Original
By certification 
Box-Type Fixed Metal Enclosed Switchgear
Box-Type Fixed Metal Enclosed Switchgear adopt SF6 switch as a main switch, be new unitization ,modularization SF6 air-insulated ring net cabinet. It’s suitable for distribution automation , compact and extensible metal-enclosed switchgear.
The switchgear has advantages including a simple structure, flexible operation, easy installation and reliable interlock ,etc. Also provides satisfactory technical solutions to meet different requirements.
HXGN-12 AC metal-enclosed ring main unit is suitable for ring network or terminal power supply systems with power levels of 12kV 3-phase AC 50Hz and used for power acceptance, distribution, overload and short-circuit protection, especially applicable for oil-free and maintenance-free places with frequent operation.
Technical parameters
Electrical Characteristics
| |||||||
Rated votlage |
Ur |
KV |
7.2 |
12 |
17.5 |
24 |
36 |
Insulation level | |||||||
Insulation |
Ud |
50/60 Hz, 1 min (kV r ms) |
20 |
28 |
38 |
50 |
70 |
Isolation |
Ud |
50/60 Hz, 1 min (kV r ms) |
23 |
32 |
45 |
60 |
80 |
Insulation |
Up |
1.2/50 μs (kV peak) |
60 |
75 |
95 |
125 |
170 |
Isolation |
Up |
1.2/50 μs (kV peak) |
70 |
85 |
110 |
145 |
195 |
Breaking capacity | |||||||
Transformer off load |
A |
16 |
|||||
Cables off load |
A |
31.5 |
50 |
||||
Rated current |
A |
400-630-1250 |
630-1250 |
||||
short-time withstand current |
Ik/tk |
kA/1s 25 |
630-1250 |
1250 |
|||
20 |
630-1250 |
||||||
16 |
630-1250 |
||||||
12.5 |
400-630-1250 |
630-1250 |
|||||
Making capacity (50Hz) |
Ima |
kA 62.5 |
630 |
NA |
|||
50 |
630 |
||||||
40 |
630 |
||||||
31.25 |
400-630 |
||||||
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