Application range

The speed signal device is one of the most important parts of the single unit automation of the hydro generating unit. It is an essential link in the automatic operation and protection system of the unit.

The device adopts industrial grade single-chip microcomputer as the core control element, according to the domestic turbine generator of high reliability product design and production operation regulations of power units, products designed for hydroelectric power plant for industrial design, intelligent device speed, frequency control device of generator, frequency measurement signal from the terminal voltage transformer and speed measuring fluted disc.

Ø Working storage temperature：-25～+65℃；

Ø Ambient humidity：≤ 95%，Gel free。

Ø Power input：AC/DC220V（50/60Hz）Two way power supply；

Ø Power waste：Not greater than30W；

Ø Power input：The working power supply can be AC and DC common, and has strong adaptability to the power supply;

Ø LCD：Cancel the traditional digital display, the touch screen by clicking on the output frequency, the channel input frequency, percentage, speed channel fault code, contact characteristics, action records, the maximum speed can switch the display;

Ø Message logging：Record event message, including fault time and fault speed etc.;

Ø Parameter setting：Cancel the traditional button input, connect the computer through the back of the device and run the online software settings device parameters;

Ø External communication：Provide RS485 communication connections, remote communication devices, current frequency, and switch volume information;

Ø Frequency measuring input：Provide 1 way PT frequency measurement (from the machine terminal voltage transformer), 2 Road frequency measurement (taken from the speed gear disk);

Ø Analog output：Provide 1 analog voltage or current signal output for computer monitoring system for remote collection;

Ø Alarm output：Provide peristaltic alarm, zero speed alarm, custom more export alarm, device self alarm, frequency measurement loop fault alarm function, and custom, more export direction optional;

Ø Self-test function：The device has fixed value and hardware self-test function;

Ø Indicator light：17 indicating lights can indicate the current power state, the device running state, frequency measurement channel state, peristalsis alarm, zero speed alarm, self alarm and custom, and the more restricted exit alarm;

Installation method：The utility model has the advantages of beautiful appearance, opening and installation in the 19 inch standard frame.