SKB PKR-2 OLTC トランスの制御機器

The instrument is completed with a special transducer. 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 extension.

Based on the selector and contactor switching sequence circular diagram in case of forward and reversal travel, one may judge on the end play size and selector assembly quality.

All characteristics are taken simultaneously based on three phases for OLTCs located in the neutral conductor of "star-connected" windings, and single phase for OLTCs located in the line of "star-" or "delta-connected windings".

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

All characteristics are taken simultaneously based on three phases for OLTCs located in the neutral conductor of "star-connected" windings, and single phase for OLTCs located in the line of "star-" or "delta-connected windings".

Check conducted during the drive shaft slow rotation using a handle with simultaneous display of contact closures/openings in degrees and voltage and current values.

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

The instrument is completed with special long calipers to be conveniently connected to some OLTCs (in this case, it is not necessary to drain oil from the contactor tank).

The instrument may be connected to the on-load tap changer with measuring cables provided with alligator clips without contact calipers with oil being partially drained from the contactor tank or removal of the on-load tap changer from the transformer tank.

The instrument is equipped with a large color high-brightness and high-contrast display facilitating the graph processing.

The measurement results are stored in the non-volatile memory of the instrument, on the external flesh memory, and they may be transferred to the computer.

Therefore, the instrument may be controlled by the PC. It enables to measure diagrams being inside a car with the computer, which is important in winter.

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.

* In-place check mode enables to conduct the in-place diagnostics of OLTCs with current-limiting resistors with the contactor tank cover in place. This mode is based on the DRM method (see above) and consists in measurement of current intensity through winding, in which the OLTC is switched on.