{"id":348,"date":"2026-08-26T05:46:20","date_gmt":"2026-08-26T05:46:20","guid":{"rendered":"https:\/\/demos2us.in\/electric\/?post_type=product&p=348"},"modified":"2026-09-10T08:44:51","modified_gmt":"2026-09-10T08:44:51","slug":"7-2kv-ring-main-unit","status":"publish","type":"product","link":"https:\/\/demos2us.in\/electric\/products\/7-2kv-ring-main-unit\/","title":{"rendered":"7.2kV Ring Main Unit"},"content":{"rendered":"

The enclosure is made of aluminium-zinc plated steel sheet by CNC machine, high precise dimension, short production cycle,excellent mechanical strength and nice appearance. The busbar compartment, VCB…<\/p>\n

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Air Insulation 7.2kv Ring Main Unit Iun-Panel<\/h1>\n<\/div>\n
Features<\/strong><\/div>\n
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KYN28A-11\/24KV(GZS1) air-insulated metal-clad withdrawable switchgear\u00a0(hereinafter as \u201cswitchgear\u201d) is a necessary indoor power distribution equipment 3-phase AC 50Hz. It is mainly used to receive and distribute 3-24kV network electrical and control protection and monitoring to line circuit. Relay chamber panel can install in various types of microprocessor based relay protection device , and can realize the intelligent control system, with remote control, telemetry, remote communication and remote transfer function, through the CAN communication interface with fieldbus control network to prevent the mal-operation of circuit breaker, to prevent pushing and pulling handcart with load, to prevent grounding switch closed with charged, to prevent the grounding switch in the grounding position transmission and to prevent into live space, which is referred to as the ‘five-anti’ function. The cabinet is equipped with VS1 (ZN63), ZN12V vacuum circuit breaker, also can be equipped with imported VD4 vacuum circuit breaker and VC series vacuum contactor.\u00a0The switchgear meet the requirements of standard\u00a0IEC62271-200,IEC62271-100\u00a0etc.<\/p>\n<\/div>\n<\/div>\n

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Application<\/strong><\/div>\n
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KYN28A-12 metal clad switchgear electrical cubicle\u00a0is applicable for\u00a03.6kV ~ 12kV\u00a0with three-phase AC 50Hz single bus or single bus sectional\u00a0system. It is mainly used for substation and distribution system of power plants, substation, industrial and mining enterprises, building hotels, municipal construction and petrochemical sector as power receiving, power distribution and\u00a0the circuitcontrolling, protection and monitoring.<\/p>\n

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Service environment<\/strong><\/div>\n
1. \u00a0Ambient temperature:-10oC ~ +40oC;<\/div>\n
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2. \u00a0Altitude: Not exceed 1000m above sea level;<\/p>\n

3. Ambient humidity: Daily average RH \u2264 95%; Monthly average RH \u2264 90%<\/p>\n

4. Water vapor pressure:Daily average RH \u2264 2.2kPa; Monthly average RH \u2264 1.8kPa;<\/span><\/p>\n

5.No violent vibration, bumps and vertical gradient not more than 8\u00b0 of place<\/span><\/p>\n

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\u00a0There may be condensation, when the temperature plunged with filth, the products apply to the following two conditions more severe than normal<\/strong><\/p>\n

(1). Condensation not frequently(average monthly \u00a0not more than two times) with mild pollution;<\/p>\n

(2). There is no condensation (average yearly not more than two times) with serious pollution;<\/p>\n

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Note:<\/strong><\/p>\n

1. Allow to -30\u2103 to storage and transportation.<\/p>\n

2.When \u00a0the area of altitude exceed 1000m , according to the JB\/Z102 \u00abhigh voltage electrical appliances using the technical requirements of the altitude\u00bb , when the altitude is not more than 2000m, low pressure auxiliary equipment does not need to take any measures.<\/span><\/p>\n

3.When the actual use conditions is different with the above mentioned information, the user and the manufacturer should be negotiated<\/p>\n

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Technical data<\/strong><\/p>\n

\n\n\n\n\n\n\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n\n\n\n\n
No<\/td>\nName<\/td>\nUnit<\/td>\nParameter<\/td>\n<\/tr>\n
1<\/td>\nInsuation
\nlevel<\/td>\n		Rated voltage<\/td>\nkV<\/td>\n3.6<\/td>\n7.2<\/td>\n11<\/td>\n<\/tr>\n
1minpower frequency withstand volatge<\/td>\nkV<\/td>\n24<\/td>\n32<\/td>\n42<\/td>\n<\/tr>\n
2<\/td>\nLightning impulse withstand voltage (full wave)<\/td>\nkV<\/td>\n40<\/td>\n60<\/td>\n75<\/td>\n<\/tr>\n
3<\/td>\nRated frequency<\/td>\nHz<\/td>\n50\/60<\/td>\n<\/tr>\n
4<\/td>\nRated current<\/td>\nA<\/td>\n630.1250.1600.2000.2500.3150<\/td>\n<\/tr>\n
5<\/td>\n4s short time withstand current<\/td>\nkA<\/td>\n20\u300125\u300131\u300131.5\u300140\u300150<\/td>\n<\/tr>\n
6<\/td>\nRated peak withstand current<\/td>\nkA<\/td>\n50\u300163\u300180\u3001100\u3001125<\/td>\n<\/tr>\n
7<\/td>\nProtection level<\/td>\n<\/td>\nEnclosure IP4X, partition of each compartment is IP2X<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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Vaccum Circuit Breaker<\/strong><\/p>\n

\n\n\n\n\n\n\n\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
No<\/td>\nName<\/td>\nUnit<\/td>\nVS1\u3001ZN12V<\/td>\nVD4<\/td>\n<\/tr>\n
1<\/td>\nInsuation level<\/td>\nRated voltage<\/td>\nkV<\/td>\n11<\/td>\n<\/tr>\n
1min power frequency withstand volatge<\/td>\nkV<\/td>\n42<\/td>\n<\/tr>\n
2<\/td>\nLightning impulse withstand voltage (full wave)<\/td>\nkV<\/td>\n75<\/td>\n<\/tr>\n
3<\/td>\nRated frequency<\/td>\nHz<\/td>\n50\/60<\/td>\n<\/tr>\n
4<\/td>\nRated current<\/td>\nA<\/td>\n630.1250.1600.2000,2500.3150<\/td>\n<\/tr>\n
5<\/td>\nRated short circuit break current<\/td>\nkA<\/td>\n20\u300125\u300131\u300131.5\u300140\u300150<\/td>\n<\/tr>\n
6<\/td>\n4s short time withstand current<\/td>\nkA<\/td>\n20\u300125\u300131\u300131.5\u300140\u300150<\/td>\n<\/tr>\n
7<\/td>\nRated peak withstand current<\/td>\nkA<\/td>\n40\uff0c50\u300163\uff0c80\uff0c100\uff0c125<\/td>\n<\/tr>\n
8<\/td>\nRated operate sequence<\/td>\n<\/td>\n0-0.3S-c0180S-CO<\/td>\n<\/tr>\n
9<\/td>\nRated short circuit break current>40kA, operation sequence<\/td>\n<\/td>\n0-180sco-180s-co<\/td>\n<\/tr>\n
10<\/td>\nClosing sequence<\/td>\n<\/td>\n\u226470<\/td>\n\u224860<\/td>\n<\/tr>\n
11<\/td>\nOpen sequence<\/td>\n<\/td>\n\u226450<\/td>\n\u226445<\/td>\n<\/tr>\n
12<\/td>\nArcing time<\/td>\n<\/td>\n\u226415<\/td>\n\u226415<\/td>\n<\/tr>\n
13<\/td>\nBreak time<\/td>\n<\/td>\n\u226465<\/td>\n\u226460<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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The enclosure is made of aluminium-zinc plated steel sheet by CNC machine, high precise dimension, short production cycle,excellent mechanical strength and nice appearance. The busbar compartment, VCB handc art compartment, cable compartment and relay compartment are separated by metal sheet. Flexible operation for handcart movement, clear position instruction, the earthing switch allow to making short circuit current and creditable mechanical interlock.<\/p>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"featured_media":349,"template":"","product_category":[49,46],"class_list":["post-348","product","type-product","status-publish","has-post-thumbnail","hentry","product_category-gas-insulated-switchgear-secondary","product_category-metal-switchgear-and-rmu"],"acf":[],"_links":{"self":[{"href":"https:\/\/demos2us.in\/electric\/wp-json\/wp\/v2\/product\/348","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/demos2us.in\/electric\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/demos2us.in\/electric\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/demos2us.in\/electric\/wp-json\/wp\/v2\/media\/349"}],"wp:attachment":[{"href":"https:\/\/demos2us.in\/electric\/wp-json\/wp\/v2\/media?parent=348"}],"wp:term":[{"taxonomy":"product_category","embeddable":true,"href":"https:\/\/demos2us.in\/electric\/wp-json\/wp\/v2\/product_category?post=348"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}