| Muhimmiya | ROCKWILL |
| Model NO. | 420kV HV gas insualted Switchgear(GIS) 420kV HV gas insulated switchgear (GIS) |
| Rated Voltage | 420kV |
| Raitidu kọ̀ọ̀kan | 4000A |
| Siri | ZF28 |
Product overview：
ZF28-420 type GIS is composed of standard modules through flanged joint, which can meet the demand for substation optimization design through the flexible combination between modules. It saves space and conforms to technical requests.
This product can be applied to power system, power generation, rail transportation, petrochemical, metallurgy, mining, building materials and other large industrial consumer.
Features and advantages of the product：
Horizontal circuit breaker structure, integrated transportation, high space utilization.
Fusion of high parameters and high reliabilityCircuit breaker, disconnector and grounding switch have a mechanical life of 10,000 times.
Advanced circuit breaker, excellent breaking capacity.
Mature pure spring operating mechanism application.
Basin insulator with aluminum flange with double seal structure.
Import of key components, accessories and major production equipment.
The GIS phase spacing is 670mm and the standard spacing width is 2050mm (see layout). The whole interval of three-phase integrated transportation, its technological innovation level is domestic leading, international advanced level.
Arrangement of circuit breaker is horizontal, it’s convenient for overhauling and emergency maintenance; it also will make lighter impact to the ground.
Excellent insulation level and low partial discharge. The only company in the industry that can achieve: under 1.2 times phase voltage (1.2×420/√3 = 291kV), the partial discharge of intervals is lower than 5pC, the partial discharge of the insulator is lower than 3pC.
Technical Parameters：
What is a GIS device?
GIS is the English abbreviation of Gas Insulated Switchgear, which is generally translated as gas-insulated fully enclosed combined electrical appliances, usually using SF6 gas as the insulating medium, including circuit breaker (CB), disconnector (DS), earthing switch (ES, FES), bus (BUS), current transformer (CT), voltage transformer (VT), lightning arrester (LA) and other high-voltage components. At present, GIS equipment products have covered the voltage level range of 72.5 kV ~ 1200 kV.
**Note:** The provided content does not contain any text in the specified language (ha_NG). Therefore, no translation was performed. Please provide the text in the source language (e.g., English) that needs to be translated into ha_NG.
Siffar da Zafi:
A cikin zafi, elektronu a molekulai gas na SF₆ suna kama da wani yawan abin da ba a nukil. Amma, saboda inganci a kan siffar da zafi na molekulai gas na SF₆, ya fi shi gaba da sarrafa harkokin elektronu daga fuskantar zuwa mazaunuka, wanda yake taka da tsarin zafi mai kyau. A wurare IEE-Business (Gas-Insulated Switchgear), an samu zafi ne tun daga fuskantar tsari, kyakkyawa, da kuma siffar da zafi na gas na SF₆. Wannan yana taimaka waɗanda ake iya haɓaka da zafi mai kyau da ƙasa a kan bayanan aiki da wasu tsohon kaya, da kuma a kan bayanan aiki da wasu tsohon kaya.
Idan an yi aiki a cikin zafi na ƙananan, babu elektronu masu ƙwarewa a cikin gas suna samu karfi daga siffar da zafi, amma wannan karfin ba ya fi shi gaba da mutuwar da gas na molekulai su. Wannan yana taimaka waɗanda ake iya daidaita zafi mai kyau.
Na gaba da kyauka cikakkiyar karamin gasar SF6, kyauka shiga karamin hawa da kuma kyauka ainihi, samanar GIS na da muhimmanci masu tafukar fushi, kyauka shiga karamin hawa da kuma inganci, amma kyauka cikakkiyar karamin gasar SF6 yana kasance da darajar da take da aiki a kan karamin hawa, kuma zai iya canzawa cikakkiyar abin da ake da tsirrai ko abubuwa masu wani a kan GIS.
Samanar GIS ta yi aiki a kan sauran yanayi, wanda ya ba da muhimmanci masu tafukar fushi baki daya, tafukar inganci mai zurfi, tafukar inganci mai kadan, tafukar karamin hawa mai kadan, kuma tafukar karshen karamin hawa mai kadan, kuma kuna da abubuwa masu gaba-gaban da ake da su kamar aiki mai zurfi da ake yi a kan yanayin kawo karfi, kuma hanyar neman da ke da aiki mai zurfi, kuma idan yanayin kawo karfi an yi nasara da karshen jirgin sama da karamin hawa, zai iya ba da muhimmiyar abubuwa masu gaba-gaban kamar ƙarin ruwa da karamin hawa.
