PART III

MASTER`SDEGREE STUDENTSINDIVIDUAL WORK

UNIT 1 REAL LOAD DIVISION

AIM OF THE UNIT:- to understand the advantage of a brushless generator

over a brush-type

TASKS

1 Do your best to answer the brainstorming question. 2 Read the text for general understanding.

3 Make up questions to the text. 4 Find the sentences with the new words in the text. Give the Kazakh or Russian

equivalents of the words.

5 Write sentences with the new vocabulary. 6 Make up exercises as in the UNIT 2 (Master`s degree students individual work with the teacher) page 210 (exercises for better remembering the topic). 7 Speak on the topic. Given schemes will help you to remember and understand

the topic.

8 Find more information about the topic and make up a project work on the topic.

Each current transformer is connected across auxiliary contacts on the associated generator's bus tie breaker and generator breaker. Should the bus tie breaker or the generator breaker be open, the auxiliary contact will short out the current transformer so that any voltage induced will cause a current to circulate within the current transformer. Should the bus tie and the generator breakers be closed, indicating that the entire ac power system is operating paralleled, the

auxiliary contacts are opened to allow all current transformers to be connected in a series loop where the load controller error detectors are parallel loads to the current transformers. Since all current transformers are connected in series, current will flow in the series loop as a result of voltages induced in the individual current transformers.

Using the current values assigned to the circuit it is found that the current circulating in the series loop is equal to five units, or the average current produced by all four current transformers.

Since five units of current circulates in the series loop each current transformer produces an amount which differs the average loop current, that difference will flow in parallel loads connected in the circuit. The five units of current in the loop enter the series-parallel circuit at overload generator.