Embedded poles

Model：EEP-40.5/2500-31.5

Category：Embedded poles

Product details

HEP-40.52 500-31.5-1.jpg HEP-40.52 500-31.5-2.jpg

HEP-40.52 500-31.5-3.jpg

Specifications of Embedded Pole

Main Technical Specification	Unit	Specification
		2500	2000	1600	1250
Rated voltage	kV	40.5
Rated current	A	2500	2000	1600	1250
Rated frequency	HZ	50/60
Short time power frequency withstand voltage(1min)	kV	95
Lightning impulse withstand voltage	kV	185
Rated short circuit breaking current	kA	31.5
Rated peak withstand current	kA	80
Rated short circuit making current	kA	80
Rated short time withstand current	kA	31.5
Rated duration of short circuit	S	4
Rated breaking current of single capacitor bank	A	400
Rated breaking current of back to back capacitor bank	A	400
Rated operating sequence		O-0.3s-CO180s-CO
Breaking operations of rated short circuit breaking current	Times	20
Rated mechanical endurance	Times	10000
Closing force due to bellow and atmosphere	N	120±50
Force required to hold contacts open at full stroke	N	240±50
Circuit resistance at lower limit of rated contact force	mΩ	≤30
Contacts limit erosion	mm	3
Gas pressure inside vacuum interrupter	Pa	≤1x10⁻³
Localize discharge	Pc	≤5

Mechanical Data Required for the Matched Vacuum Switchgear

Main Technical Specification	Unit	Specification
		2500	2000	1600	1250
Clearance between open contacts	mm	18±1
Average opening speed	m/s	1.55±0.15
Average closing speed	m/s	0.7±0.2
Rated of contact force	N	3200±200
Contact bouncing duration at closing operation	ms	≤3
Out of simultaneity of contact closing and opening	ms	≤2
Maximum rebound during opening	mm	≤3

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