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220kV High Voltage Current Transformer - Reliable China Suppliers & Factory for Advanced Measurement Solutions
Current Transformer (CT)
Current transformer (CT for short) is the device which could transfer and measuring the current according to the principle of electromagnetic induction.
Product Composition
This dry-type CT manufactured is composed of several high-precision components:
- ✔ Primary winding
- ✔ Outer sheath
- ✔ Capacitive main insulation structure
- ✔ Silicone rubber umbrella skirt
- ✔ Pressure balancing cover at both ends
- ✔ Shell and secondary winding
- ✔ Conductive wire clip
Key Advantages
The dry-type CT is popularized rapidly and widely in CHINA due to its exceptional performance:
- ⭐ No oil-filling & No gas-filling
- ⭐ No porcelain (Safety-focused)
- ⭐ Small volume & Light weight
- ⭐ Small maintenance workload
- ⭐ Fire and explosion protection
- ⭐ Improved pollution flashover voltage
Technical Classification: LGB Series
Type Significance:
LGB: Dry type current transformer with protection coil.
Rated Voltage: Unit in kV.
Examples:
🔹 LGB - 110: Rated voltage 110 kV, dry type current transformer with protection coil.
🔹 LGB - 220: Rated voltage 220 kV, dry type current transformer with protection coil.
Frequently Asked Questions
Q1: What is the primary function of a Current Transformer (CT)?
A CT is a device designed to transfer and measure electrical current based on the principle of electromagnetic induction, converting high currents into measurable values.
Q2: What makes the dry-type CT safer than traditional models?
It features fire and explosion protection because it requires no oil or gas filling, and eliminates the use of fragile porcelain.
Q3: What are the main components of an LGB series CT?
It consists of a primary winding, outer sheath, capacitive main insulation, silicone rubber umbrella skirt, pressure balancing covers, shell, secondary winding, and conductive wire clips.
Q4: How does silicone rubber improve the performance of the CT?
Using silicone rubber as outer insulation ensures surface voltage distribution equality and significantly improves the pollution flashover voltage resistance.
Q5: What does the "110" in LGB-110 represent?
The number "110" represents the rated voltage of the unit, which is 110 kV.
Q6: Why is the LGB series popular for industrial maintenance?
Its light weight, small volume, and dry-type construction result in a significantly smaller maintenance workload compared to oil-immersed alternatives.
HEADING-TYPE-1
High voltage parallel capacitors are suitable for parallel connection in AC power systems with power frequency (50Hz or 60Hz) of 1kV and above. They are used to compensate for inductive reactive power, improve power factor, improve voltage quality, reduce line losses, and fully utilize the efficiency of power generation and supply equipment.
description2
HEADING-TYPE-1
High voltage parallel capacitors are suitable for parallel connection in AC power systems with power frequency (50Hz or 60Hz) of 1kV and above. They are used to compensate for inductive reactive power, improve power factor, improve voltage quality, reduce line losses, and fully utilize the efficiency of power generation and supply equipment.
description2