output current of 4 мА); 0 ÷ 160 Ohm (output current of 60 мА)

Maximum consumed power, W


Operation temperature range, ºС

-15 ÷ +40

Maximum measuring unit weight, kg


Dimensions, mm


Interface language


User manuals language


Calibration interval, year



Standard complete set
Photo Item, Index Application
PKV/U3.0 measuring unit PKV/U3.0 measuring unit SKB021.00.00.000 Instrument and accompanying documents: calibration certificate, operation manual, record book, software / user manual.
Linear movement transducer DP12 Linear movement transducer DP12 SKB012.00.000-02 For measuring of moving parts movement in high-voltage circuit breakers (set includes data sheet and calibration certificate). Range – 0 ÷ 900 mm. Resolution – 0.5 mm. Used together with a measuring stick.
Measuring stick Measuring stick SKB010.15.00.000-02 Measuring stick in a box. 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 For measuring of shaft turn angle in high-voltage circuit breakers (set includes data sheet and calibration certificate). Measuring range – 0 ÷ 360°. Resolution – 0.09°.
Transducer cable Transducer cable SKB014.25.00.000 For connecting linear (DP12) or angular (DP21) movement transducer to the instrument. Cable insulation – silicone (length – 12 m).
Mains cable Mains cable SKB018.09.00.000 For connecting the instrument to the power line. Temperature range – 25°С ÷ +45°С. Rubber insulation (length – 2 m).
LAN cable LAN cable SKB024.26.00.000 For connecting the instrument to the computer network or notebook (length – 2 m).
RS-232 cable RS-232 cable SKB024.25.00.000 For connecting the instrument to the computer network or notebook (length - 1.5 m).
Switch input voltage cable Switch input voltage cable SKB022.06.00.000 For commutated voltage supply. Rated current – 50А. Cable insulation – silicone (length – 2 m).
Local start cable Local start cable SKB022.07.00.000 For connecting to the high-voltage circuit breaker drive. Equipped with alligator type clamps. Rated current – 50А. Cable insulation – silicone (length – 2.5 m).
Remote start cable Remote start cable SKB021.26.00.000 For remote start of measuring processes of the instrument. Connected to the drives of high-voltage circuit breaker electromagnet. Rubber insulation (length – 5 m).
А, В, C, D poles cables (4 pcs.) А, В, C, D poles cables (4 pcs.) SKB010.05.00.000/-01/-02/-06 For connecting to the poles of high-voltage circuit breaker. Equipped with alligator type end caps. Cable insulation – silicone. Throat Ø - 30 mm (length – 11 m).
Cable end caps (8 pcs.) Cable end caps (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 through alligator type end caps.
Pole cable (20 channels) Pole cable (20 channels) 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 For checkout of resistance-variable transducers of air-blast circuit breakers. Cable has 10 pairs of M5 screw end caps. Cable insulation - silicone (length – 2.5 m).
Shunt voltage measuring cable 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).
Ground wire Ground wire SKB022.08.00.000 For PKV/U3 case grounding. Equipped with a ground clamp and screw end cap. Rated current – 50А (length – 1.75 m).
Attachment devices set Attachment devices set For attachment of DP12 and DP21 transducers to various Russian-manufactured high-voltage circuit breakers (clamps, boards, connector adapters, etc.).
VP2B-1V-2А cut-outs (4 pcs.) VP2B-1V-2А cut-outs (4 pcs.) For power source protection.
Variable-resistance transducer cable (2 pcs.) 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).
Attachment devices set kit Attachment devices set kit SKB121.06.02.000  
Instrument carrying case Instrument carrying case SKB121.06.00.000  
Additional complete set (on order)
Photo Item, Index Application
  • 质量承诺
  • 正品保修
  • 送货到家
  • 交易简单化