1、 KYN28-12 series High voltage switch cabinet
KYN28A-12 complete set of high-voltage switchgear is actually a power distribution device used for power transmission and distribution, power conversion, control and protection in the power system. It can be synchronized with the high-voltage solid state soft start cabinet electric machinery Excitation cabinet, winding type and squirrel cage type water resistance cabinet, magnetic control soft start cabinet and other supporting products are used together. It is also called armored mobile metal enclosed switchgear. It has simple structure and is used for KYN28-12 armored handcart cabinet steel plate The product consists of four parts: front cabinet (handcart room), rear cabinet (bus room and incoming/outgoing line room), relay instrument room and handcart. Each functional unit of the cabinet is separated by grounding steel plate, connected by bolts, and connected between cabinets epoxy The poured bus support sleeve is separated. The protection level between the shell and the partition meets the requirements of IP2X. The product has compact structure, convenient incoming and outgoing lines, overhead incoming and outgoing lines Cable Right connection function of incoming and outgoing lines.
2、 Analysis Table of Delivery Inspection Report of KYN28-12 Series High Voltage Switchgear
S/N | Inspection items | Inspection contents and standard requirements | Inspection data | conclusion |
one | General inspection | Cabinet body, protection grade, electrical component installation, wiring and bus installation shall comply with the provisions of 5.2 and 3 in the enterprise standard of this product. | nothing | qualified |
two | No load test shall be carried out to check whether the vacuum circuit breaker is working normally on/off. | Short circuit the two lines 103 and 127 of the terminal block, simulate the closing signal to the high-voltage cabinet, close the high-voltage vacuum circuit breaker, press the opening button, and open the high-voltage vacuum circuit breaker. | nothing | qualified |
three | Electrical clearance and creepage distance inspection. | Comply with the enterprise standard GB7251.1-2005. | nothing | qualified |
four | Electrical connection, busbar, and insulated conductor. | Comply with 7 in the enterprise standard GB7251.1-2005. 4D. | nothing | qualified |
five | Voltage withstand test. | 1. High voltage disconnector phase to phase and ground withstand voltage test. | 38000V/1min | qualified |
2. High voltage vacuum circuit breaker. Phase to phase and ground withstand voltage test. | 38000V/1min | qualified |
3. High voltage current transformer, ground withstand voltage test. | 38000V/1min | qualified |
3. High voltage voltage transformer, ground withstand voltage test. | 38000V/1min | qualified |
six | Relay protection experiment | 1. The voltage loss protection of voltage relay is normal. | nothing | qualified |
2. The overcurrent protection of overcurrent relay is normal. | nothing | qualified |
seven | Electromagnetic lock protection experiment | The circuit breaker disconnects the electromagnetic lock. | nothing | qualified |
3、 Service conditions
A Ambient air temperature: - 15 º C-40 º C.
B The altitude of the installation site shall not exceed 2000m. Special circumstances shall be discussed separately.
C The daily average atmospheric relative humidity shall not exceed 95%, and the monthly average shall not exceed 90%.
D In the medium without explosion hazard, and there is no gas and dust (including conductive dust) that can corrode metal and damage insulation.
E There is no significant vibration and impact at the installation site.
F Working power supply AC 220 V, 50Hz
Main electrical technical parameters of KYN28A-12 mid mounted metal armored high-voltage switchgear:
Rated voltage: 12KV (10KV)
Rated frequency: 50Hz
1-minute power frequency withstand voltage: on-site value ≥ 42KV/factory test value ≥ 49kV
Lightning impulse withstand voltage: on-site value ≥ 75KV/factory test value ≥ 88kV
Rated current: 1250A
4s thermal stability current (effective value): 31.5KA (40KA)
Dynamic stability current (peak value): ≥ 80KA (125KA)
Overall dimension: W x D x H=800x1500x2200
Primary equipment in cabinet
(1) 12kv solid sealed high-voltage vacuum circuit breaker
The vacuum circuit breaker adopts the product model VSM-12KV-630A/31.5KA of Anhui Xinlong Low Voltage Electrical Co., Ltd.
(2) Current transformer
Rated voltage: 10kV
Higher working voltage: 12kV
Rated frequency: 50Hz
1-minute power frequency withstand voltage: on-site value ≥ 42KV/factory test value ≥ 49kV
Lightning impulse withstand voltage: on-site value ≥ 75kV/factory test value ≥ 88kV
Accuracy class: 0.5/10P20
Rated thermal stability current for 1s: ≥ 31.5kA
Rated dynamic stability current: ≥ 80kA
Rated output: ≥ 15VA
Xiangyang Aodong Electric welcomes new and old customers to call for inquiry!!
Detail Drawing of Main Buttons of KYN28-12 High voltage Switchgear
Main technical parameters of KYN28-12 high-voltage switchgear
Switch cabinet model | Rated current (A) | Rated voltage （KV） | Rated breaking current (only referring to circuit breaker KA) |
KYN28-12/630 | six hundred and thirty | ten | twenty ，31.5，40 |
KYN28-12/1250 | one thousand two hundred and fifty | ten | twenty ，31.5，40 |
KYN28-12/1600 | one thousand and six hundred | ten | twenty ，31.5，40 |
KYN28-12/2000 | two thousand | ten | twenty ，31.5，40 |
KYN28-12/3150 | three thousand one hundred and fifty | ten | twenty ，31.5，40 |
