IEC62271 SF6 Ring Main Unit Switchgear 33kv Gis Switchgear
Price:
USD 6000-15000
MOQ:
1
Delivery Time:
15 working days
Brand:
KNKONG
Product Description
IEC62271 SF6 Ring Main Unit Switchgear 33kv Gis Switchgear
SF6 ring main unit switchgear 11kv Ring Main Unit
Indoor switchgear
SF6 Metal-Clad Enclosed Ring Main Unit
33KV 50/60Hz, 630,1250A
OEM & ODM,Complete equipment
Meet IEC standards
Send us your SLD (Single Line Drawing) or requirements we will quote asap.
SF6 Metal-Clad Enclosed Ring Main Unit
33KV 50/60Hz, 630,1250A
OEM & ODM,Complete equipment
Meet IEC standards
Send us your SLD (Single Line Drawing) or requirements we will quote asap.
Inquire
Product Introduction
Principleedit
The ring network refers to the ring power distribution network, that is, the power supply main line forms a closed loop, and the power supply supplies power to the ring main line, and then distributes power all the way from the main line through the high-voltage switch. The advantage of this is that each power distribution branch can take power from its left main line and its right main line. When the left main line fails, it continues to receive power from the right main line, and when the right main line fails, it continues to receive power from the left main line. In this way, even though the main power supply is single-circuit power supply, However, from each distribution branch, the benefits similar to dual power supply are obtained, thereby improving the reliability of power supply.
The so-called "ring network cabinet" means that each distribution branch is equipped with a switch cabinet (outgoing switch cabinet), and the bus bar of this switch cabinet is also a part of the ring trunk line. In other words, the ring trunk line is composed of the bus bars of each outlet cabinet. Each outlet cabinet is called a "ring network cabinet". In fact, if you take out a ring network cabinet alone, you can't see the meaning of "ring network".
The rated currents of these ring mains are not large, so the high-voltage switch of the ring mains generally does not use a circuit breaker with a complicated structure, but a high-voltage load switch with a high-voltage fuse with a simple structure. In other words, the high-voltage switch in the ring main unit is generally a load switch. The ring main unit uses a load switch to operate the normal current, and a fuse to cut the short-circuit current. The combination of the two replaces the circuit breaker. Of course, this can only be limited to a certain capacity.
Such switchgear can also be used in the distribution system of non-ring network structure, so with the wide application of this switchgear, "ring network cabinet" has jumped out of the category of ring network power distribution and generally refers to load switch The high-voltage switchgear is the main switch.
Feature
1. Metal-clad and fully enclosed structure, can prevent dirt and small animals from the entrance.
2. Through the observation windows in the door panel switch position and general condition can be clearly viewed.
3. The door and switch operating handle are mechanically interlocked to ensure the door cannot be opened with the switch closed and the switch cannot be closed with the door open.
4. The switchgear use vacuum switches combined with solid insulation material. This environmentally-friendly technology avoid the uses of SF6 as an insulation gas.
5. Reliable FIVE-PREVENTION interlock can effectively prevent from mal-operation.
Technical Data
| No. | Item | Unit | Parameter | |||
| 1 | Rated voltage | kV | 12 | 24 | 36 | |
| 2 | Rated frequency | Hz | 50/60 | |||
| 3 | Rated current | A | 630(1250*) | |||
| 4 |
1min Power frequency withstand voltage |
wet | kV | 38 | 50 | 70 |
| dry | kV | 48 | 60 | 85 | ||
| 5 | Lightning impulse withstand voltage | kV | 75 | 125/150 | 170 | |
| 6 | Rated short circuit breaking current (peak) | kA | 80 | 63 | 63 | |
| 7 | Rated active load and close circuit breaking current | A | 63 | 50 | 50 | |
| 8 | Rated transferring current | A | 1700 | 1200 | 1200 | |
| 9 | Rated short circuit making current (peak) | kA | 80 | 63 | 63 | |
| 10 | Rated cable(line) charging breaking current | A |
50 and 10 50/10 |
|||
| 11 | Cable charge breaking current in earthing fault | A | 20 | 20 | 20 | |
| 12 | Rated withstand current (peak) | kA | 80 | 63 | 63 | |
| 13 | Short time withstand current (2s) | kA | 25 | 20 | 20 | |
| 14 | Mechanism life | times | 5000 | 2000 | 2000 | |
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Company
Knkong Electric Co.,Ltd
Location
No. 25 Street , Hanghai Road, Zhengzhou,Henan,China
Contact Person
Ken Chan (English)