KNW1
SERIES INTELLIGENT UNIVERSAL CIRCUIT BREAKER
1. Model and meaning
2. Sphere of application
The KNW1 Series Intelligent Universal Circuit Breaker (hereinafter referred to as "the circuit breaker") is suitable for distribution
networks with AC 50 Hz, rated voltage of 400 V and 690 V and rated current of 630 A to 6,300 A, and is used for power distribution, so as to protect circuits and power equipment from faults such as overload, undervoltage, short circuit, and single-phase grounding. The circuit breaker has the functions of intelligent protection and isolation. It has accurate selective protection, which can improve the reliability of power supply and avoid unnecessary blackout. The circuit breaker is equipped with an open communication interface to realize telemetering, telesignaling, teleco ntrol and teleregulation, thus meeting the requirements of the centralized control of the automation system.
The circuit breaker complies with GB 14048.2 Low-voltage Switchgear and Controlgear -Low-voltage Circuit Breakers and IEC 60947 -2 Low-voltage Switchgear and Controlgear -Part 2: Low-voltage Circuit Breakers
3. Normal Operating and Installation Conditions
1. Ambient air temperature: The upper limit of ambient air temperature shall not exceed +40°C, the
lower limit shall not be lower than -5°C, and the average value within 24 hours shall not exceed +35°C.
Note:
(1) The operating conditions with the lower limit of -10°C or -25°C shall be declared to the manufacturer by the user when ordering.
(2) If the upper limit exceeds +40°C or the lower limit is lower than -25°C, the user shall consult with the manufacturer.
2. Altitude: The altitude of the installation location shall not exceed 2,000 meters.
3. Atmospheric conditions: The relative atmospheric humidity does not exceed 50% when the maximum temperature is +40°C, and a higher relative humidity is allowed at a lower temperature. For example, the humidity is 90% at 20°C, and special measures shall be taken for occasional condensation due to the temperature change.
4. Contamination grade: Grade 3.
5. Installation category: The installation category of the breaker's main circuit, undervoltage release's coil and primary coil of the power transformer is IV, and that of other auxiliary circuits and control circuits is III.
6. Use category: Class B.
7. Installation conditions: The circuit breaker shall be installed according to the installation requirements of this instruction. The circuit breaker shall be installed smoothly without additional mechanical stress, so as to avoid damage to the circuit breaker or poor contact of the main busbar.
4. Structure Overview
The circuit breaker is compact in structure and has the characteristics of three-dimensional partition. The contact system is enclosed between two insulation baseboards with partition structure, and the contacts of each phase are partitioned to form independent chambers. The controller, operating mechanism, manual and electric operating mechanisms are arranged in front of each other in turn to form their own independent units. If one of the units fails, the unit can be completely removed for the replacement (see Figure 6 and Figure 7).
Figure 5. Operation indicator diagram of the KNW1 Series Universal Circuit Breake
Company Introduction
Wenzhou Korlen Electric Appliances Co., Ltd, It is a joint venture. My company is a manufacturer including design, development, produce and sale, professional producing MCB, MCCB, RCCB and AC contactor etc. Product enterprises. The company owns import and export power of self-run, expanding Europe and America, Middle East, Southeast Asia etc. Market, set a good Public praise.
The company have more than 1500 workers, including senior engineer among them, engineer at inside of more than 100 technician. And then set up to cover area more than 50 acres, construct area is more than 38000 square meters of the modern industrial zone, providing with the forerunner's standard laboratory and various examination equipments.
Under Korlen people to make great effort unremittingly, designed and developed by oneself, develop and produce the series of MCB, RCCB filled up local blank, attain inter-national advanced level, and acquire more than 20 national patents. The company acquires "30 strong eminent enterprises, top ten of export income, yueqing star class enterprise, attach importance to contract and keeps promise" title of honor for many times past years. Company still the initiative pass ISO 9001 management system verification and 14001 environments management system verification. Our product passed quality verification of domestic and international authority organization like the CB\ SEMKO\ NF\ SIRIM\ SNI\ CE \PCT\ TSE, In the meantime high breaking capacity breaker of our company in this city is the unique product which got " Yueqing famous brand product" by Yueqing people government.
Korlen Electric Appliances is willing to make friends with social public, the world outside businessman join hands together for prosperous society and development to build a brighter future.
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