ABILKEEN High Pressure LB Series 66kV Oil Immersed Current Transformers

This type of transformer is suitable for current and energy measurement and relay protection in 50Hz, 66kV power systems. This product is a fully sealed porcelain box type oil paper insulated chain structure with three or four secondary windings. The primary winding is made into two sections, and two current ratios can be obtained through different wiring methods of the output terminals on the oil storage tank.

Product Details

Product Overview

The LB5 - 66 mutual inductor features a unique construction. Its iron core and windings are ingeniously integrated through a sophisticated casting process, ensuring stable performance. This model is a single - phase mutual inductor, engineered for connection between phases, making it highly suitable for specific electrical setups.

It is equipped with dual secondary windings, each with a distinct function. One winding is dedicated to precise current measurement and power monitoring, providing accurate data for power consumption assessment and current stability tracking. The other winding is designed for reliable relay protection, ensuring the safety and stability of the electrical system by quickly responding to abnormal conditions.

The iron core of the LB5 - 66 is crafted from top - grade cold - rolled silicon steel sheets. This material choice guarantees outstanding magnetic properties, enabling efficient energy transfer and stable performance even under challenging electrical loads.

In terms of standards compliance, the LB5 - 66 strictly adheres to both international and national norms. It meets the requirements of IEC60044 - 1, an internationally recognized standard for mutual inductors, as well as relevant national standards in China such as GB1208 - 2006, ensuring its quality and reliability across a wide range of electrical applications.

This mutual inductor is highly resistant to dirt and moisture, making it suitable for use in various environments, including tropical areas. Maintenance is hassle - free, only requiring regular removal of surface dirt. Its fully enclosed and cast insulation design results in a compact size and light weight, allowing for installation in any position and direction. A terminal box is installed at the secondary outlet terminal, which has multiple outlet terminal holes. Secondary wires can be drawn from different directions, offering convenient, safe, and reliable wiring, and anti - theft measures can also be easily implemented.

Product Parameters

Rated Voltage (kV)	Rated Current Ratio (A)	Level Combination	Accuracy Class	Rated Output (VA)		Accuracy Limit Factor	Rated Short-time Thermal Current (kA)	Rated Dynamic Stable Current (kA)	Rated Insulation Level (kA)	Creepage Distance (mm)	Oil Weight (kg)	Total Weight (kg)
				Full turns	Tap 0.5 level
66	2x25 ~2x750/5	P/P/0.5P/P/0.2P/P/0.2SP/P/0.5/0.2S	5P、10P	50		15	2.7-50	6.8-125	72.5/140/325	1.8	100	400
			0.5	50	30
			0.2	50	30
			0.2S	40	30
	2x600/5 Measurement level tap 2x300/5	P/P/0.5P/P/0.2P/P10.2SP/P/0.5/0.2S	5P、10P	50		15	25-50	62-125
			0.5	50	30
			0.2	50	30
			0.2S	40	30
	2x750/5 Measurement level tap 2x400/5	P/P/0.5P/P/0.2P/P/0.2SP/P/0.5/0.2S	5P、10P	50		15	25-50	62-125		2.5
			0.5	50	30
			0.2	50	30
			0.2S	40	30
	2x1000/5 Measurement level tap 2x500/5	P/P/0.5P/P/0.2P/P/0.2SP/P/0.5/0.2S	5P、10P	50		15	25-50	62-125
			0.5	50	30
			0.2	50	30
			0.2S	40	30