Power System Equipment
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2T - Shunt Capacitor Bank Design and Protection Basics$30.00Learn MoreThis course is suitable for electrical engineers with a desire to understand the fundamentals of capacitor units’ operation and associated protection principles. Presented information cover issues related to technical implementation and exploitation of capacitor bank systems. Upon successful completion engineers will be able to address different capacitor bank systems, configurations and their protection schemes.
Contact Hours: 2 Hours - Technical
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6T- Harmonics and Inverters$90.00Learn MoreOverview
Static UPS are almost perfect electric generators. They have high reliability and, by nature, ensure (within the battery operation limits) the uninterrupted power supply. Regarding electrical features, the inverter (which is part of the UPS generator) possesses characteristics superior to those of the mains, in terms of frequency and voltage stability. The only doubtful feature is its ability to provide a sinusoidal voltage regardless of the shape of the current drawn by the load. The objective of this course is to elaborate this point and to show that modern inverters are excellent generators of sinusoidal voltage even when they supply non-linear loads. This is considered as normal since UPS devices are designed and very often utilised to supply computer/ microprocessor systems which draw non-sinusoidal currents.
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5T- Voltage Transformers$75.00Learn MoreVoltage Transformers
There are two types of voltage transformers, magnetic voltage transformers (VT) and capacitive voltage transformers (CVT). The magnetic voltage transformers are most economical for voltages up to about 145 kV and the capacitive voltage transformers for voltages higher than 145 kV. A CVT can also be used together with the Power Line Carrier (PLC) devices that are used for communication over the high voltage transmission circuits. Voltage transformers are together with current transformers known as instrument transformers. Voltage transformers are in most situations connected between phase and ground.
The standard that describes voltage transformers in details is IEC 186. The main functions of voltage transformers are:
- To transform voltages from high value to a value that can be easily handled by protection relays and instruments
- To insulate the metering circuit from the primary high voltage.
- To give standardization possibilities for instruments and protection relays to a few rated voltages
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5T- Low Voltage Switchgear$75.00Learn MoreOverview
Low-voltage switchgear is typically used name for metal-enclosed or metal-clad low- voltage power circuit breaker switchgear rated for 600V alternating current (AC) and below. The metal-enclosed switchgear is completely enclosed on all sides and top with metal sheets and has stationary primary power circuit switching or interrupting elements, or both, with buses and connections. The metal-clad low-voltage switchgear has removable circuit breakers which are housed in individual earthed metal compartments. There are two basic low-voltage switchgear types. They are indoor and outdoor types. Indoor switchgear consists of a front section containing circuit breakers, meters, protection relays and controls, bus section, and cable entrance section.
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