XVC768115 3BHB7211R115 I/O control device ABB

Description

Overview

Essential details：XVC768115 3BHB7211R115 I/O control device ABB

Products Description

SYNCHROTACT® 5 is the fifth generation of synchronizing equipment produced by ABB Switzerland Ltd in Switzerland. SYNCHROTACT products from ABB are used for automatic synchronization of generators with power lines and for paralleling of synchronous lines. They are designed for fully automatic operation by dual-channel or single-channel systems.

Synchronizing equipment are used in power stations where a generator needs to be paralleled with a power line or in substations to parallel two synchronous lines. Power circuit breakers can only be closed if voltage at both ends is synchronous. If it is not, it will cause a disturbance in the power network, trip the breaker, shock the generator and unit transformer. In extreme cases, it can damage both.
SYNCHROTACT 5 guarantees a safe and reliable synchronization whether as a monitoring element for manual paralleling or as an independent fully-automatic synchronizing unit.
Application
SYNCHROTACT 5 covers the following areas of application:
1. Automatic synchronization and paralleling of generators with power lines (see Fig. 1 below),
2. Automatic paralleling for synchronous and asynchronous lines and busbars (see Fig. 2 below),
3. Monitoring (Synchrocheck) of automatic or manual paralleling of power lines, generators and voltage-free lines (dead bus), see Fig. 3 below.

XVC768115 3BHB7211R115

Definition
In synchronizing, the term “dual channel” applies to a configuration of two channels in series, in which one channel blocks the faulty operation of the other. This is to increase the safety of operation. The term “redundancy” applies to a configuration of two devices in parallel. If one fails the other one can take over the function. This is to increase the availability of the synchronizing system. Maximum safety in automatic and
manual operation
The safety of the generator and network, while synchronizing, is the first requirement for such an equipment. The safe automatic synchronization is guaranteed by a compact dual-channel system including two devices with independent hardware and software which are connected in series (see Fig. 4). The first channel performs the automatic synchronization and the other one is an independent monitoring (Synchrocheck) of the first one. The hardware and software of each channel is designed by different development engineers using different microprocessors which protect the operation from any possible systematic failure.
The safe manual synchronization is ensured by a monitoring device (Synchrocheck), which is in series with the manual paralleling switch (see Fig. 5).

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