| Brand | ROCKWILL |
| Model NO. | DS1 12kV 40.5kV 72.5kV 225kV High voltage disconnect switch Direct Supply from China |
| Rated voltage | 72.5kV |
| Rated normal current | 2000A |
| Rated frequency | 50/60Hz |
| Rated peak value withstand current | 80kA |
| Rated short-time withstand current | 31.5kA |
| Series | DS1 |
Product introduction：
DS1-12、40.5、72.5 switch disconnectors are kinds of outdoor HV electricity transmission equipment’s at three-phase AC frequency of 50Hz/60Hz. It is used for breaking or connecting HV lines under no loads so that the power lines can be changed and connected and the way the electricity runs is changed. In addition, it can be used to exercise safe electrical insulation for such HV electric apparatuses as bus and break.
GW1 switch disconnector have two insulators with vertical open jewels. Vertical breaks Will be formed after closing, phase spacing can be educed. Its structure is simple, and it is a Widely used structure in early switch disconnector
Product is made of conductive am, post insulator, operating insulator, and base. Conductive arm is derived by operation and connecting rod about 50 •tums up and down, complete the opening and closing operation. According the need, we can match manual or electric mechanism.
Main characteristic：
The conductive arm, made of Cu-alloy of high conductance rate is characteristic of high mechanical strength, large radiation area.
Self-energy contact finger-Pressure and stable, self-energy contact finger is characterized by high elasticity, high conductivity, high temperature resistant, corrosion resistant properties. The end of the contact finger is fixed, it can avoid increasing contact resistance. Tile contact finger has been acknowledged by the China National Utility Model Patent. The structure has been us的 more than ten years, more than 100000 sets, without overheating feedback.
Tile dynamic contact part adopts the self-cleaning structure. Tile products cleaning the contact surface during close and open operation itself, which reduce the contact resistance and avoid healing of contact surface.
The rotating parts of Switch disconnector are designed to be free maintenance. Imported self-lubricating shaft sleeve, high quality stainless steel shaft pin, long-lasting aviation grease are used for forever flexile rotation and no clamping stagnation
All Switch disconnectors are delivered after complete assembly and adjustment. The product is convention to install, significantly reducing installation work on site.
Provide one-key sequential control "double confirmation" function expansion
Main technical parameters：
Among these voltage levels 225kV/230kV/330kV/345kV Disconnect Switch, the rated short-circuit breaking current is 63kA, and customization is available.
NO |
Specifications |
Unit |
Value |
|||
1 |
Rated voltage |
kV |
12 |
40.5 |
72.5 |
|
2 |
1min power frequency withstand voltage (r.m.s) |
Phase to phase to earth |
kV |
55 |
95 |
107 |
Across isolating distance |
kV |
48 |
118 |
133 |
||
3 |
Lightning impulse withstand voltage (peak 1.2/50μs) |
Phase to phase to earth Across isolating distance |
kV |
96 |
185 |
209 |
kV |
85 |
215 |
243 |
|||
4 |
Rated frequency |
Hz |
50/60 |
|||
5 |
Rated current |
A |
630/1250/2000/2500 |
|||
6 |
Rated short - time withstand current (r.m.s) |
kA |
31.5/40 |
|||
7 |
Rated peak withstand current |
kA |
80/100 |
|||
8 |
Rated short - circuit withstand time |
s |
4 |
|||
9 |
Wiring terminal static mechanical load |
Longitudinal |
N |
500 |
1000 |
1000 |
Horizontal |
N |
252 |
750 |
750 |
||
Vertical |
N |
300 |
750 |
750 |
||
10 |
Mechanical life |
Times |
10K |
|||
11 |
Motor operating mechanism |
Model |
CJ12 |
|||
12 |
Motor voltage |
V |
AC380/DC220/DC110 |
|||
13 |
Control circuit's voltage |
V |
AC380/AC220/DC220/DC110 |
|||
14 |
Opening/closing time |
S |
7±1 |
|||
15 |
Manual operating mechanism |
Model |
CS14G |
|||
Order notice ：
Product model, rated voltage, rated current, creepage distance must be specified at the goods-ordering time;
The disconnect switch offers several options of grounding;
The operating mechanism, motor voltage, control voltage and the number of contacts for auxiliary switch;
Installation method.
Considering the requirements for equipment reliability and frequent operation in wind farm step-up substations, the following models are recommended:
Rockwill Electric: DS4C-252/4000, with voltage and current parameters highly compatible for outdoor applications in wind power scenarios, providing isolation functions to ensure operational safety.
Siyuan Electric: GW5-G-252D/2000, an improved design that enhances contact wear resistance and overall reliability.
Changgao Electric: GW5C-252DD/3150, specifically designed for renewable energy projects, featuring rapid response and high reliability.
Shandong Taikai: GW5-126D/2000, while with a lower voltage rating, is a suitable option for wind farm step-up substations at 126kV and below.
Comparison Points:
Operational Lifespan: The "G" improved version from Siyuan and the "C" optimized version from Changgao emphasize product durability, making them suitable for frequent operation scenarios.
Cost-Effectiveness: Products from Rockwill and Taikai are renowned for their cost-performance advantages, making them ideal choices when budget constraints are a concern.
