Transformer OLTC diagnostic system PKR-2

OLTC maintenance check

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Resistor type OLTC contactor switchover oscillography

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Circular diagram recording of the resistor and reactor type OLTCs

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Automatic self-adjustment to OLTC

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Reactor type OLTC check in "static" mode

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Ergonomic probes or crocodile clamp cable

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Storage, transfer and analysis of measurement results

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High safety level during operation

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The instrument is represented in two modifications

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PKR-2 is intended for demountable diagnostics of OLTC of all types (both resistor and reactor type) being a part of and not included in a power transformer.

PKR-2 enables diagnostic of OLTC devices manufactured by: Huaming, MR, ABB, Hyundai Heavy Industries-Bulgaria.

Watch detailed video-reviews about PKR-2 OLTC-analyzer up above or on our YouTube: watch videos and subscribe.

The switchover oscillography enables to detect the actuation delay, non-simultaneity of in phase actuation and bouncing during switchover.

All characteristics are taken:

PKR-2 is completed with a special transducer for circular diagram recording. Its interface with shafts of different drives is provided with a set of axes and bushings, which are installed without any tools by simply putting on the shaft protrusion.

All characteristics are taken:

No additional elements (for example, resistors) or knowledge of resistances of current-limiting resistors of the checked OLTC device are required to measure the parameters. All adjustments to a specific OLTC are performed automatically in the instrument.

Reactor OLTCs can be checked in a static mode with the help of PKR-2 device. The user rotates the drive shaft with the handle from the standard complete set in slow motion. And at this time the moments of contacts closing / opening are displayed on the display of the device in degrees and in values of voltage and current.

For the convenience of direct connection to the contacts of the OLTC, when the tank is opened with partial or complete oil drain, PKR-2 is equipped with special long probes.

Without contact probes connection to the OLTC can be done by using a cable with crocodile clamps. In this case, partial or complete oil drain should be carried out from the contactor tank, or OLTC should be completely removed from the transformer tank.

The instrument is equipped with a large sensor color graphic display that enables to represent information in graphical or tabular form. High brightness and contrast make it easier to process the graphs.

Measurement results are stored in the non-volatile memory of the instrument, or they may be transferred to the PC.

Moreover, the instrument may be controlled by instrument keyboard, sensor display, or PC. The last mentioned function allows you to record diagrams while sitting with a PC in a car, which is important and comfortable during the cold season.

The instrument meets the electromagnetic compatibility requirements to Class A equipment according to GOST R 51522.1-2011.

The instrument meets the safety requirements to electric control and measuring instruments and laboratory equipment according to GOST R52319-2005.

  PKR-2 PKR-2M
OLTC check mode
demountable
demountable and non-demountable (DRM method)*
Built-in battery supply
none
available
(operation time from 2 to 16 h)

*Non-demountable check mode enables to conduct the in-place diagnostic of OLTCs with current-limiting resistors without opening the contactor tank cover. This mode is based on the DRM method (Dynamic Resistance Measurement) and consists in measurement of current intensity through the winding, in which the OLTC is switched on.

规格

Additional complete set (on order)

照片 项目,索引 应用
Contact probes set in a special case
  • Contact probes set in a special case
  • SKB035.27.00.000
  • Contact probes set in a special case
  • SKB035.27.00.000

Contact probes 7 x 0.85 m for connecting to the OLTC contacts without or with partial oil drain. When assembled with an extension cable, the length increases to 1.55 m.
The probes are supplied in the convenient carrying case.

Axes for DP22 transducer fixation to the output shaft
  • Axes for DP22 transducer fixation to the output shaft
  • Axes for DP22 transducer fixation to the output shaft

Select the axis for DP22 transducer fixation to the output shaft:

  • Axis No. 1 - for OLTC drives of BUL type (SKB035.25.01.000);
  • Axis No. 2 - for OLTC drives of PDP, МА-1, МAK-1 types (SKB035.25.02.000);
  • Axis No. 3 - for OLTC drives of PDP, МА-1, MAK-1 types (SKB035.25.03.000);
  • Axis No. 4 - for OLTC drives of PDP, МА-1, MAK-1 types (SKB035.25.04.000);
  • Axis No. 6 - for OLTC drives of PDP-4U type (when a manual drive is used) (SKB035.25.06.000);
  • Axis No. 9 - for OLTC drives of PDP-4U type (when an electric drive is used) (SKB035.25.09.000);
  • Axis No. 7 - for OLTC drives of MZ-4.1, MZ-4.4 types (when the electric drive is used) (SKB035.25.07.000);
  • Axis No. 8 - for OLTC drives of MZ-4.1, MZ-4.4 types (when the manual drive is used) (SKB035.25.08.000);
  • Axis No. 11 - for OLTC drives of SMA-7 (SMS-China), ED 100/200 S, ED 100/200 S types (MR-Germany) (when the manual drive is used) (SKB035.25.11.000);
  • Axis No. 12 - for OLTC drives of SMA-7 (SMS-China), ED 100/200 S, ED 100/200 S types (MR-Germany) (when the electric drive is used) (SKB035.25.12.000);
  • Axis No. 13 - for OLTC drives of VAKUTAP type manufactured by MR (SKB035.25.13.000).

USB 2.0 A-B cable
  • USB 2.0 A-B cable
  • USB 2.0 A-B cable

For the instrument connection to PC (length – 1.8 m).

Software for DRM mode activation
  • Software for DRM mode activation
  • Software for DRM mode activation

Non-demountable diagnostic of OLTCs (DRM method) allows to check the technical condition of OLTCs with current-limiting resistors without removing contactor tank cover and oil draining.

To work in non-demountable mode (DRM method), it is necessary to purchase (activate) a software for DRM and order a short-circuit cable.

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 PKR-2
  • Main instrument PKR-2
  • SKB035.00.00.000
  • Main instrument PKR-2
  • SKB035.00.00.000

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

Test cable with a connector<br>and A, B, C pole cables
  • Test cable with a connector
    and A, B, C pole cables
  • SKB035.34.00.000
    SKB035.34.00.000-01
    SKB035.34.00.000-02
    SKB035.39.00.000
  • Test cable with a connector
    and A, B, C pole cables
  • SKB035.34.00.000
    SKB035.34.00.000-01
    SKB035.34.00.000-02
    SKB035.39.00.000

Connector cable 1 x 8 m.
A, B, C pole cables 3 x 1.5 m with jaw up to 25 mm.

This cable is used in the demountable diagnostic mode to connect to the contacts of the transformer OLTC inside the tank.

Angular movement transducer DP22
  • Angular movement transducer DP22
  • SKB035.26.00.000
  • Angular movement transducer DP22
  • SKB035.26.00.000

The transducer enables to measure the angle and speed of the OLTC shaft rotation. Angle measuring range – 2 - 360º (it is necessary to select an appropriate axis from the additional complete set).

C-clamp
  • C-clamp
  • SKB035.30.00.000
  • C-clamp
  • SKB035.30.00.000

To fix the DP22 transducer on the OLTC drive.

Handle
  • Handle
  • SKB028.25.02.000
  • Handle
  • SKB028.25.02.000

To fix the magnetic clamp.
Handle for the OLTC shaft rotation. It is used together with axis from the additional complete set.

Axis No.10 together with a bushing
  • Axis No.10 together with a bushing
  • SKB035.25.00.000
    SKB028.25.01.008
  • Axis No.10 together with a bushing
  • SKB035.25.00.000
    SKB028.25.01.008

Axis No. 10 for the OLTC drives of the MZ-4.1; M3.2; M3-4 type. For the drive of PDP-4U type this axis is used together with the bushing.

Axises for other drives are represented in the additional complete set.

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

For connecting the instrument to the power supply. Temperature range -15ºС - +45ºС (length – 2 m).

Ground cable
  • Ground cable
  • SKB010.01.00.000
  • Ground cable
  • SKB010.01.00.000

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

Fuses
  • Fuses
  • Fuses

Type VP2B-1V-2A (ВП2Б-1В-2А) (2 pcs) to protect the power source.

Tool bag
  • Tool bag
  • SKB126.06.00.000
  • Tool bag
  • SKB126.06.00.000

Robust, convenient, wear proof bag for transportation of cables, documentation, and other accessories to PKR-2. The bag is especially useful when the set is carried to an object, so that all the needed accessories are kept together.
Weight 0.6 kg.

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