Kyn28-12 fixed enclosed switchgear (hereinafter referred to as switchgear) is a complete set of high-voltage electrical products of our company, which meets the requirements of national standard GB3906 "3-35kv AC metal enclosed switchgear" and dlt404 "technical conditions for ordering indoor AC high-voltage switchgear" of Ministry of electric power, and also meets the requirements of iec60298 "requirements for AC Jinli enclosed switchgear and control equipment above 1kV and below 52kv".
The product is small in size, only half of the volume of ordinary switch cabinet; the circuit breaker has the advantages of high reliability and good performance; the "five prevention" interlocking mechanism is reliable and simple. The switchgear is a 3.6 kV, 7.2 kV, 12kV three-phase AC 50 Hz single bus sectional indoor integrated device, which is used for receiving and distributing electric energy. It can be used in all kinds of power plants, substations, industrial and mining enterprises, high-rise buildings and other places. It can also be combined with ring main unit to be used in switching station.
Product specifications
Model | Kyn28-12 high voltage substation transformer cabinet | Cabinet type and control panel: high voltage switchgear (button control) | |
Serial number | Project | Company | Technical parameter |
1 | Rated voltage | kV | 3.6，7.2，12 |
2 | Rated power frequency withstand voltage | kV | To ground, interphase: 42: fracture: 48 |
3 | Rated lightning impulse withstand voltage | kV | To ground, interphase: 75: fracture: 85 |
4 | Rated frequency | Hz | 50 |
5 | Rated current | A | 630，1250， |
6 | Rated short circuit breaking current (effective value) | kA | 20，25，31.5， |
7 | Rated short circuit making current (peak value) | kA | 50，63，80， |
8 | Rated dynamic stability current (peak value) | kA | 50，63，80 |
9 | Rated thermal stability current 4S (effective value) | kA | 20，25，31.5 |
10 | Protection level | IP2X | |
11 | Overall dimension (width × depth × height) | mm | 1100×1100×2400 |
12 | weight | kg | ≈600 |
Normal use conditions
◇The altitude shall not exceed 1000m.
◇The ambient temperature: - 25 ℃: ~ + 40 ℃, and the average temperature within 24 hours shall not exceed + 35 ℃.
◇The horizontal inclination is not more than 3 degrees.
◇The seismic intensity shall not exceed 8 degrees.
◇There is no severe vibration, shock and explosion dangerous places.
Structural features
◇The cabinet body is welded with high quality angle steel.
◇The circuit breaker room is located in the middle (lower) part of the cabinet, which is convenient for installation, debugging and maintenance. Standard equipped with VS1 circuit breaker, and with pressure release channel, to ensure personal safety.
◇Reliable rotary disconnector is adopted, which can safely enter the circuit breaker room for maintenance when the main bus is live.
◇The protection level of the whole cabinet is 2 IPX.
◇Equipped with reliable and fully functional mandatory mechanical locking device, simple and effective to meet the "five prevention" requirements.
◇Have reliable grounding system.
◇The door is equipped with an observation window, which can clearly observe the working state of the components in the cabinet.
◇The operating mechanism adopts JSXGN locking mechanism used in xgn2-12 cabinet, which is simple, reliable, convenient and practical.
◇The incoming and outgoing cables are lower than the front of the cabinet, which is convenient for users to connect.
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