24kV‌ Embedded Pole is an independent component which is composed of a 24kV‌ vacuum arc extinguishing chamber and a conductive connection piece packaged with solid insulating materials. Its main advantages are simple structure, few detachable parts, high reliability, and extremely high insulation capacity. The Embedded pole is solidified and connected with epoxy resin by ‌APG process.

Product Specifications

Specification Sheet

No.

Name

Unit

Data

Voltage Parameters

1	Rated Frequency (fr)	Hz	50/60
2	Rated Voltage (Ur)	kV	24
3	Rated Short-Time(1 min) Power Frequency Withstand Voltage (Ud)	kV	65
4	Rated Lightning Impulse Withstand Voltage (Peak) (Up)	kV	125

Current Parameters

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

Mechanical Parameters

1	Mass of Moving Parts	kg	1.1~2.5
2	Self-Closing Force of Contact	N	100±40~230±100
3	Rated Contact Pressure	N	2500±200~4700±100

Requirements for Switch Mechanical Characteristics

1	Clearance between Moved and Fixed Contact	mm	13±1
2	Average Opening Speed (from 75% of the contact gap to contact closed position)	m/s	1.4±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

Modular design, simple structure, less detachable parts, high reliability;

①High Reliability

The increase of surface creepage distance can provide favorable technical support for 10kV high altitude (above 3000 meters);

②Enhanced Insulation Strength

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

③Environmental Protection

‌Product Applications

24kV‌ Embedded Pole is especially suitable for the frequency of 50Hz/60Hz, rated voltage 24kV electric power, machinery, chemical industry, metallurgy, mining and other departments of the full operating conditions.