Indoor Instrument transformers such as current and voltage transformers are commonly used in electrical power systems to measure and transform electrical quantities such as current, voltage, and power. They are typically used in indoor electrical distribution systems, such as those found in commercial buildings, industrial plants, and other low voltage applications.

These transformers are designed to operate at low voltage levels and are used in conjunction with measuring instruments, protection relays, and other electrical equipment to ensure accurate and safe operation of the electrical power system. Indoor current transformers (CTs) are used to measure electrical current, while voltage transformers (VTs) are used to measure electrical voltage. Combined CTs and VTs are also available, which provide both current and voltage measurement in one device. The use of indoor current and voltage transformers enables accurate measurement and control of electrical power systems, ensuring the safety and reliability of these systems.

In general, Instrument Transformers play a critical role in ensuring the accurate and safe operation of electrical power systems by providing reliable and accurate measurements of electrical quantities.

Below are two common application examples of Indoor Current & Voltage transformers:

Power Quality Monitoring: Indoor current and voltage transformers are commonly used in power quality monitoring systems to measure and record the electrical quantities in a power system. This information is used to identify and analyze power quality issues, such as voltage sags, surges, and harmonics, in order to improve the reliability and efficiency of the electrical power system.
Substation Monitoring: Indoor current and voltage transformers are used in electrical substations to monitor and control the electrical power system. They are used to measure the electrical quantities in the substation and provide this information to protection relays, which are used to detect and isolate faults in the power system. The use of indoor current and voltage transformers in substations helps to ensure the safe and reliable operation of the electrical power system.

Indoor Low voltage CT

Low voltage current transformers are designed to provide measurement instruments and protection circuits in electrical power devices with a maximum operating voltage of 1.2 kV and a frequency of 50 Hz or 60 Hz. These transformers are produced for secondary currents of 1A and 5A. The primary current range varies depending on the transformer and can extend from 1A to 6,000A. These transformers are either cast in epoxy resin or tape-wound, single-phase and low power, specifically engineered for indoor equipment usage. Transformers are designed in compliance with IEC-61869-1&2.

SRT13580S

up to 1.2kV

SRT13540S

up to 1.2kV

SRT135100S

up to 1.2kV

SRT11040S

up to 1.2kV

Indoor Low voltage PT/VT

Low voltage Indoor Voltage transformers are single-phase or Three-phase transformers designed for the use in low voltage systems of up to 1.2kV. They are designed for measuring and protection of low voltage equipment for indoor design. Transformers are designed in compliance with IEC-61869-1&3.

LVVT-3P

up to 1.2kV

LVVT-1P

up to 1.2kV

Indoor Medium Voltage CT

Medium Voltage current transformers de-signed for the use in medium voltage systems from 1.2 kV to 36 kV. These transformers are produced for secondary currents of 1A and 5A. The primary current range varies depending on the transformer and can extend from 5A to 10,000A. These transformers are single-phase or Three-phase, maintenance free and specifically engineered for indoor equipment usage. Transformers are designed in compliance with IEC-61869-1&2.

33RC07

1.2kV to 36kV

11RC09

1.2kV to 36kV

11RC07

1.2kV to 36kV

11RC03

1.2kV to 36kV

Indoor Medium Voltage PT/VT

Medium voltage Indoor voltage transformer are cast in epoxy resin and designed for high accuracy medium voltage measurements of up to 36 kV. These transformers are single-phase or Three-phase and designed for measuring and protection of medium voltage equipment for indoor design. Transformers are designed in compliance with IEC-61869-1&3.