HV instrument transformers or high voltage instrument transformers are designed to measure and convert high current and high voltage to low current and low voltage according to the transformer ratio. HV instrument transformers are used in AC systems for the measurement of electrical quantities, such as current, voltage, power, energy, power factor and frequency. HV instrument transformers are essential constituents for the safe and efficient operation of a transmission network. Service station voltage transformers, inductive voltage transformers, current transformers and combined current/voltage transformers are designed to form HV instrument transformers. They provide reliable and accurate voltage and current measurement for connected equipment, such as protections relays, meters and other devices. They are used for specific applications, such as in maintaining reasonable accuracy reading up to extreme fault level condition or to operate accurately at steady state conditions.
HV instrument transformers consist of high dielectric strength and are used for isolation, monitoring as well as controlling operations in power grids. They are used for protective relaying purposes and system protection as well as economic management of industrial loads. High voltage instrument transformers also provide insulation between high voltage power circuits and the measuring instrument. They also save cost for the additional insulation of circuits for operator safety. Additionally, these transformers offer an option for connection of several instruments from the transformer to the power system. High voltage instrument transformers are mainly of two types, namely current transformers and voltage transformers. Current transformers are used to step down the current of the power system to a lower level, which is measured by a small rating ammeter. Whereas, voltage transformers are used to step down the voltage of a power system to a lower level so that it can be measured by a voltmeter.
Increased demand for electricity from emerging economies, such as countries in South East Asia and increased focus on power generation and distribution are propelling demand for HV instrument transformers. These transformers provide optimum quality electricity by reducing losses, which is a major factor driving their growth globally. Moreover, the average life span of high voltage instrument transformers will translate to an increased replacement rate, which will propel the HV instrument transformers market. However, these transformers also pose certain limitations, such as their limited core volume for current measuring and their compatibility with only AC current. These limitations can act as restraints to the HV instrument transformer market and may hamper growth.
Segmentation of the HV instrument transformers market on the basis of types: Current Transformers, Voltage transformers, Combined Metering Unit, Capacitor Voltage Transformers, Power Voltage Transformers, XD/GE Instrument Transformers, Others; Segmentation of the HV instrument transformers market on the basis of end use industry: Electrical Power and Distribution industry, Mining and Metallurgical industry, Petrochemical industry, Construction industry Segmentation of the HV instrument transformers market on the basis of voltage range:, 10 to 100 KV, 100-250 KV, 250-500 KV, Above 500 KV; Segmentation of the HV instrument transformers market on the basis of insulation: Gas Insulated Transformers, Oil/ paper Insulated Transformers
Asia Pacific holds a major share of the global HV instrument transformers market, followed by North America and Europe. Asia Pacific accounts for a significant share, due to the substantial growth in electricity consuming sectors in this region. Rapid urbanization and industrialization in many major countries in the region, such as China and India is also expected to boost the market growth of HV instrument transformers over the forecast period. The market in the rest of the world is estimated to account for a relatively small share over the forecast period.
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