Active Member
|
[China]
Address: 21/F, Building 1, No. 816,Jinghua Road, Hi-tech Zone,Ningbo, Zhejiang, P.R. China
Contact name:Tony ma
Ningbo Tian'an Jinghua Power Technology Co., Ltd. |
|
|
High Voltage Indoor AC 80kA High Speed Earthing Switch 40.5kV
1. High Voltage Indoor AC 80kA High Speed Earthing Switch 40.5kV Description
JT8(JN)-40.5 Type indoor AC high voltage grounding switch according
to IEC standards within the design of indoor high-voltage
electrical appliances. It is a metal or other armored metal
enclosed switchgear main components. 40.5KV rated voltage and below
the three-phase AC 50Hz power system as a grounding and protection
purposes.
2. Type meaning of High Voltage Indoor AC 80kA High Speed
Earthing Switch 40.5kV
J T 8 - 40.5 / - 0
J: earthing switch
T: Cheonan products (business code)
8: design number
40.5: Rated voltage (KV)
0 : Rated short time withstand current (thermal stability current
KA / 4s)
0 : rated short-time closing current (kA)
3.High Voltage Indoor AC 80kA High Speed Earthing Switch 40.5kV Service condition
1. Altitude sea level not exceeding 1000m;
2.Ambient air temperature: +45ºC ,-25ºC ;
3.Seismic intensity not exceeding 8 degree;
4.Related humidity daily average value not more than 95%,monthly
average not more than 90%;
5.Pollution class: II
4. High Voltage Indoor AC 80kA High Speed Earthing Switch 40.5kV
Technical Data
| No. | Item | Unit | Datas | |
| 1 | Rated voltage | kV | 40.5 | |
| 2 | Rated short time within tolerance (heat-stable) current (RMS 4s) | kA | 25 | 31.5 |
| 3 | Rated peak withstand (dynamic stability) current (peak) | kA | 63 | 80 |
| 4 | Rated short-circuit current (peak) | kA | 63 | 80 |
| 5 | Rated insulation level | kV | 95 | 185 |
| 6 | Phase distance | mm | 350, 410, 460 | |
| 7 | Closing speed | m /s | >= 4 | |
| 8 | Positive pressure contacts | N | 450±50 | |
| 9 | Sub-closing operation torque | N.m | =< 200 | |
| 10 | Mechanical life | time | >= 2000 | |
5. High Voltage Indoor AC 80kA High Speed Earthing Switch 40.5kV
Structure Introduction
JT8(JN)-40.5 Type indoor high voltage grounding switch from the
undercarriage, touch knife, insulator voltage display devices
(sensors), closing spring, and three-phase short-circuit connection
contact copper components.
Brace is bent plate welded into a rectangular frame. Supply at both
ends with the assembly of the spindle bearings and bearing; a
display device voltage insulator (sensor) installed in the bottom
frame and top with J-type contact and bearing; touch knife spindle
mounted welding Shui arm, by closing spring drive shaft and drive
the touch knife switch on, so as to achieve the purpose of closing
short-circuit current.
When open and close, as long as the operating handle is rotated
with the spindle drive shaft coupled to the spring over the dead
point, closing by spring force acceleration. After closing the main
shaft connecting the crank arm and the operating shaft into a dead
point, it is possible to closing short-circuit current, touch knife
does not open when the dynamic current test.
