SDF Series Horizontal center break disconnector
Rockwill Electric GROUP Co., Ltd
16yrs 700++
staff 108000m²+m² US$150,000,000+
Key attributes
| Brand | ROCKWILL |
| Model NO. | SDF Series Horizontal center break disconnector |
| Rated voltage | 550kV |
| Rated normal current | 4000A |
| Rated short-time withstand current | 63kA |
| Series | SDF Series |
Product descriptions from the supplier
Description
Overview
The SDF disconnectors are available for up to 550 kV, 4000 A and 63 kA. These type of disconnector have a low friction design and offer minimized contact resistance. They are equipped with dead center interlocking for reliability in extreme conditions. Some other important features of these disconnectors are
No external spring in contact fingers
Superior design of mechanical interlock
Strong rotary pedestals
Ice breaking capacity
Applications
The horizontal center break disconnector is used at substations due to its simplicity and flexibility in arrangement.
Technology Parameters
Rated voltage (kV) |
72.5 |
123 |
145 |
245 |
300 |
362 |
420 |
550 |
Rated current (A) |
4000 |
|||||||
Short time withstand current (kA) |
63 |
|||||||
Power frequency withstand voltage (kV) |
||||||||
against earth |
140 |
230 |
275 |
460 |
395 |
450 |
520 |
620 |
across isolating distance |
160 |
265 |
315 |
530 |
435 |
520 |
610 |
800 |
Lightning impulse withstand voltage (kV) |
||||||||
against earth |
325 |
550 |
650 |
1050 |
1050 |
1175 |
1425 |
1550 |
across isolating distance |
375 |
630 |
750 |
1200 |
1050 |
1175 |
1425 |
1550 |
Switching impulse withstand voltage (kV) |
||||||||
against earth |
|
|
|
|
850 |
950 |
1050 |
1175 |
across isolating distance |
|
|
|
|
700 |
800 |
900 |
900 |
ROCKWILL
Rockwill Electric GROUP Co., Ltd
16yrs 700++
staff 108000m²+m² US$150,000,000+
Online store
On-time delivery rate
Response time
100.0%
≤4h
Company overview
Workplace: 108000m²m²
Total staff: 700+
Highest Annual Export(usD): 150,000,000
Services
Business Type: Design/Manufacture/Sales
Main Categories: High Voltage Electrical Apparatus
Whole life care manager
Full lifecycle management services for equipment procurement, use, maintenance, and after-sales,
ensuring safe operation of electrical equipment, continuous control, and worry-free electricity
consumption.
The equipment supplier has passed platform qualification certification and technical evaluation,
ensuring compliance, professionalism, and reliability from the source.
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