SKB PKV/M7 Circuit Breaker anlizer | EMINKH.COM

SKB PKV/M7 Circuit Breaker anlizer

Name: SKB PKV/M7 Circuit Breaker anlizer
Brand: SKB EP

ManufacturerSKB EP(View more products from this manufacturer)

ModelPKV/M7

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Model : PKV/M7

Manuafacturer : SKB

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Maintenance check of oil, vacuum and SF6 breakers with up to 4 breaks

Maintenance check of switches of Soviet-, Russian- and foreign-manufactured (ABB, AREVA, ALSTOM, SIEMENS, etc.) circuit breakers:

Checkout of speed and travel parameters of oil, vacuum and SF6 high-voltage circuit breakers with 4 poles;
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 14A for DC/AC drives.

Diagnostics of domestic and foreign circuit breakers

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

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

Wide ranges of measurement by time (up to 5.1 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 and angular movement transducers.

PKV/M7 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. Moreover, laser transducer is installed by sight without any fixing devices which contributes to bigger measurement errors.

High measurement accuracy

High measurement accuracy when measuring time characteristics (±0.1 ms), as well as travel and speed characteristics is ensured by digital angular and linear movement transducers with the accuracy grade of 0.09° and 0.5 mm. Potentiometer-based transducers usually used in other instruments similar to PKV/M7 have poor accuracy (of up to 1%) even in normal conditions. With the maximum travel of 900 mm. it gives measurement uncertainty of ±9 mm.

Automatic calculation of technical characteristics of high-voltage circuit breakers

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 the 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.

The type of graphs is defined by the state of all parts (levers, springs, drafts, axes, cross-arms, damper, etc.) of the kinematic chain of the mechanism regulating opening-closing of circuit breaker contacts. Malfunction of any part of the mechanism (play increase, spring slackening, excessive friction, damper failure, etc.) immediately changes the type of graph from the normal type meant for properly functioning circuit breaker. SKB EP has developed a special method of graph analyzing which when applied provide for early in-place diagnostics of the state of the circuit breaker.

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

PKV/M7 switch allows for monitoring of circuit breakers both in simple and compound cycles of switching with electromagnet currents of up to 14А (direct and alternate) with setting of the required duration of impulses of switching close/open and pause/delay of switching open.

Special mode “ruler/angle meter” simplifying the process of circuit breaker adjustment

It is often required to check circuit breakers by performing their switching on not from the drive but, for instance, from a jack. For this purpose PKV/M7 has a mode “ruler/angle meter”, in which the instrument shows real-time value of circuit breaker travel (shaft turn angle) or the status of contacts (close/open).

Proper operation in all weather conditions

If you have to carry out diagnostics 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 to +50°С.

Specifications	Value
Number of channels for circuit breaker contacts monitoring, pcs.	4
Range of measurement and recording of time intervals, sec	0.002 ÷ 5.2
Maximum permissible intrinsic error of time interval measurement, ms	±[0,1 + 0,0001*Тх],where Тх – measured time interval
Range of linear movements measurement by DP12 transducer, mm	0.5 ÷ 900
Resolution of linear movements measurement by DP12 transducer, mm	0.5
Maximum permissible intrinsic error of linear movements measurement by DP12 transducer, mm	±1
Range of angular movements measurement by DP21 transducer, degree	0.09 ÷ 360
Resolution of angular movements measurement by DP21 transducer, degree	0.09
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	0,002 ÷ 20
Maximum permissible intrinsic relative error of speed measurement by DP12 transducer in the range of 0.02 ÷ 10 m/sec, %	±2
Power switch cycles	"Open", "Close", "Open-Pause-Close", "Close-Delay-Open", "Open-Pause-Close-Delay-Open
Range of current measuring for switch on/off channels (peak value), А	±14
Response level of power switch current protection, А	15 ÷ 20
Range of voltage measurement on "Switch voltage" input (peak value), V	±350
Range of voltage measurement by "Analog input" channel (peak value), V	0 ÷ 12 (monopolar mode), ±6 (bipolar mode)
Resistance range of "Analog input" channel, Ohm	0 ÷ 160 Ohm; (output current of 60 мА); 0 ÷ 2500 Ohm (output current of 4 мА)
Types of data transfer channels	RS-232C, RS-485, USB, Ethernet IEEE 802.3
Maximum consumed power, W	60
Operation temperature range, ºС	-20 ÷ +50
Maximum measuring unit weight, kg	7
Dimensions, mm	360х290х165
Interface language	English
User manuals language	English
Calibration interval, year	3

Standard complete set

Photo	Item, Index	Application
	PKV/М7 measuring unit SKB026.00.00.000	Instrument and accompanying documents: calibration certificate, operation manual, record book, software / user manual.
	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 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 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 SKB010.06.00.000-01	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(4 pcs.) SKB010.05.00.000	For connecting to the pole 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.) 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.
	Switch input voltage cable SKB026.15.00.000	For commutated voltage supply. Rated current – 50А. Cable insulation – silicone (length – 2 m).
	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).
	Local start cable SKB026.16.00.000	For connecting to the high-voltage circuit breaker drive. Equipped with alligator type clamps. Rated current – 50А. Cable insulation – silicone (length – 2.5 m).
	Resistance measurement cable SKB026.18.00.000	For measuring resistance in the range between 0 ÷ 240 Ohm and 0 ÷ 2.5 kOhm. Equipped with M5 screw end caps (length – 2.5m).
	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 SKB024.26.00.000	For connecting the instrument to the computer network or notebook (length – 2 m).
	Ground wire SKB010.01.00.000	For PKV/M7 case grounding. Equipped with a ground clamp and screw end cap. Rated current – 50А (length – 1.75 m).
	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 / VP2B-1V-10А cut-outs	For power source protection (2 + 2 pcs.).
	Attachment devices set kit SKB126.06.02.000
	Cable carrying case SKB126.06.00.000

Additional complete set (on order)

Photo	Item, Index	Application
	PKV/М7 verification	Verification of PKV group is performed in Irkutsk only
	Measuring stick SKB012.03.00.000/-01	Measuring stick in a box. Used together with linear movement transducer DP12 (length - 550 mm or 1,000 mm // 700 mm in standard complete set).
	Transducer cable SKB010.06.00.000	For connecting linear (DP12) or angular (DP21) movement transducer to the instrument. Cable insulation – silicone (length – 12 m // in standard complete set – 7 m).
	Power cable adapter SKB010.25.00.000/-01/-02	Power cable adapter with a rectifier up to 32А (embodiment 2). Connecting to the network with a europlug. Temperature range: -25ºС ÷ +40ºС (length – 2 m, 5 m, 10 m).
	Cable for voltage measurement by "Analog input" channel SKB026.19.00.000	For measuring voltage in the range between 0 ÷ 12V and -6 ÷ +6V. Equipped with М5 screw end caps (length – 2.5 m).
	RS-232 cable SKB024.25.00.000	For connecting the instrument to the computer network or notebook (length - 1.5 m).
	Clamp meters SKB026.21.00.000	For measuring currents of electromagnets and solenoids. Supplied complete with a coupler. Current of up to 600А (cable length – 2.5 m).
	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.
	Notebook	For PKV/М7 control from computer as well as for measurement data processing in a special program.
	DP32.1 variable-resistance linear movement transducer SKB026.22.00.000	For measuring linear movements of moving parts of vacuum circuit breakers with open insulating housing in the range of 25 mm.
	Fixing device No.49 СКБ010.33.00.000	For fixing of DP32.1 transducer position behind the movable contact of the arch chute with diameter of up to 25 mm.
	Board No.2 SKB010.11.00.000	For fixing of DP32.1 transducer position behind the insulating frame of VVTE-M-10 vacuum circuit breaker pole.
	Attaching clamp No.20 SKB010.17.00.000	Installed instead of housing below the drive for fixing of DP12 linear movement transducer to VGU and similar type high-voltage circuit breakers.
	Nozzle No.12 SKB009.11.00.000	For installation of DP21 linear movement transducer on VE or VES type (or other type) high-voltage circuit breakers.
	Fixing bracket No.22 SKB010.14.00.000	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.