KYN28-12/24 Shield Movable Metal-Clad Switchgear

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KYN28-12/24 Shield Movable Metal-Clad Switchgear
Posting date : Oct 31, 2011
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85-
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KYN28-12/24 Shield Movable Metal-Clad Switchgear KYN28 Shield movable metal-clad switchgear equipment (hereafter referred to as switchgear equipment), manufactured by Jiangsu SIVACON Electrical Co., Ltd(Huapeng Group’s subsidiary), is the complete distribution device for 6-12 KV three phases AC 50Hz single bus subsection system. This product is used for the own operation and its transmission of power plant, petrochemical industry, industry and mining project’s distribution and electricity system’s secondary substation, and also the lifting of large high voltage generator. It has the interlocking function of preventing pushing and pulling the truck on load, breaking and connecting the VCB by mistake, connecting the VCB when earthing switch is closed, entering the operating separated compartment, closing the earthing switch when it is operating. This kind of product can be equipped with homemade VS1 middle-positioned vacuum circuit breaker, VD4 made by ABB, 3AE made by Siemens and EV12 middle-positioned vacuum circuit breaker made by Schneider, and it is a distribution equipment with ascendant performance. 1.2 Operating Condition 1.2.1 Normal operating condition a. Ambient temperature: Max. +40℃; Min. -10℃ b. Altitude: 1000m (max) c. Relative humidity: daily average less than 95%, monthly less than 90% d. Shock of earthquake: less than 8 magnitude e. The ambient air should not be heavily polluted by corrosion or easy burning gas, vapour. f. No heavy dirtiness and vibration, Special design should be used under atrocious condition according to the requirement of category 1. 1.2.2 Special Operating Condition Note: When the switchgear equipment operates in low temperature and (or) in weather condition with large variation, air condensation can be appeared. Therefore, heater should be installed in the cubicle to prevent it from insulation accident and metal corrosion. Outline dimension and weight Height C (mm) 2200 Width A (mm) Rated current of tap-off bus to 1250A Rated short circuit thermal withstand current 40KA 800 Rated current of tap-off bus 1600A and above 1000 Depth B (mm) Rated current of cable in and out 1600A and below 1500 Rated current (aerial) in and out 2500A and above 1650(400 back) Weight (KG) 700-1200 Technical parameter for switchgear equipment Item Unit Data Rated voltage kV 6, 10 Highest operating voltage kV 7.2, 12,24 Rated insulation level 1 min power frequency withstand voltage kV 42,65 Lightning impulse withstand voltage kV 75,125 Rated frequency Hz 50 Rated current of main bus A 630, 1250, 1600, 2000, 2500, 3150 Rated current of tap-off bus A 630, 1250, 1600, 2000, 2500, 3150 Rated short time withstand current (4s) kA 16, 20, 25, 31.5, 40, 50 Rated peak withstand current kA 40, 50, 63, 80, 100, 125 Protection degree Enclosure is IP4X; Isolated compartment, truck compartment is IP2X when it opens. Note: The short circuit capacity of current transformer should be considered separately. Technical parameter of VS1, VD4 Vacuum circuit breaker Item Unit Data Rated voltage kV 6, 10 Highest operating voltage kV 7.2, 12 Rated insulation level 1 min power frequency withstand voltage kV 42 Lightning impulse withstand voltage kV 75 Rated frequency Hz 50 Rated current of main bus A 630, 1250, 1600, 2000, 2500, 3150 Rated symmetric short circuit breaking current (effective) A 16, 20, 25, 31.5, 40, 50 Rated short time withstand current (4s) kA 16, 20, 25, 31.5, 40, 50 Rated peak withstand current kA 40, 50, 63, 80, 100, 125 When circuit breaker is used for controlling 6-10KV generator, if the start current is smaller than 600A, metal-oxide lightning arrester should be equipped, the specific requirement should be negotiated by customer and manufacturer; When circuit breaker is used for breaking capacitors, the rated current of capacitor should not be larger than 80% of the rated current of circuit breaker. Recommended value of action time VS1 VD4 Closing time ≤100ms ≤55-66ms Breaking time ≤50ms ≤33-45ms Arc time (50Hz) ≤15ms ≤15ms Breaking time ≤65ms ≤48-60ms Minimum continuous time of closing indication 20ms1) (100ms)2) 20ms1) (120ms)2) Minimum continuous time of breaking indication 40ms1) (100ms)2) 20ms1) (80ms)2) Note: 1) under the rated voltage of auxiliary run 2) if the relay is connected and starts, but can not break the wiring’s current. Technical data of spring operation structure of VS1, VD4 Vacuum circuit breaker, refer to Table 4 Technical parameter of spring operation structure of VS1, VD4 Vacuum circuit breaker Rated voltage V Loss voltage VA/W Stored time (Max) S VS1 VD4 VS1 VD4 AC 110 70 150 10 15 220 70 150 10 15 DC 110 70 140 10 15 220 70 140 10 15

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