1. Description
CKSS is a new generation of intelligent & environmental-friendly type medium voltage switchgear working in the voltage range maximum up to 24kV.
2. Technical Feature
----Without SF6 gas,green & environment friendly
----Small size & flexible expansion
----Safe & reliable
----Spring operating mechanism with dual anti-misoperation system
----Fuse with sealed isolation
3. Working Condition
3.1 Altitude: ≤4000m
3.2 Ambient air temperature: -40℃~+45℃
3.3 Max. average daily temperature: +40℃ Max. annual average temperature: +35℃
3.4 Wind speed: ≤34m/s
3.5 Relative air humidity: ≤95% ( +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. Standard
---- GB/T11022-1999
---- GB1984-2003
---- GB3804-2004
---- GB16926-2009
---- GB1985-2004
---- IEC60265-1-1998