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Outdoor Epoxy Resin Cast Potential Transformer

The outdoor epoxy resin cast potential transformer features a two-post structure and is manufactured using outdoor-grade epoxy resin vacuum casting technology. It offers strong weather resistance, moisture and dust protection, UV resistance, and maintenance-free operation. Suitable for 10kV-35kV outdoor distribution systems, it is a core equipment for voltage measurement, metering, and protection in outdoor substations and overhead lines.


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Technical Parameters

Parameter	Specification
Rated Voltage	10kV / 12kV / 24kV / 35kV
Rated Frequency	50Hz / 60Hz
Rated Primary Voltage	10kV-35kV / √3
Rated Secondary Voltage	100V / 100/√3 V
Residual Voltage Winding	100/3 V（Optional）
Accuracy Class	Metering: 0.2 / 0.5
	Measurement: 0.5 / 1.0
	Protection: 3P / 6P
Rated Output	20VA ~ 200VA
Limiting Output	300VA ~ 800VA
Insulation Medium	Outdoor Epoxy Resin Cast
Creepage Distance	Designed According to Pollution Class (II / III / IV)
Protection Class	IP54 / IP65
Structure Type	Two-Post Type
Installation Method	Post Type / Suspension Type

Outdoor Epoxy Resin Cast Potential Transformer Parameter Table

No.	Rated Voltage (kV)	Voltage Ratio (kV)	Accuracy Class Combination	Rated Output (VA)	Limiting Output (VA)
1	10	10/√3 / 0.1/√3	0.2	30	300
2	10	10/√3 / 0.1/√3	0.5	50	400
3	10	10/√3 / 0.1/√3 / 0.1/3	0.2/3P	30/50	400
4	10	10/√3 / 0.1/√3 / 0.1/3	0.5/6P	50/100	500
5	24	24/√3 / 0.1/√3	0.2	30	400
6	24	24/√3 / 0.1/√3	0.5	50	500
7	24	24/√3 / 0.1/√3 / 0.1/3	0.2/3P	50/100	500
8	35	35/√3 / 0.1/√3	0.2	50	500
9	35	35/√3 / 0.1/√3	0.5	80	600
10	35	35/√3 / 0.1/√3 / 0.1/3	0.2/3P	50/100	600
11	35	35/√3 / 0.1/√3 / 0.1/3	0.5/6P	80/150	800

Outline Dimension Reference Table

Rated Voltage (kV)	L / Length (mm)	W / Width (mm)	H / Height (mm)	Mounting Hole Distance (mm)	Weight (kg)
10	350	300	500	250×250	35
24	400	350	550	280×280	45
35	450	400	650	300×300	60

Accuracy Class & Application

Accuracy Class	Application	Permissible Error
0.2	Energy Metering	Low error, high accuracy
0.5	Measurement	Suitable for general measurement
1	Measurement	Suitable for indicating instruments
3P	Protection	Overvoltage protection
6P	Protection	General protection

Applications

Application	Recommended Voltage Level	Recommended Accuracy
Outdoor Substation	10kV-35kV	0.2 / 3P
Overhead Line	10kV-35kV	0.5 / 6P
Cable Distribution Box	10kV-24kV	0.5 / 6P
PV Power Plant	10kV-35kV	0.2 / 3P
Wind Farm	10kV-35kV	0.2 / 3P

Selection Guide

Voltage Level Selection

Rated Voltage	Applicable Scenario
10kV / 12kV	Urban Distribution Network, Industrial Distribution
24kV	Industrial Parks, New Energy Projects
35kV	Substations, Large Industrial Enterprises

Customization Services

Customization Option	Description
Voltage Level	10kV / 12kV / 24kV / 35kV / Optional
Accuracy Class Combination	0.2 / 0.5 / 1.0 / 3P / 6P / Various combinations
Residual Voltage Winding	Optional for ground protection

For detailed technical drawings or customized solutions, please contact the Sline technical team. We will provide one-on-one engineer-led service throughout the process.