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Home » Product List » Isolation Switch » Load Break Switch Indoor/Lbs/12kv/630A/IEC62271

Load Break Switch Indoor/Lbs/12kv/630A/IEC62271

Min. order: 10 Pieces
Trade Terms: FOB, CFR, CIF
Payment Terms: L/C, T/T, Western Union, Paypal, Money Gram
Trademark: XIKAI

Product Detail

Basic Info
  • Model NO.: FKN12-12D
  • Type: High-voltage
  • Structure: Three-column Disconnector
  • Installation: Indoor High-voltage
  • Rated Voltage: 12kv
  • Rated Current: 630A
  • Rated Power Frequency: 50-60Hz
  • Export Markets: Global
Additional Info
  • Trademark: XIKAI
  • Packing: Export Wooden Cases
  • Standard: IEC62271-105, IEC62271-102
  • Origin: Wenzhou-Yueqing-
  • HS Code: 8535900090
  • Production Capacity: 500/Month
Product Description
FKN12-12D Series Indoor M.V. Load Break Switch
FKN12-12D Load Switch with Earth Switch
FKN12-12R ON Load switch
FKN12-12DR High Voltage Load Break Switch ( on load disconnector)

The voltage 12kV, 24kV and 35kV. Indoor use, on load break switch, load break switch and loadswitch.

This switch is the basic type.

FUNCTIONAL CHARACTERISTICS
The interruption is carried out in the load-break switch FKN12, by a blow which strikes, deionizes and extinguishes the arc in a
very short time. The compressed air required for extinction is produced, during opening operation by the motion of the
cylinder(1) which acts also as moving contact, with respect to piston(2) housed inside and secured to the base of fixed
cylinder(4).
Through the special shape of tuyere(3) currents of some hundreds of amperes are interrupted by a limited yet sufficient air
volume.
As pressure increased gradually, this facilitates the interruption of inductive currents without causing dangerous overvoltage
while a quick dialectical regeneration between contacts ensuing the blow and the high separation speed of moving contact,
makes easier also the interrupting of capacitive currents.
In comparison with gas self-generating apparatus they have also the advantage of not undergoing, perceptible alteration after
each interruption.


Opening stages sequence of a load-break switch pole FKN12
1) Moving contact cylinder
2) Piston
3) Tuyere
4) Fixed cylinder
Rated voltage  kV  12 24 35
Maximum service voltage  kV  15 25.8 40.5
Withstand voltage to earth and between poles  kV  42 50 70
Withstand voltage across the isolating distance  kV  48 60 80
Impulse withstand voltage to earth and between poles  kV  85 125 170
Impluse withstand voltage across the isolating distance  kV  95 145 195
Rated current  630 630 630
Breaking capacity for active circuits(cos0.7)  630 630 630
Breaking capacity for no-load transformers  16 16 16
Breaking capacity for no-load line and cables  25 25 16
Short-time current  kA 20 20 12.5
sec.  2s  1s  1s   
Making capacity  kA  50 40 25
Zhejiang Xikai Electric Co., Ltd.
Zhejiang, China
Local Time: 06:16 Wed Sep 2
Account Registered in: 2010
Business Type: Manufacturer

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