1. Description
CKFL SF6gas-insulated switchgear is a completely sealed & insulated medium voltage ring main unit working in a voltage range maximum up to 24kV.
2. Technical Feature
---- Flexible expansion
---- Rustproof cabinet with high mechanical strength
---- Safe & reliable gas tank
---- Spring operating mechanism with anti-misoperation system
---- Fuse with sealed isolation
---- Simply and convenient connection
3. Working Condition
3.1 Altitude:≤1500m
3.2 Ambient air temperature: -35℃～+40℃
3.3 Max. average daily temperature: +40℃ Max. annual average temperature: +35℃
3.4 Wind speed: ≤34m/s
3.5 Relative air humidity: ≤90% ( +25℃)
3.6 Ground gradient: ≤5°
3.7 Earthquake intensity: ≤magnitude 8
3.8 Applicable in the places without fire, without explosion risk, without chemical corrosive and without violent vibration
(Exceeding above working condition is available as customized product)
4. Technical Data
| Technical Data |
Unit |
Module C |
Module F |
Module V |
| Load switch |
Switch-fuse combination |
Vacuum switch |
Disconnector/ earthing switch |
| Rated voltage |
kV |
12 |
24 |
12 |
24 |
12 |
24 |
12 |
24 |
| Rated frequency |
Hz |
50 |
50 |
50 |
50 |
| Rated current |
A |
630 |
125 |
630 |
630 |
| Rated breaking cable charging current |
A |
20 |
20 |
/ |
/ |
| Rated short-circuit making current(peak) |
kA |
50 |
Up to fuse |
50 |
40 |
50 |
40 |
| Rated short-circuit breaking current |
kA |
/ |
Up to fuse |
20 |
16 |
/ |
/ |
| Rated short-time withstand current |
kA |
20 |
/ |
20 |
16 |
20 |
16 |
| Rated short-time withstand current duration(main circuit) |
s |
4 |
/ |
4 |
4 |
4 |
4 |
| Rated short-time withstand current duration(ground loop) |
s |
2 |
/ |
/ |
/ |
| Rated breaking transfer current |
A |
/ |
1600 |
/ |
/ |
| Rated short-time power frequency withstand voltage |
phase-to-phase phase-to-earth |
kV/1 min |
42 |
50 |
42 |
50 |
42 |
50 |
42 |
50 |
| open contact |
kV/ 1 min |
48 |
65 |
48 |
65 |
48 |
65 |
48 |
65 |
| Rated lightning impulse withstand voltage |
phase-to-phase phase-to-earth |
kV |
75 |
95 |
75 |
95 |
75 |
95 |
75 |
95 |
| open contact |
kV |
85 |
110 |
85 |
110 |
85 |
110 |
85 |
110 |
| Mechanical life |
times |
5000 |
5000 |
5000 |
5000 |
| Mechanical life of earthing switch |
times |
≥2000 |
≥2000 |
≥2000 |
≥2000 |
| SF6 pressure in seal enclosure |
Mpa |
0.040-0.045 |
0.040-0.045 |
0.040-0.045 |
0.040-0.045 |
| SF6 annual leakage rate |
/ |
≤0.02% |
≤0.02% |
≤0.02% |
≤0.02% |
5. Available modules options
● CKFL- □ / C-----Load switch module
● CKFL- □ / F-----Switch-fuse combination module
● CKFL- □ / V-----Vacuum-circuit breaker module
● CKFL- □ / D-----Direct incoming/outgoing cable module
● CKFL- □ / CL-----Busbar sectionalizer module(load switch)
● CKFL- □ / CvKr-----Busbar sectionalizer module(vacuum switch)
● CKFL- □ / PT-----Potential transformer module
● CKFL- □ / M-----Metering module
6. Standard
----IEC62271-1
----IEC62271-100
----IEC62271-200
----IEC60265-1
----IEC62271-102
----GB/T11022
----GB/T3804
----GB/T1984, GB1985
Product Tags:
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Indoor Power Distribution Switchgear , Gas Insulated Switchgear Three Phase Images
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