Overview
The KYN 28-12 AC metal-clad indoor withdrawable switchgear (3.6-12 kV, 3-phase, AC, 50/60Hz) produced by our company is a power transmission and distribution device for accepting and distributing electric power in the sectionalized single-bus system, which is mainly used for accepting electric power of small and medium-sized generators, power distribution of industrial and mining enterprises, accepting and transmitting electric power for secondary substations, starting of large-sized HV motors and used in power plants, its functions are for control, protection and monitoring.
Product features
1.VD4 vacuum circuit breaker from ABB or domestic VS1 vacuum circuit breaker may be chosen.
2.The cubicle with high precision is assembled with imported steel plates coated with zinc & aluminum, which will not get rusty.
3.Metal-clad completely, each function unit thoroughly separated.
4.Even if the cubicle door is closed, the built-in withdrawable unit driven by a screw can be moved.
5.A simple and effective fail-safe interlock will prevent error operation.
6.Effective protection measures will ensure safety and prevent foreign materials and pests from entering.
7.The cable terminal compartment is large enough to connect lots of cables.
8.Both operation and monitoring are easy.OFast grounding switches for earthing and short-circuit.
9.Through the plateau type, seismic, internal combustion arc test, meet the demand of a broader market.
Types of meaning
| K | Y | N | 28 | - | 12 |
Met clad enclosed switchgear | Shift type | Use conditions (indoors) | Design serial number | Rated voltage (kV) |
Long service life
During the period of free maintenance, wear-resisting, anti-corrosive, quality guaranteed
Bottom of drawer
Plug in design, convenient wiring installation
Standard steel plate
Steel plate, with a standard safety when using solid durable
High quality components
The installation of high quality components is guaranteed
PRODUCT SIZE DESCRIPTION
| Height B(mm) | 2300 | |
| Width A(mm) | 40KA rated current of small branch bus is up to 1250A, thermal stable current 40KA | 800 |
| the rated current of small branch bus is over 1600A | 100 | |
| Depth C(mm) | cable incoming and out going | 1500 |
| Overhead incoming and out going | 1660 | |
| Wt.(kg) | 700-1200 | |
Product structure
A bus compartment
B circuit breaker compartment
C cable compartment
D relay instrument compartment
1.1 pressure-releaf cover
1.2 secondary passage cover
3 bus bushing
4 main bus-bar
5 stationary contact
6 contact's box
7 ст
8 grounding switch
9 cable
10 zinc-oxide surge arrester
11 grounding bus-bar
12 partition
13 shutter
14 secondary contact block
15 handcart of circuit breaker
16 heate
17 operating hole of handcart
18 operating shaft of grounding switch
19 bottom plate
Main technical parameters
| Project | Unit | Data | ||
| Rated voltage | kV | 3.6、7.2、12 | ||
| Rated frequency | Hz | 50 | ||
| Circuit breaker rated current | A | 630、 1250、 1600、 2000、 2500、 3150、 4000 | ||
| Rated current of switchgear | A | 630、 1250、 1600、 2000、 2500、 3150、 4000 | ||
| Rated short-time withstand current (4s) | kA | 16、20、25、31.5、40、50 | ||
| Rated peak withstand current (peak value) | kA | 40、50、63、80、100、125 | ||
| Rated short-circuit breaking current | kA | 16、20、25、31.5、40、50 | ||
| Rated short-circuit making current (peak value) | kA | 40、50、63、80、100、125 | ||
| Rated insulation level | 1min power frequency withstand voltage | interpolar, Between poles | kV | 24、32、42 |
| between open contacts | kV | 24、32、48 | ||
| Lightning impulse withstand voltage (peak value) | interpolar, Between poles | kV | 40、60、75 | |
| between open contacts | kV | 46、70、85 | ||
| Protection grade | ||||
| Note: 1. Short-circuit capacity of CT should be considered separately. | ||||
| 2. Rated current of 3000m~4000m above sea level W1250A Rated breaking current W31.5ka. | ||||
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