Solid Insulated Metal-Enclosed Sf6 Electrical Switchgear (SRM16-12)
Ⅰ.Overview
By the perfect integration of stationary type and flexible expansion, SRM16-12 type SF6 gas-insulating compact close metal switchgear with the adoption of the modular design,can be fixed of extended,it is suitable for end-user or network node, meanwhile meets the requirement of all kinds of switching substations cabinet-type transformer substations and cable
Branch cabinets. It characters on its compact structure, safety and reliability, longevity and maintenance free.
Ⅱ.Environmental conditions
1.Elevtitude of ≤ 3000 m
2.High ambient temperature + 55℃, lower temperature-45℃
3.High humidity and high average relative humidity
4.Measure 95% of ≤ for 24 hours, and 90% for 1 month
5.Seismic seismic intensity shall not exceed 8 degrees
6. No fire, explosion hazard, serious filthy, chemical corrosion, as well as places of intense vibration
Ⅲ.Specification
|
Item
|
Unit
|
C module
|
F module
|
V module
|
CB module
|
|
load break switch
|
switch fuse
|
vacuum switch
|
isolate/earhing switch
|
vacuum circuit breader
|
isolate/earhing switch
|
|
rated voltage
|
kV
|
12/24
|
12/24
|
12/24
|
12/24
|
12/24
|
12/24
|
|
power frequency withstand voltage
|
kV
|
42/50
|
42/50
|
42/50
|
42/50
|
42/50
|
42/50
|
|
impulse withstand voltage
|
kV
|
95/125
|
95/125
|
95/125
|
95/125
|
95/125
|
95/125
|
|
rated current
|
A
|
630/630
|
note 1
|
630/630
|
|
1250/630
|
|
|
rated transfer current
|
A
|
|
1750
|
|
|
closed loop
|
A
|
630
|
|
|
off load cable charging
|
A
|
630
|
|
|
5% rated active load drop-out current
|
A
|
135/135
|
|
|
earth fault breaking current
|
A
|
31.5/-
|
|
|
when earth fault, drop-out current of cable charging
|
A
|
200/150 115/87
|
|
|
short circuit drop-out current
|
kA
|
note 2
|
20/16
|
|
25/20
|
|
|
making capacity
|
kA
|
63/50
|
note 2
|
50/40
|
50/40
|
63/50
|
63/50
|
|
short time current 2s
|
kA
|
25/-
|
|
|
short time current 3s
|
kA
|
-/20
|
|
20/16
|
20/16
|
31.5/25
|
31.5/25
|
|
mechanical life
|
times
|
5000
|
3000
|
5000
|
2000
|
10000
|
5000
|
|
Note:1.varies with rated current value of fuse . 2.limited by high voltage fuse
|
Ⅳ.Features
1.SF6 gas performance indicators:absolute pressure at 20ºC is 1.4 PAR.
2.Annual gas leakage rate is 2‰.
3.chamber stainless steel thickness 3.0mm
4. Cabinet material: aluminum-zinc-plate 2mm
5. Including side expansion and top expansion
6. 630A/20kV specification internal arcing duration 1S
7. Shell protection grade: Shell IP41, IK07, air box shell (304/3mm stainless steel) protection grade IP67
8. At the rated voltage Ur, the X-ray emission level at 1m away from the vacuum interrupter does not exceed 5μSv/h; at the power frequency withstand voltage Ud, the X-ray emission level at 1m away from the vacuum interrupter does not exceed 150μSv/h
9. The solubility of the salt solution is (5±1)% (mass ratio), the PH value is 6.5-7.2 at (35±2)ºC, and the spray duration is 168h
Mechanical life test: circuit breaker 10000 times (M2 level), three-station isolation/earth switch 3000 times (M1 level)
Available modules:
C Load break switch module ( Width = 325mm )
De Cable connection module with earthing switch ( Width = 325mm )
D Cable connect module without earthing switch ( Width = 325mm )
F Load break switch and fuse combination module ( Width = 325mm )
V Vacuum switch module ( Width = 325mm )
SL Bus bar section module ( load break switch) (Width = 325mm )
Sv Bus bar section breaker module (vacuum switch) (Width = 650mm )
Be Bus bar earth module (Width = 325mm )
M Metering module (Width =750\1000mm )CB Vacuum circuit breaker module (Width = 500mm )
PT power module (Width = 400mm)
