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1.Outline
FZ (R) N21-12 (D of of) the /T125-31.5 indoors a.c. high voltage vacuum load switch - fuse combination electric appliance (abbreviation "combines electric appliance") to be suitable to exchanges 50Hz, in the rated voltage 10kV electrical power system, the achievement opens breaks using of the load current, the excess current and the short-circuit current, specially is suitable to does not have the oiling, does not overhaul and the frequent operation and the ring net power supply unit and the terminal power supply transformer controls and protects the place. This product performance conforms to GB16926-97 "A.c. high voltage Load switch - Fuse Combination Electric appliance" and IEC420 "A.c. high voltage Load switch - Fuse Combination Electric appliance" request. This product has breaks the ability in a big way, safe reliable, the electricity life long, may frequently operate, is basic does not need to maintain and so on the merit. Simultaneously has obviously the obviously isolation fracture and related gathers the ability the earth knife, uses for parts the electrically operated spring to hold the drive mechanism, has far moves the remote control ability.
2． Use environmental condition
2.1 altitudes above sea level: Does not surpass 2000m;
2.2 ambient temperatures: -25 ℃ ~ +40 ℃ (permission in -30 ℃ time storage and transport)
2.3 relative humidity: The daily average value is not bigger than 95%; The monthly mean value is not bigger than 90%;
2.4 does not have the fire, the explosion hazard, the serious contamination, chemistry corrosion and the fierce place.
3. Technical parameter
3.1 technical parameters see Table 1
Table 1 combination electric appliance technology parameter
|
Serial number |
Name |
Unit |
Data |
|
1 |
Rated voltage |
kV |
12 |
|
2 |
Nominal frequency |
Hz |
50 |
|
3 |
Fuse biggest nominal current |
A |
125 |
|
4 |
Fixed shift electric current |
A |
3150 |
|
5 |
The rating short-circuits the drop-out current (the anticipated electric current Has Effect value) |
kA |
31.5 |
|
6 |
The rating short-circuits the pass to gather the electric current (anticipated electric current peak value) |
kA |
80 |
|
7 |
1min labor frequency voltage: The fracture, alternates with, relatively/the isolation fracture |
kV |
42/48 |
|
8 |
Lightning surge voltage: The fracture, alternates with, relatively/the isolation fracture |
kV |
75/85 |
|
9 |
Fuse ram output energy |
J |
2～5 |
3.2 combines in the electric appliance the vacuum load switch technical parameter to see Table 2
Table 2 vacuums load switch technology parameter
|
Serial number |
Name |
Unit |
Data |
|
1 |
Rated voltage |
kV |
12 |
|
2 |
Nominal frequency |
Hz |
50 |
|
3 |
Nominal current |
A |
630 |
|
4 |
The rating has the merit load drop-out current |
A |
630 |
|
5 |
Fixed closed loop drop-out current |
A |
630 |
|
6 |
5% fixed has the merit load drop-out current |
A |
31.5 |
|
7 |
Fixed electric cable charge drop-out current |
A |
10 |
|
8 |
Fixed idling transformer drop-out current |
A |
1250kVA Transformer idling electric current |
|
9 |
1min labor frequency voltage: Relatively, alternates with, the vacuum fracture |
A |
42 |
|
10 |
Lightning surge voltage: Relatively, alternates with, the vacuum fracture |
kV |
75 |
|
11 |
Fixed short-time electric current/time |
kA/s |
20/4 |
|
12 |
Fixed peak value electric current |
kA |
50 |
|
13 |
The rating short-circuits the pass to gather the electric current (peak value) |
kA |
50 |
|
14 |
Mechanical life |
次 |
10000 |
|
15 |
Contact permission attrition accumulation thickness |
mm |
2 |
|
16 |
Analysis and synthesis Floodgate operation moment of force (strength) |
N.m |
≤ 200 |
4.3 combines the electric appliance to match the fuse technology parameter to see Table 3
Table 3 fuse technologies parameter
|
Serial number |
Rated voltage
（ kV） |
Fuse nominal current
（ A） |
Fixed drop-out current (kA) |
Melt body nominal current (A) |
|
SDLAJ |
12 |
40 |
31.5 |
63、10、16、20、25、31.5、40 |
|
SFLAJ |
12 |
100 |
50、63、71、80、100 |
|
SKLAJ |
12 |
125 |
125 |
4． The contour and installs the size
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