DRM-24 SF6 Gas Insulated Switchgear 24KV
Model and meaning

Product conformity
◆International standard
IEC60056,IEC60298,IEC60129,IEC60420,IEC60265,IEC60694,etc.
◆Chinese standard
GB3804,GB3906,GB11022,etc.
Normal service condition
suitable for high and low temperature (+40°C ~-40°C), wet, dusty, salt pollution, mine, high altitude (less than 4000 meters) and other environments.short-term immersion within 24 hours does not affect the use.
Note: If the altitude is higher, please indicate the specific altitude.
Main features of product
◆DRM-24 series gas cabinet SF6 gas as arc extinguishing and insulation medium.
◆Switch cabinet is fully sealed, fully insulated structure; Bus bars, switches and live parts are completely enclosed in stainless steel housing.
◆The chamber is filled with 0 04Mpa SF6 gas, the protection level is up to IP67: The whole switch device is completely unaffected by the external environment, even in extreme cases such as short-term flooding can ensure the normal operation of the switch, and the product is maintenance-free for life.
◆The switchgear has a perfect "five prevention" interlock device, which completely prevents personnel and equipment operation failures caused by human error.
◆All switchgear has a reliable safe pressure relief channel, which can guarantee the personal safety of the operator even in extreme circumstances.
◆Switchgear is divided into two categories: fixed unit combination and expandable unit combination.
◆The switch cabinet usually enters and exits from the front, and can also realize side exit or side expansion according to different installation positions.
◆The size of the cabinet is easy to install, and can be suitable for small space and poor environmental conditions.
◆The switch cabinet can be configured with electric, remote control and monitoring devices according to different needs of users.
Flexible outlet and expansion methods
All DRM-24 modules can be connected by side outlet and side expansion or side outlet and top expansion according to user requirements, which meets the needs of power supply schemes to the maximum extent.
Performance index
Sf6 gas pressure The absolute pressure at 20°C is 0.04Mpa
Annual gas leakage rate 0.05%
Class of protection IP67
Air chamber stainless steel thickness The 3.0 mm
Bus bar
Switchgear inside the bus 400mm²Cu
Switchgear ground bus 150mm²Cu
colour
Switch cabinet front panel RAL 7012
Side panel and cable room front cover plate RAL 7035
Meet the criteria
GB/T11022 GB3906 GB1985 GB3309
GB16926 GB38041 GB1984
IEC60056 IEC60129 IEC60256
IEC60298 IEC60420 IEC60694
Normal operating environment conditions
Maximum temperature 40℃
Minimum temperature To 40 °C
Maximum mean relative humidity ≤ 95%
Sea level ≤ 2000 m
Main technical parametersin
|
Name |
C module |
F module |
V module |
CB module |
||
|
Load switch |
Combination apparatus |
Vacuum switch |
Isolation/ground switch |
Vacuum circuit breaker |
Isolation/ground switch |
|
|
Rated voltage kV |
24 |
24 |
24 |
24 |
24 |
24 |
|
Rated frequency Hz |
50/60 |
50/60 |
50/60 |
50/60 |
50/60 |
50/60 |
|
Power frequency withstand voltage(phase/ fracture)kV |
65/79 |
65/79 |
65/79 |
65/79 |
65/79 |
65/79 |
|
Lightning impulse withstand voltage kV |
125/145 |
125/145 |
125/145 |
125/145 |
125/145 |
125/145 |
|
Rated current A |
630 |
note |
630 |
630 |
630 |
630 |
Breaking capacit
|
Rated closed-loop breaking current A |
630 |
|
|
|
|
|
|
Rated cable charging breaking current A |
10 |
|
|
|
|
|
|
Rated short circuit closing current(peak)A |
50 |
|
|
|
|
|
|
Rated peak withstand current kA |
50 |
80 |
|
|
|
|
|
Rated short-time withstand current kA/3s |
20 |
|
|
|
|
|
|
Rated short circuit breaking current kA |
|
31.5 |
20 |
|
20 |
|
|
Rated transfer current A |
|
1400 |
|
|
|
|
|
Fuse maximum current A |
- |
63 |
|
|
|
|
|
Loop resistance-n |
≤200 |
≤400 |
|
|
|
|
|
Mechanical life(second) |
5000 |
3000 |
5000 |
5000 |
5000 |
5000 |
(Note: 1) depends on the current rating of the fuse.
DRM-24 type switch cabinet structure

1- Fuse room
2-Capacitive voltage indicator
3- Short circuit ground fault indicator (accessories)
4-Pressure indicator
5-Standard with serial number
6-Analog circuit diagram
7- Fuse fuse indicator
8- Padlock device on the panel
9- Cable room
10- RTU installation room
11-interlocking(Accessories)
12-Circuit breaker operating hole
13- Load switch operating hole
14- Ground switch operation hole
15-lsolation switch operating hole
16-Switch button
17- Closing button
All kinds of non-extended standard combination unit cabinets
Non-extended standard module
The following 15 standard package combinations are available
Each module of the DRM-24 switchgear has the following configurations
D Cabinet - Lifting module
Standard configuration and features in "Cable Connection Module without ground Knife'
Cabinet C- Load switch module
Standard configuration and features in "'Load Switch Module"
Cabinet F - load switch fuse combination electrical module
Standard configuration and features in "Load Switch Fuse Combination Electrical Module"
V Cabinet -Vacuum switch module
Standard configuration and features in Vacuum Switch Module
Each module of the DRM-24 switchgear has the following configurations
◆Capacitive voltage indicator for inlet bushing
◆Install a pressure gauge for monitoring Sf6 density in each air chamber
◆Lifting lug for lifting
◆Operating handle
Assorting
◆Electric operating mechanism
◆Cable short circuit and ground fault indicator
◆Current transformer and meter
◆Remote monitoring and connection
All kinds of non-extended standard combination unit cabinets
























