24kV 630A ASNA Switchgear/RMU
The 24kV Atmospheric pressure Sealed Nature-air insulated Switchgear/RMU is a full circuit breaker solution for future grid. Air-insulated, with equal pressure inside and outside the cabinet,SF6 free, no leakage, maintenance-free throughout its life cycle, and earthing capacity of E2 grade. Provide a good power supply guarantee for electrical equipment.
Comply with F-Gas regulation(EU)2024/573
5.0
Rated Current:
630A
Rated Voltage:
24kV
design customization
Please fill out the form below to request a quote or to request more information about us. Please be sure to upload customized requirement documents or pictures, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
Please fill out the form below to request a quote or to request more information about us. please be as detailed as possible in your message, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
High quality for HMpower is not checked by us and commented by our customers.
What is ASNA RMU?
ASNA means:Atmospheric pressure Sealed Nature-Air insulated RMU
ASNA is a brand new type of RMU that uses nature-air as the main insulation medium.
Its main electrical circuits are sealed within an Atmospheric pressure sealed cabinet that maintains the same pressure as the surrounding environment and is equipped with filtration and pressure balance functions.
During its entire life cycle, there is no risk of air leakage, no need for pressure monitoring, and it can prevent dust, solid particles, salt fog particles, etc. from entering the sealed cabinet .
Advantages
SF6 free,Comply with F-Gas regulation(EU)2024/573
Atmospheric pressure with no air leakage, no air charging, no maintenance for life span
Single phase insulation structure design to eradicate short-circirt between phases completely
Optimized electric field distribution to reduce electric charge concentration
Line side three position disconnector with E2 earthing capacity
Full CB solution for future grid
Name |
Unit |
Smart Ring |
|||
Rated voltage(Ur) |
kV |
24 |
|||
Rated frequency(fr) |
Hz |
50 |
|||
Rated current(lr) |
A |
630 |
|||
Rated Short-duration power-frequency withstand voltage(Ud) |
Common value |
kV |
50 |
||
Across the isolating distance |
60 |
||||
Rated Lightning impulse withstand voltage(up) |
Common value |
kV |
125 |
||
Across the isolating distance |
145 |
||||
Rated short-time withstand current(lk) |
kA |
20 |
|||
Rated short-time duration(tk) |
s |
4 |
|||
Rated peak withstand current(lp) |
kA |
50 |
|||
Rated short-circuit breaking current(lsc) |
kA |
20 |
|||
Rated short-circuit making current(lma) |
Vacuum interrupter |
kA |
50 |
||
Earthing Switch | |||||
Mechanical endurance |
Circuit-breaker |
time |
10000 |
||
Isolator |
time |
3000 |
|||
Earthing Switch |
time |
3000 |
|||
Electrical endurance |
Circuit-breaker |
class |
E2 |
||
Earthing Switch |
class |
E2 |
|||
Degree of protection by enclosure |
|
IP4X |
|||
Degree of protection by Fully Sealed tank |
|
IP65 |
|||
|
Dimension Low voltage chamber not included |
B |
Circuit-breaker unit |
W(mm) |
550 |
|
BB |
Circuit-breaker unit with 2 in 1 |
1030 |
|||
BBB |
Circuit-breaker unit with 3 in 1 |
1510 |
|||
PT |
Busbar PT unit |
720 |
|||
M |
Metering unit |
1010 |
|||
-- |
-- |
D(mm) |
850,12501) |
||
-- |
-- |
H(mm) |
1890,17002) |
||
1)1250mm is the depth of the metering unit
2)1700mm is the solution for the low cable room of the CB unit
B(Circuit-breaker unit)
BB(CB unit with2 in 1)
BBB(CB unit with 3in 1)
PT(Busbar PTunit)
M(Metering unit)
Note: "↠" and "↞" in the diagram are expandable kits.
Flexible combination can be customized as request. Please consult the manufacturer if you have any question.
description2
FAQ
-
How does the RMU ensures safe and reliable operation?
A:The ASNA RMU achieves safe and reliable operation through three key aspects:
First, its atmospheric pressure fully sealed system acts as a protective barrier, shielding the RMU from external environmental influences and ensuring stable operation at all times.
Second, the single-phase insulation design inside the switchgear eliminates the risk of internal arcing explosions, further enhancing operational safety.
Third, Eliminate the risk of insulation performance decline and potential discharge caused by the drop in gas pressure inside the cabinet -
What is the installation requirement?
A:The ASNA RMU is a fixed structure that can be placed in an electrical sealed cabinet or a box-type substation.Reserve an operating space of 80CM is retained in front of the RMU. Cable installation adopts the way of bottom in and bottom out. If you need other installation methods, please contact us. -
Is there any possibility of combining the HM POWER's RMU with other brands' switchgear?
A:In principle, it is not allowed.We do not recom erent brands of switchgear vary in their plug designs, circuit configurations, and electrical parameter matching.
Combining switchgear from different brands may lead to compatibility issues, which pose potential safety -
Apart from CB unit, are there any other types of unit?
A:In addition to CB unit, there are also Metering unit, PT unit, Busbar sectionliser unit, etc. Different unit types can be configured according to different schemes
HM Power (Guangdong) Co., Ltd. has distribution network throughout the country.
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