Product Description

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)

Payment Terms︰ TT/LC/DP/DA

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