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Monthly Archive for: «November, 2012»

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The Purpose Of Transformer Gas Relay

The transformer gas relay is a protective device installed on the top of oil-filled transformers. It performs two functions. It detects the slow accumulation of gases, providing an alarm after a… Read more

Nov 29, 2012 | Edvard

The Purpose Of Transformer Gas Relay

Inspection and Test Procedures for LV Cables

Visual and Mechanical Inspection Electrical Tests Test Values TABLE 100.12 – US Standard Fasteners – Bolt-Torque Values for Electrical Connections Compare cable data with drawings and specifications. Inspect exposed sections… Read more

Nov 27, 2012 | Edvard

Inspection and Test Procedures for LV Cables

Purpose of Miniature Circuit Breakers (MCBs)

Miniature circuit breakers (MCB) are primarily designed to protect cables and lines against overload (thermal) and short-circuit (electromagnetic). They thus care for protecting this electrical equipment against excessive temperature rises and destruction… Read more

Nov 24, 2012 | Edvard

Using Miniature Circuit Breakers (MCB)

HV Instrument Current Transformers in T&D

Electrical measurements on a high-voltage transmission and distribution systems cannot be made practically or safely with direct contact to the power carrying conductors. Instead, the voltages and currents must be… Read more

Nov 23, 2012 | Edvard

HV Instrument Current Transformers in Transmission and Distribution Systems

Few Words About Frequency Converters

Since the late 1960’s, frequency converters have undergone extremely rapid changes, largely as a result of the development of microprocessor and semi-conductor technologies and their reduction in prices. However, the basic principles of… Read more

Nov 21, 2012 | Edvard

Few Words About Frequency Converters

Wind power applications, Grid connected or not?

There are perhaps four distinct categories of wind power which should be discussed. These are: Small, non-grid connected Small, grid connected Large, non-grid connected Large, grid connected By small, we… Read more

Nov 20, 2012 | Edvard

Wind power applications, Grid connected or not?
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