Inductive voltage transformers EMF 145. Available in voltage classes ranging from 0.6 kV to 48 kV. The secondary voltage is typically configured for 120/240V (series parallel) operation. High voltage is required for power distribution related application. See also.
Transformer is the electrical device which consists of two different number of turns windings, which helps to level up or down voltage level. Nominal primary voltages range from 2.4kV to 15kV. Medium Voltage Control Power Transformers (CPT) are single phase transformers used to supply control power in medium voltage switchgear and transformers. An autotransformer is an electrical transformer with only one winding. They are intended to supply electrical measuring instruments, meters, relays or other electrical devices.
For example, it would not be economical to have an ammeter to measure 600 amps in a conductor directly. Applications Voltage and potential transformers can be used with voltmeters for voltage measurements, or with current transformers for wattmeter or watt-hour meter measurements. It is economical to have an ammeter to measure current over a range of 0–5 amps.
They convert alternating current from one voltage level to another to match the voltage supply to the electrical load. Instrumentation application:“Potential transformer” precisely scales dangerous high voltage to a safe value applicable to a conventional voltmeter. Isolation Transformer Isolation transformer does not convert any voltage levels. While being a completely static electrical device, dry type low voltage distribution transformers are versatile to benefit your application.
Voltage transformers for metering are provided with a defined accuracy for voltages of 80-120%. If the rated generator voltage is 13.8 kV, the IEEE specification of a voltage transformer for protection could be: 14400/120 V, 1.2 X (, 60 Hz).
If the alternating voltage at the primary of the transformer is 240V, then the voltage at the secondary of the transformer can be calculated using the following equation. Product Overview & Application. These are the most commonly used transformer types for all the applications. Now the voltmeter reads a precise fraction, or ratio, of the actual system voltage, its scale set to read as though it were measuring the voltage directly.
Medium Voltage Instrument Transformers. For 3P and 6P transformers it is 5-120%.
3. As the name states that, the secondary voltage is stepped up with a ratio compared to the primary voltage. in other words, Increase or decries the level of Current, while Power must be same. VP/VS = … The "auto" ... An example of an application of an autotransformer is one style of traveler's voltage converter, that allows 230-volt devices to be used on 120 volt supply circuits, or the reverse. The Primary voltage and the secondary voltage of an isolation transformer always remain the same. Instrument Transformers are transformers which convert high currents or voltages into measurable and standardized currents or voltages. The Primary voltage and the secondary voltage of an isolation transformer always remain the same. 3. ABB Instrument Transformers | Application Guide 3. Voltage transformers and potential transformers are also used to operate protective relays and devices, and in many other applications. Current and voltage transformers are available in voltage classes ranging from 5 kV to 34.5 kV. The main application of Transformer is to Step up ( Increase) or Step down (Decrease) the level of Voltage. Step up transformer is used in the grid to step up the voltage level before the distribution.