ABB Instrument Transformer

Advance Information*

1. Introduction

ABB Instrument Transformers stand as the epitome of precision, quality, and reliability in the field of power measurement and monitoring. Instrument transformers are crucial in measuring electrical parameters like current, voltage, and power, especially in high-voltage systems. ABB, a globally recognized leader in power and automation technologies, offers a broad selection of instrument transformers ranging from 600 V to 34.5 kV.

ABB Instrument Transformers are known for their innovative technology and cost savings, alongside a strong commitment to product quality and customer satisfaction. With rigorous testing and adherence to international standards, these transformers ensure accurate measurement and reliable performance in various applications.

2. Product Overview

2.1. Voltage Range

ABB Instrument Transformers cover a comprehensive voltage range from 600 V to 34.5 kV. This broad spectrum allows them to cater to varied applications across different industries, ensuring precise measurement and protection for electrical systems of all sizes.

2.2. Innovation and Cost Savings

One of the distinguishing features of ABB Instrument Transformers is the incorporation of cutting-edge technology. With advanced manufacturing techniques and innovative design, these transformers not only provide exceptional performance but also offer substantial cost savings. This innovation extends to materials used, resulting in transformers that are more efficient, durable, and environmentally friendly.

3. Product Quality and Customer Satisfaction

ABB's commitment to product quality is unmatched. Each instrument transformer is subjected to stringent testing and quality control processes to ensure it meets the highest standards. This dedication to quality translates to increased reliability, longevity, and safety for end-users. Additionally, ABB's focus on customer satisfaction ensures that every product is backed by exceptional service and support.

4. Features and Benefits

4.1. High Accuracy and Precision

Accuracy is paramount when it comes to instrument transformers, and ABB excels in this regard. These transformers provide high accuracy in voltage and current measurement, which is essential for the reliable operation of protective relays, meters, and other measurement devices.

4.2. Durability and Longevity

ABB Instrument Transformers are designed to withstand harsh environmental conditions. Robust construction and the use of high-quality materials ensure that these transformers have a long service life, even in the most demanding environments.

4.3. Easy Installation and Maintenance

Designed with user convenience in mind, ABB Instrument Transformers offer ease of installation and maintenance. Clear instructions, along with ABB's technical support, make setup straightforward. Furthermore, the maintenance requirements are minimal, contributing to lower operational costs over time.

4.4. Safety and Compliance

Compliance with international standards is a hallmark of ABB Instrument Transformers. These products adhere to industry-standard safety guidelines, ensuring they are safe to use in various applications. The transformers are tested for their insulation properties, withstand voltage ratings, and performance under fault conditions to ensure maximum safety.

5. Range of Products

ABB offers a diverse range of instrument transformers to meet different application needs. Below is a comprehensive overview of some of the primary types of instrument transformers available:

5.1. Current Transformers (CTs)

Current transformers are essential for measuring current in high-voltage circuits. ABB's CTs are known for their accuracy and reliability, providing essential data for power monitoring and protection systems.

5.1.1. Types of Current Transformers

• Indoor Current Transformers: Suitable for indoor applications, these transformers provide precise current measurements within switchgear and other indoor setups.
• Outdoor Current Transformers: Designed to resist outdoor conditions, these transformers are robust and suitable for use in substations and other outdoor installations.

5.2. Voltage Transformers (VTs)

Voltage transformers, also known as potential transformers, reduce high voltages to lower, standardized levels suitable for measurement and protection devices. ABB's VTs ensure accurate voltage measurement across a wide range of applications.

5.2.1. Types of Voltage Transformers

• Inductive Voltage Transformers: These use electromagnetic induction to step down voltages, providing reliable and accurate measurements.
• Capacitive Voltage Transformers: Often used in high-voltage applications, these transformers utilize capacitance to reduce voltage levels.

5.3. Combined Transformers

For applications requiring both current and voltage measurements, ABB offers combined transformers that integrate CT and VT functionalities into a single unit. This integration reduces space and installation costs while providing the same high level of accuracy and reliability.

6. Detailed Specifications

To aid in the selection process, below are detailed specifications for a selection of ABB Instrument Transformers:

6.1. Secondary Voltage Ratings

• Secondary Voltages: 110 V, 115 V, 120 V (for voltage transformers)
• Current Ratios: Various ratios available to suit different primary current requirements (for current transformers)

6.2 Insulation Class and Ratings

• Insulation Class: Up to 34.5 kV
• Power Frequency Withstand Voltage