33kv Combined Drop-out Surge Arrester/Fuse

• Function: Circuit Protection
• Usage: Disconnector, Control Switch
• Contact Type: Connecting The Wires
• Detection Method: Open and Close The Switch
• Rated Continuous Current: 100A
• Certification: ISO9001
• System Voltage: 36kv
• Rated Frequency: 50Hz
• Creepage Distance: 31mm/Kv
• Transport Package: Standard Export Package
• Specification: 1095*550
• Trademark: DKLINE or according to customers requirements
• Origin: Wenzhou, Zhejiang, China
• Production Capacity: 5000 Pieces/Month

Product Description

Specification

The combined unit is a device that has the functionality of a standard cut-out fuse and a distribution class drop-out surge arrester built into a single device. In the event of a surge diverter failure the ground lead disconnector (GLD) of the surge diverter shall operate and the failed arrester shall drop out, disconnecting it automatically from the network. At the same time, this causes the fuse carrier to drop out automatically and thereby isolating the affected phase from the network. An interlocking mechanism ensures that it is not be possible to close the fuse carrier, unless the drop-out surge arrester is in the closed position.

System characteristics

Particulars		Requirements
System highest voltage and frequency		12kV,50Hz	36kV,50Hz
Maximum duration of earth fault		≤3 seconds
Earth fault factor as per IEC 60099-4		1.4
Maximum short circuit current,kA,3s		31.5
Discharge class as per IEC 6099-4		Class 2
Power frequency withstand voltage,wet,kV rms		38	95
Lightning impulse withstand voltage.kV pk		95	200
Creep age distance as per IEC/TS 60815:2008	Very heavy	31mm/kV

Guaranteed Technical Protective Data for Surge Arrester

Description		Unit	Requirement
Maximum system voltage, Um		kV	12	36
Rated voltage, Ur		kV	11	33
Maximum continuous operating voltage	As per IEC 60099-4, Uc	kV rms	9.6	28.8
Temporary overvoltagecapability (TOV, kV rms	1s	kV rms	13.8	41.4
	10s		13.1	39.2
Maximum residual voltage at steep, lightning and switching impulse current with current wave	10kA(8/20μs)	kV	31.9	95.8
Partial discharge performance, pC as per IEC 60270.			Less than 10

Withstand capabilities of surge arrester housing

Description	Units	Requirement
Rated Voltage	kV	11	33
Lightning impulse withstand voltage	kVpk	95	200
Power frequency withstand voltage for 1 min, wet	kV	46	116
Creepage distance, 31mm/kV	mm	372	1116
Short circuit withstand capability (rated short circuit (withstand) current Is)	kA	20

Withstand Capabilities of Expulsion Fuses Assembly

Description		Units	Requirement
Rated voltage		kV	12	36
Ratedfrequency		Hz	50	50
Rated lightning impulse withstand voltage (dry)	Across isolating distance	kV	95	200
	To earth & between poles	kV	85	170
Rated Imin. power frequency withstand voltage (wet)	Across isolating distance	kV	38	95
	To earth & between poles	kV	32	85
Rated short time withstand current of fuse base & carrier		kA,3s	31.5	25
Rated current of fuse carrier		A	100	100
Minimum creepage distance		mm	372	1116

Withstand capabilities of insulators

Characteristics	Unit	11kV Insulator	33kV Insulator
Minimum Creepage Distance	mm	372	1116
Minimum Power Frequency Withstand Voltage (Wet)	kV rms	38	95
Minimum Lighting ImpulseWithstand Voltage (Dry)	kV pk	95	200
Minimum Failing Load	kN	10	10

FAQ

1.Samples providing?
  We are providing the samples for free, but need pay for the freight charge. 
 
2.EPC material design and provide in lot?
  Yes, we are supplying for LV and MV EPC material in lot many years,and have strong design team.
 
3.OEM available?
  Yes, we are providing the anchor clamp as custom requirement.
 
4.Complete documents for tender?
  Yes, whole set documents ready for submit.