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  • FZRN25-12D Indoor AC High Voltage Vacuum Load Break Switch
  • FZRN25-12D Indoor AC High Voltage Vacuum Load Break Switch

FZRN25-12D Indoor AC High Voltage Vacuum Load Break Switch

Description:

1. Altitude: ≤1000m;

2. Ambient temperature: -25℃~+40℃;

3. Relative humidity: daily average ≤95%, monthly average ≤90%;

4. Earthquake intensity: ≤8 degree;

5. Applicable occasions should free from inflammables, explosives,corrosives and severe vibration.

  • Product Description

FZN25-12D Indoor AC High Voltage Vacuum Load Break Switch

Summary
This product applies vacuum arc-extinguishing chamber. It features with reliable operation, long electric life and easy maintenance, breaking and making power
supply frequently. The operation mechanism is inside switchgear combining disconnector, load break switch and earthing switch into one. It has compactable dimension and small weight. The disconnect gap lies in a serial with the vacuum arc-extinguishing chamber. The large dynamic stable current and thermal stable current, the interlinked procedures assure the operation coherently. Busbar and load break switch are separated fully by taper fixed contact, insulating cover and valve .Vacuum circuit break switch, earthing switch, valve and cubicle door are interlocked according to “5 protections” to prevent from miss-operation. The spring storage operation mechanism can both operate by dependent manual and power to realize remote control. The CO operating power can be AC or DC source. Manual operation is generally on the right of switch, but can be changed to the left or obverse according to user’s requirement.

Ambient condition
1. Altitude: ≤1000m;
2. Ambient temperature: -25℃~+40℃;
3. Relative humidity: daily average ≤95%, monthly average ≤90%;
4. Earthquake intensity: ≤8 degree;
5. Applicable occasions should free from inflammables, explosives,corrosives and severe vibration.

Technical specification

FZN25-12D Vacuum load break switch and FZRN-12D Combination

No. Item Unit FZN25-12D/T630-20 FZRN25-12D/T200-31.5
1 Rated voltage kV 12
2 Rated current A 630 200
3 Rated frequency Hz 50/60
4 Rated
insulating
level
1min. PF withstand voltage kV arcing chamber gaps:30, phase to earth, phase to phase:42, across open contacts:48
5 lightning impulse withstand voltage(peak) phase to phase:75, across open contacts:85
6 Rated short-time withstand current(thermal stable current) kA 20
7 Rated short-circuit duration s 4
8 Rated peak withstand current(dynamic stable current ) kA 50
9 Rated active load breaking current A 630
10 Rated breaking current of closed-loop A 630
11 Rated breaking current of charging cable A 10
12 Rated breaking no-load transformer capacity kVA 1600
13 Rated short-circuit breaking current kA 31.5
14 Rated transfer current A 2000
15 Fuse model SDLAJ-12 SFLAJ-12
16 Output power of impinger J 2-5
17 Rated short-circuit making current kA 50
18 Rated short-time withstand current of earthing switch(thermal stable current) kA 20
19 Rated short-circuit duration of earthing switch s 2
20 Rated voltage of auxiliary loop V ∽ 220, 110
21 Mechanical life Times 10000
No. Item Unit  FZN25-12D/T630-20  FZRN25-12D/T200-31.5
1  Clearance between electrified parts/ to earth  mm  ≥125
2  The thickness of conducting tube inject into fixed contacting base  mm  ≮18
3  Clearance between fixed and moving contact  mm 6+1
0
4  Spring decrement under contact pressure  mm 2+1
0
5  Average closing speed of arc-extinguishing chamber  m/s  0.9±0.2
6 Average opening speed of arc-extinguishing chamber  m/s  0.6±0.2
7  Opening sping time  ms  ≤2
8  Three poles C/O asynchronous  ms  ≤3
9  Main circuit resistance  μΩ  ≤150  ≤300
10  Maximum moment of manual operation  N.m  ≤160
11  Opening time actuated by fuse  ms  –  30-40
12  Opening time actuated by release  ms  40-45

 

FZN25-12D Indoor AC High Voltage Vacuum Load Break Switch

 

1.Fixed contact
2.Insulating cover
3.Conducting tube
4.Fuse
5.Plate
6.Vacuum arc-extinguishing chamber
7.Valve the normal length of left handle and right handle are 167, optional cubicle depth 900,width 650, height 2000( optional selection L=192, 207, 217)

FZN25-12D Indoor AC High Voltage Vacuum Load Break Switch

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