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GLX-24 Series SF6 Insulated Ring Main Unit
1.air temperature: maximum temperature :+40ºC;minimum temperature:-35ºC 2.humidity: monthly average humidity 95%; daily average humidity 90% 3.altitude above sea level: maximum installation altitude: 2500m 4.ambient air not apparently polluted by
Published in2018-09-01
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Product Description
GLX24 series Ring Main Unit is an extensible, SF6 insulated switchgear, with rated voltage of 12/24&36 KV. GLX24 unit type SF6 ring net cabinet with SF6 load switch as main switch, for whole cabinet is suitable for electric distribution automation and compact also expandable metal close switchgear. It characters in its simple structure, flexible operation, reliable interlocking and convenient installation etc, which can provide the satisfactory technical projects both for different application occasions and user. With the adoption of sensor technology and the protection relay up to date, plus the advanced technology and flexible assembly project, GLX24 unit type SF6 ring net cabinet can completely meet the requirement of continuously variable market. It can take self-produced RLS-40.5 load switch or SFG type SF6 load switch by ABB; also according to user's demand can be assembled with the internationally top-ranking, RCB series vacuum circuit breaker with permanent magnetic mechanism made by AREVA,or HD4 type SF6 circuit breaker made by AREVA, or HD4 type SF6 circuit breaker made by ABB, or with our VS1-12 type vacuum circuit breaker with permanent magnetic mechanism. Operational methods for the main switch inside ring main unit can be either manual electric power driven. And it can meet the requirement of "four controls" when matched with FTU and RTU.
1.air temperature: maximum temperature :+40ºC;minimum temperature:-35ºC
2.humidity: monthly average humidity 95%; daily average humidity 90%
3.altitude above sea level: maximum installation altitude: 2500m
4.ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
5.no frequent violent shake.
Technical parameters
Table 1: Technical data for 12KV Ring Main Unit
| Description |
|
Unit | LBS unit | Switch-fuse unit | VCB unit | Busbar subsection unit |
| Rated voltage |
|
KV | 12 | 12 | 12 | 12 |
| Power frequency withstand voltage(1 min) | phase to phase/earth | KV | 42 | 42 | 42 | 42 |
| Across the isolating distance | KV | 48 | 48 | 48 | 48 | |
| Impulse withstand voltage | phase to phase/earth | KV | 75,(95)* | 75,(95)* | 75,(95)* | 75,(95)* |
| Across the isolating distance | KV | 85,(110)* | 85,(110)* | 85,(110)* | 85,(110)* | |
| Rated frequency | Hz | 50,60 | 50,60 | 50,60 | 50,60 | |
| Rated current | A | 630 | 1 | 630 | 630 | |
| Rated short circuit breaking current | KA |
|
2 | 20,(25)* |
|
|
| Rated short time withstand current | KA/s | 20/3 (20/4,25/1)* |
|
20/3 (20/4,25/3)* | 20/3 (20/4,25/1)* | |
| Rated peak withstand current | KA | 50,(63)* |
|
50,(63)* | 50,(63)* | |
| Rated short circuit making current | KA | 50,(63)* | 2 | 50,(63)* | 50,(63)* | |
| Rated transfer current | A |
|
1800 |
|
|
|
| Rated active load breaking current | A | 630 |
|
|
630 | |
| Rated closed loop breaking current | A | 630 |
|
|
630 | |
| 5% raed active load braeking current | A | 31.5 |
|
|
31.5 | |
| Rated operation sequence |
|
|
|
0-0. 3s-CO-180s-CO |
|
|
| Mechnical lifetime | Ops | 5000 | 5000 | 10000 | 5000 | |
| Eletrical lifetime |
|
E3 |
|
E2 | E3 | |
| Thickness of stainless steel | mm | 3.0 | ||||
| Rated SF6 pressure | kPa | 30(at 20ºC,101.3kPa) | ||||
| Annual leakage rate | ≤0.02% | |||||
| Water treatment test | 12kV 24 hours(at 30 kPa under the water | |||||
| Internal arc test | 20kA 1s | |||||
| Protection degree | Gas tank | IP 67 | ||||
| Fuse holder | IP 67 | |||||
| RMU enclosure | IP 4% | |||||
Table 2: Technical data for 24KV/36KV Ring Main Unit
| NO. | Item | Unit | Parameter | ||
|
1
|
Rated voltage | KV | 24 | 36 | |
|
2
|
Rated frequency | HZ | 50/60 | ||
|
3
|
Rated current | A | 630/800 | ||
|
4
|
1 min power frequency withstand voltage |
Wet |
KV | 70 | 95 |
|
dry |
KV | 80 | 110 | ||
|
5
|
Lightning impulse withstand voltage | KV | 170 | 185 | |
|
6
|
Rated short circuit breaking current (peak) | KA | 195 | 215 | |
|
7
|
Rated active load and close circuit breaking current | A | 400/630 | ||
|
8
|
Rated transferring current | A | 1200 | 1000 | |
|
9
|
Rated short circuit making current(peak) | KA | 63 | 63 | |
|
10
|
Rated cable off load | A | 50 | ||
|
11
|
Transformer off load | A | 16 | ||
|
12
|
Rated withstand current (peak) | KA | 63 | ||
|
13
|
Short time withstand current(2s) | KA | 25 | ||
|
14
|
Mechanism life | times | 2000 | 2000 | |
Structure
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