ABB BCU-02 3AUA000010429 card module

ABB BCU-02 3AUA000010429 card module

Technical data of product parameters

The delay is used to BCU-02 3AUA000010429 achieve discrimination of the overcurrent
function. It is set according to the grading table for all the overcurrent units on the power system. The zone of protection of the
voltage controlled overcurrent function extends from the c.t’s
supplying it in the generator star-point to the location of the next
downstream overcurrent relay.Providing the overcurrent unit has picked up and the undervoltage unit picks up as well, the undervoltage unit “Hold-Voltage”
latches it in the pick-up state should the fault current fall below
its pick-up setting. The setting of the undervoltage unit must be
such that it can clearly distinguish between a normal load and aAn NPS current is usually caused by asymmetrical loading of the
three phases, but BCU-02 3AUA000010429may also be the result of an open-circuit phase
(single-phasing).
An asymmetrical load on a generator produces a magnetic field,
which rotates in the opposite direction to the positive-sequence
field. The negative-phase sequence flux induces currents in the
rotor and these result in additional rotor losses and increased
rotor temperature. The latter can represent a hazard for the rotor
and this is the reason for the NPS protection.
The asymmetry of the load on a generator is defined in terms of
the negative-sequence stator current I2, which is therefore the
quantity monitored.
The definite time NPS function is intended for systems where
asymmetries are of longer duration, but do not change frequently. This generally applies in the case of small to mediumsize generators. Two NPS stages are used, one for alarm and BCU-02 3AUA000010429
one for tripping.
The maximum continuous NPS current rating I2 is given by the
generator manufacturer usually as a percentage of the generator
rated current IGN.By detecting excessively high voltages, the overvoltage function BCU-02 3AUA000010429
prevents insulation breakdown of the windings of generator stators and power transformers and also excessive temperature
rise due to increased iron losses. Excessively high voltages of
longer duration are especially likely in the event of voltage
regulator failure. A time delay is set to prevent false tripping
during transients. Usually there are two voltage stages, both of
which are arranged to trip the protected unit.

Product picture display

bout us service idea

Since its inception, the company has always insisted on pure e-commerce mode of operation, reducing the intermediate links, for customers in the first time to provide quality products and satisfactory service, for your production and procurement work to provide ‘safe, fast and convenient’ the company has a sound logistics supply system, has established a good partnership with many well-known foreign brand manufacturers.

Email: onewwww@foxmail.com

Introduction to main products

Focus on DCS, PLC, robot control system and large servo system.

Main products: various modules/cards, controllers, touch screens, servo drives.

Advantages: supply imported original products, professional discontinued parts, fast delivery, accurate delivery time,

Main brands include ABB Bailey, GE/FANC, FOXBORO, Invensys TRICONEX, Bentley BENTLY, A-B Rockwell, Emerson EMERSON, OVATION, MOTOROLA, XYVOM, Honeywell HONEYWELL, Rexroth, KUKA, NI, DEIF, Yokogawa, Woodward WOODWARD, Ryan, Schneider SCHNEIDER, Yaskawa, Moog MOOG, PROSOFT and other brands

reminder

For more products, please contact the email for inquiry onewwww@foxmail.com

This article from the temporal Ming sheng automation equipment co., LTD.,

link: http:www.onewwww.com