12kV embedded pole is an independent component where the 12kV vacuum interrupter and conductive connectors are encapsulated with solid insulation material. Its main advantages include a simple structure, few removable parts, high reliability, and excellent insulation capability. The embedded pole is formed by solidifying the vacuum interrupter and conductive terminals into one unit using the APG process and epoxy resin.

Product Specifications

Specification Sheet

No.

Name

Unit

Data

Voltage Parameters

1	Rated Frequency (fr)	Hz	50/60
2	Rated Voltage (Ur)	kV	12
3	Rated Short-Time(1 min) Power Frequency Withstand Voltage (Ud)	kV	48
4	Rated Lightning Impulse Withstand Voltage (Peak) (Up)	kV	75

Current Parameters

1	Rated Current (Ir)	A	630/1250/1600/2000/2500/3150/4000/5000
2	Rated Short-Circuit Breaking Current (Isc)	kA	25/31.5/40/50
3	Operating Cycles at Rated Short-Circuit Breaking Current	Cycles	30
4	Rated Short-Time Withstand Current (Ik)	kA	25/31.5/40/50
5	Rated Duration of Short-Circuit (tk)	s	4
6	Rated Withstand Current (Peak) (Ip)	kA	63/80/100/125
7	Rated Short-Circuit Making Current (IMC)	kA	63/80/100/125
8	Rated Short-Circuit Breaking Current DC Component	%	40
9	Standard Operating Sequence	mm	O-0.3s-CO-180s-CO O-180s-CO-180s-CO (≥40kA)

Mechanical Parameters

1	Mass of Moving Parts	kg	0.5~5
2	Self-Closing Force of Contact	N	70±25~240±80
3	Rated Contact Pressure	N	2000±200~6000±500

Requirements for Switch Mechanical Characteristics

1	Clearance between Moved and Fixed Contact	mm	9±1
2	Average Opening Speed (from 75% of the contact gap to contact closed position)	m/s	1.2±0.2
3	Average Closing Speed (from 30% of the contact gap to contact closed position)	m/s	0.7±0.2
4	Contact Closing Bounce Time	ms	≤2
5	Closing and Opening Non-Simultaneity of Contacts	ms	≤2
6	Contact Opening Rebound Amplitude	mm	≤2

Lifespan

1	Storage Period	Years	20
2	Mechanical Endurance	Times	10000
3	Allowable Wear Thickness of Contact	mm	3

Product Advantages

The modular design with fewer removable parts ensures a simple structure and reliable performance.

①High Reliability

Surface insulation is transformed into volume insulation, which reduces the effect of environmental factors compared to air insulation and greatly increases the insulation strength.

②Enhanced Insulation Strength

Strong resistance to environmental pollution, especially excellent in reducing the use of SF6 gas, contributing to the goal of zero greenhouse gas emissions.

③Environmental Protection

‌Product Applications

12kV embedded pole is particularly suitable for power, machinery, chemical, metallurgy, mining, and other sectors operating under all working conditions, with a rated voltage of 12kV and a frequency of 50Hz/60Hz.