DDHV Series ‘V’ type center break disconnector
Key attributes
| Brand | ROCKWILL |
| Model NO. | DDHV Series ‘V’ type center break disconnector |
| Rated voltage | 145kV |
| Rated normal current | 2000A |
| Series | DDHV Series |
Product descriptions from the supplier
Description
Overview
DDHV V type center break disconnector is a compact, reliable and easy-to operate substation equipment.
Suitable for applications up to 145 kV voltage level, DDHV is designed for installation in outdoor switchyards. It has two moving insulators per phase arranged in a ‘V’ configuration, which makes DDHV design compact and simple. Due to this, DDHV is a preferred solution for substations where space is costly or limited.
DDHV disconnectors enable flexible design and reliable operations. Built-on earth switches are available and can be mounted on one or both sides of the disconnector.
Applications
Substations in small areas
Pole-top mounted
Mobile substations
Technology Parameters
Rated voltage (kV) |
126 |
145 |
Rated current (A) |
2000 |
|
Short time withstand current (kA) |
44 |
|
Power frequency withstand voltage (kV) |
||
against earth |
230 |
275 |
across isolating distance |
230 |
369 |
Lightning impulse withstand voltage (kV) |
||
against earth |
550 |
650 |
across isolating distance |
550 |
750 |
Resistance of circuit（μΩ） |
120 |
120 |
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