CKX6 type series air insulated busway
CKX6 type series air insulated busway

Product overview

Busway series products are suitable for three-phase three-wire, three-phase four-wire, three-phase five-wire transmission and distribution systems with rated working voltage of 400V, 690V, rated insulation voltage of 1000V, frequency of 50Hz~60Hz and rated working current of 1000-4000A,it is mainly used as new power distribution equipment in industrial and mining, enterprises and public institutions and high-rise buildings. It has been proved to be a very excellent power supply equipment chosen by countless users in its installation and using period. The product has the advantages of small volume, large conveying capacity, strong overload capacity, flexible line expansion, beautiful appearance, compact structure, convenient installation and maintenance, and effective fire prevention, with stable performance, safety and reliability and other outstanding characteristics. It is suitable for places where equipped with dense equipment and many branches, it has great flexibility and high efficiency of power distribution, it can completely replace the traditional cable transmission and distribution mode.
The shell adopts steel plate electrostatic spraying, aluminum plate surface conductive oxidation or stainless steel plate, excellent corrosion resistance, good insulation property, high dielectric strength, low impedance, less power loss, reliable continuity of the ground protection, excellent heat dissipation performance, high mechanical strength.

Product features

Normal ambient condition
Ambient temperature: maximum temperature +40℃,
And the average temperature within 24 hours shall not exceed +35℃,
Minimum temperature -5℃;
Relative humidity: no more than 50% at the highest temperature of +40℃,
No more than 95% at +20℃,
The daily average is no more than 95%,
The monthly average value is no more than 90% (25℃);
Saturated vapor pressure: the daily average value is no more than 2.5× 10-3mpa;

The monthly average value is no more than 2.0× 10-3mpa; Altitude: no more than 2000m;
Clean air, non-conductive dust and gas sufficient enough to corrode metal and destroy insulation;
Earthquake intensity is less than or equal to 8 degrees, that is, when F < 10Hz, 0.3mm amplitude vibration.
Pollution degree: 3
Installation category: Grade III
Other products entering the equipment site must be non - explosive, fire resistance products.
(Note: The user shall negotiate with the manufacturer, if the above conditions cannot be met.)

Main technical parameters

Rated operational voltage: 400VAC
Rated working frequency: 50Hz
Rated insulation voltage: 1000V
Rated operational current: 1000A、1250A、1600A、2000A、2500A、3150A、4000A
Insulation resistance: Insulation resistance in every busway unit≥100MΩ
Dielectric strength: Dense insulated busway withstands 3750V power frequency voltage test, air insulated busway 2500V power frequency voltage test, no breakdown and electrical discharge phenomena occurred during 1min.
Protection grade: IP41 and below (busway trunk line system)
Short-circuit strength: see table 2

Table 2 short-circuit strength

Rated current(A)Rated short-time withstand current(kA)Rated peak withstand current(kA)


Temperature rise: When long-time working period of the busway at rated current, the busbar conductor temperature rise of the dense insulated busway≤60K, the busbar conductor temperature rise of the air insulated busway≤80K, touchable shell surface temperature rise ≤30K.
Electrical performance: comply with GB/T7251.6
Enclosure connecting resistance: The ground resistance between the dots on the busway unit and shell grounding terminal less or equal than 0.1Ω, and reliable obvious enough capacity grounding terminals.
Plug box: Ensure that its joint performance is still good after more than 300 times plug.
The plug box has a mechanical interlocking device to prevent hot plugging.
Impedance and voltage drop: At rated load, the impedance of every meter busway is less or equal than 10-5 ω /m, average inter-line voltage drop ≤3 x 10-3V/m.