High-voltage Switchgear
High-voltage Switchgear
HXGN¹5-12(F, R)box fixed ac metal-enclosed switchgear ring netwok(hereinafter referred to as "ing network cabiner", is designed for urban power grid renovation and constuction needs new type of switch devices.In the power supply system as well s the breaking load curent and short dircuit curent and dose shortcicuit current, suitable for3 to10k, 50hz power distribution system.Widely used in urban power gnid constuction and renovation project, industrial and mining enterprises, high-rse buildings and public facilies, etc., as a ring net power supply unit and terminal equip- ment, play the power of the spring operating mechanism, the institution can be manuly operation, can also be electic operation.Grounding switch and solating switch with hand operating mechanism, this ring network cabinet complete sex strong, small olume, no combustion and explosion dan- ger, has reliable "ive prevention"function.
The ring network cabinet in accordance with the relevant provisions of the standard GB3906, IEC60420 etc.
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Normal Conditions of Use
1. ambient air temperature:15℃~+40℃
2. Height: 1000mand below:Humidity conditions:
3. day average no greater than 95%, water vapor pressure, average no more than 2.2 kPa;
Monthly average no greater than 90%, the water vapor pressure on the average no more than 1.8kPa.
4. earthquake intensity:no more than 8 degrees;
5. no corrosive or flammable gases such as obvious pollution places.
Note: beyond the nomal conditionsof use, theuser can negotiatewith our company.
The Main Technical Parameters
The serial number | The name of the | unit | Theparameter value | |
| 1 | The rated voltage | kV | 10 | |
| 2 | Rated frequency | HZ | 50 | |
| 3 | Rated current mistress line | A | 630 | |
| 4 | Rated short-time resistance current | KA | 20 | |
| 5 | Rated short-time resistance current duration | S | 4 | |
| 6 | Close the current of rated short circuit | KA | 50 | |
| 7 | Rated current peak tolerance | KA | 50 | |
| 8 | Active load open circuit current rating | A | 630 | |
| 9 | The nominal closed-loop open circuit current | A | 630 | |
| 10 | Fuse rated current | A | 20~125 | |
| 11 | Transfer current rating | A | 3150 | |
| 12 | No-load transformer open circuit current rating | 1250 kv transformer no-load curent | ||
| 13 | LminLmin short-time power frequency withstand voltage | KV | 42(48)isolation 1250 kv | |
| 14 | Lightning shock pressure rating | KV | 75(85)isolation | |
| 15 | Switch operating torque | N.m | <80 | |
| 16 | Mechanicallife | The vacuum load switch | time | 10000 |
| Isolation, grounding cutter | 2000 | |||
Structural Characteristics
1. structure characteristics
1.1 ring network cabinet with2 mm thick coated aluminium zinc plate riveting molding, cabinet has two plate after pressure relief hole, one is for the cable room, another is for load switch/busbar chamber.This structure can maximize guarante personal safety and relable operation equip-
ment.
1.2 in ring network cabinet wih FZN21-12d type load switch or FZRN21-12dtype use combination electic appliance, the type of electric ap- pliance with isolating switch, vacuum load switch, grounding and a half open, and isolating switch and earth switch has the obvious fracture.
1.3 isolating switch, vacuum load switch, grounding switch, cupboard door has perfect and reliable mechanicalinkage, interlock device, can effectively prevent wrong operation, maintenance and ensure safety.
1.4 ensuring can be manual, electric operation.
1.5 measuring tank ofcupboard door, the instrument door aluminum sealing pin.
1.6 fuse combination electrical cabinets, fusion tube wih a firing pin.Short circuit conditions, firing pin impact tipping mechanism and realize the fast open circuit, can effectively protect the electrical equipment.
1.7 ringnetwork cabinet USES positve operation, reliable wall installation.
2. the "five prevention"locking function.
2.1 either operation:only when the cabinet door closed and locked, operate grounding switch to "on"postion, to operate load switch to clos- ing position.
2.2 outage operation:when theload switch in the isolated posltion, in orderto close the grounding switch, grounding switch in the closing pos- tion, insert the insulation plate in place, can open cupboard door.
2.3 requires vacuum arcing chamber and the solation knife have reliable interlocking, the solation knife and, grounding knife and cupboard door interock, insulating clapboard and cupboard door interlock.
Ring Network Powersupply Principle
Ring network power supply generally consists of three basic unit (see photo)as ring netwok unitinto the outlet ark, when any circuit mafunc- tion, timely, and user transformer branch by another unit to ensure continuous power supply.Users back to the vessel network cabinet for transformer protection and isolation effect, ease of maintenance.
Ring network cabinet can bearbirary extension, and can according to user requirements by basic unit constitute a variety of combination plan.
Ordering Instructions
When you order it should providethe following information:
1. the main wiing scheme fgure number, purpose and single system diagram, rated voltage, rated current, ated short cicuit breaking current, transformer room layout and thearrangement of switchgear configuration diagram, etc.;
2. switchgear control, measurement and protection function of demands, and other atesia and automatic device and schematic diagram;
3. switchgear main electric component model, specification and quantity;
Orinto theline between
4. such as switchgear cabinets need bus bridge conecion, should provide bus bar broken ated carying capacity of thebridge, busbar bridge span, is apart from the highly specific requirements, such as data;
5. switch cabinets used in special environmental conditions, to be detailed in order;
