The 12kV PT handcart (Potential Transformer trolley) is a withdrawable unit designed for indoor high-voltage switchgear. It is mainly used for voltage measurement, relay protection, and system monitoring.

This PT handcart is suitable for 12kV, 3-phase AC 50Hz power systems and is widely applied in metal-clad switchgear such as KYN28. It allows easy installation, testing, and replacement of potential transformers (PT), improving operational safety and maintenance efficiency.

Key Features

Designed for 12kV medium voltage switchgear systems

Withdrawable (handcart) type for easy operation

Suitable for PT installation, testing, and replacement

Visible isolation gap for enhanced safety

Mechanical and electrical interlocking system

Compact structure and flexible installation

Compatible with standard switchgear (KYN28, etc.)

Applications

The 12kV PT handcart is widely used in:

l Medium voltage switchgear systems (KYN28, etc.)

l Power substations

l Industrial power distribution systems

l Power plants and renewable energy projects

l Electrical measurement and protection systems

It plays an important role in voltage signal acquisition and protection circuits in power systems.

Structure

The PT handcart mainly consists of:

l Handcart chassis (movable mechanism)

l Insulation support structure

l Potential transformer (PT) mounting unit

l Primary contact system (tulip contacts)

l Enclosure and protection structure

l Fuse unit (optional)

The compact and integrated design ensures high mechanical strength and safe operation.

Advantages

l Improves efficiency of PT installation and maintenance

l Clear isolation position for higher safety

l Easy operation and reduced labor risk

l Customizable configurations available

l High compatibility with switchgear systems

Optional Configurations

l Potential transformer (PT)

l Fuse unit

l Surge arrester

l Harmonic suppression device

l Sensors and monitoring components