自動電氣控制器檢測

自動電氣控制器檢測項目報價？??解決方案？??檢測周期？??樣品要求？

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GB/T 14048.5-2017低壓開關(guān)設(shè)備和控制設(shè)備 第5-1部分:控制電路電器和開關(guān)元件 機電式控制電路電器

《低壓開關(guān)設(shè)備和控制設(shè)備》的本部分適用于在開關(guān)設(shè)備和控制設(shè)備中作控制、信號指示、聯(lián)鎖等用途的控制電路電器和開關(guān)元件。本部分適用于額定電壓交流不超過1 000 V(頻率不超過1 000 Hz)或直流不超過600 V的控制電路電器。對于工作電壓低于交流或直流100 V的控制電路電器，見4.3.2.2。本部分適用于下列規(guī)定型式的控制電路電器：——人力操作控制開關(guān)，例如：按鈕、旋轉(zhuǎn)開關(guān)、腳踏開關(guān)等；——電磁操作控制開關(guān)，具有延時或瞬時動作，例如：接觸器式繼電器；——指示開關(guān)，例如：壓力開關(guān)、溫敏開關(guān)(熱敏開關(guān))、程控器等。——位置開關(guān)，例如：由機器或機械的一部分操控的控制開關(guān)；——有關(guān)的控制電路電器，例如：指示燈等。本部分也適用于與其他電器(其主電路符合其他標(biāo)準(zhǔn))相關(guān)聯(lián)的規(guī)定型式的開關(guān)元件，如：——開關(guān)電器(例如：接觸器、斷路器等)的輔助觸頭，該觸頭并不僅僅用于對開關(guān)電器線圈的控制；——外殼門上的聯(lián)鎖觸頭；——旋轉(zhuǎn)開關(guān)的控制電路觸頭；——過載繼電器的控制電路觸頭。接觸器式繼電器除符合本部分規(guī)定的使用類別外，還應(yīng)符合IEC 60947-4-1:2009+A1:2012的有關(guān)要求及試驗。本部分不包括GB/T 14598或IEC 61810系列標(biāo)準(zhǔn)中涉及的繼電器或家用及類似用途的自動電氣控制器件。指示燈、按鈕等的顏色要求見GB/T 4025—2010，也可見照明委員會(CIE)出版的CIE S 0004/E—2001。本部分的目的是規(guī)定：a)　控制電路電器的特性；b)　有關(guān)下列內(nèi)容的電氣和機械要求：1)　需執(zhí)行的各種工作制；2)　額定性能和標(biāo)志的含義；3)　驗證額定性能的試驗。c)　控制電路電器應(yīng)滿足以下有關(guān)功能要求：1)　環(huán)境條件，包括封閉式裝置的環(huán)境條件；2)　介電性能；3)　接線端子。

GB/T 27748.1-2017固定式燃料電池發(fā)電系統(tǒng) 第1部分:安全

GB/T 27748的本部分是產(chǎn)品的安全標(biāo)準(zhǔn)，適用于固定式燃料電池發(fā)電系統(tǒng)，該系統(tǒng)可以是組裝的，自成體系的或由工廠提供完整集成系統(tǒng)的形式，均通過電化學(xué)反應(yīng)來發(fā)電。本部分適用于：——直接或通過轉(zhuǎn)換開關(guān)與主網(wǎng)連接，或與獨立配電系統(tǒng)連接的系統(tǒng)；——提供交流電或直流電的系統(tǒng)；——具有或不具有回收可用熱量能力的系統(tǒng)；——使用以下各種燃料工作的系統(tǒng)：a)　天然氣或其他來源于可再生燃料(生物質(zhì))或化石燃料的富含甲烷的氣體，比如垃圾填埋氣、沼氣和煤層氣等；b)　來源于石油精制的燃料，例如柴油、汽油、煤油以及液化石油氣，如丙烷和丁烷；c)　來源于可再生燃料(生物質(zhì))或化石燃料的醇類、酯類、醚類、醛類、酮類、費托法合成液體和其他富氫的有機化合物，例如甲醇、乙醇、二甲醚、生物柴油等；d)　氫、含氫氣的氣體混合物，例如合成氣、民用燃?xì)獾?。本部分不適用于于：——微型燃料電池發(fā)電系統(tǒng)；——便攜式燃料電池發(fā)電系統(tǒng)；——驅(qū)動式燃料電池發(fā)電系統(tǒng)。本部分適用于應(yīng)用在商業(yè)、工業(yè)和家庭等領(lǐng)域，安裝在室內(nèi)和室外等無危害(未劃分等級)區(qū)域的固定式燃料電池發(fā)電系統(tǒng)。本標(biāo)準(zhǔn)考慮了燃料電池發(fā)電系統(tǒng)在可預(yù)期的情況下和在制造商可預(yù)設(shè)條件下使用時，所有涉及燃料電池系統(tǒng)的重大危險、危險場景和事件，但不包括與環(huán)境兼容性(安裝條件)有關(guān)的各種危險。本標(biāo)準(zhǔn)規(guī)定的危險情況僅限于可能對人身造成的傷害，或僅對燃料電池發(fā)電系統(tǒng)之外造成的破壞。本標(biāo)準(zhǔn)不涉及對燃料電池內(nèi)部損壞的保護，只要這種內(nèi)部損壞不會對燃料電池外部產(chǎn)生危害。本標(biāo)準(zhǔn)中的各項要求并非旨在限制創(chuàng)新，當(dāng)考察本標(biāo)準(zhǔn)未曾涉及的燃料、材料、設(shè)計或構(gòu)造時，這些替代方案需要被評估是否具備與本標(biāo)準(zhǔn)相當(dāng)?shù)陌踩?、性能水平?/p>

GB/Z 21742-2008便攜式質(zhì)子交換膜燃料電池發(fā)電系統(tǒng)

1 范圍 本指導(dǎo)性技術(shù)文件規(guī)定了便攜式質(zhì)子交換膜燃料電池發(fā)電系統(tǒng)(包括直流型和交流型)的安全防護和結(jié)構(gòu)的基本要求、檢驗項目和檢驗方法、標(biāo)志、包裝、儲運以及給用戶提供的說明文件的有關(guān)要求。本指導(dǎo)性技術(shù)文件適用于交流型和直流型便攜式質(zhì)子交換膜燃料電池發(fā)電系統(tǒng)?？捎糜谏虡I(yè)、工業(yè)及住宅等無危險的室內(nèi)或戶外場所，本指導(dǎo)性技術(shù)文件不適用于道路車輛用燃料電池發(fā)電系統(tǒng)。 本指導(dǎo)性技術(shù)文件適用范圍內(nèi)產(chǎn)品可用的燃料包括：氫氣、天然氣、液化石油氣(如丙烷、丁烷等)、液態(tài)醇類(甲醇、乙醇)、汽油、煤油、柴油、化學(xué)氫化物和金屬(如鋅和鋁)。 類似燃料和除空氣以外的氧化劑，如果與之相關(guān)的特殊危險通過附加措施得到控制，本指導(dǎo)性技術(shù)文件也不排除使用。1.1 系統(tǒng)邊界 本指導(dǎo)性技術(shù)文件規(guī)定的便攜式質(zhì)子交換膜燃料電池發(fā)電系統(tǒng)(以下簡稱“便攜式燃料電池系統(tǒng)”)總體設(shè)計應(yīng)部分或全部地將下列子系統(tǒng)集成為一個整體，用以實現(xiàn)規(guī)定的功能。具體包括： ——燃料處理系統(tǒng)； ——氧化劑處理系統(tǒng)； ——熱管理系統(tǒng)； ——功率調(diào)節(jié)系統(tǒng)； ——自動控制系統(tǒng)； ——燃料電池模塊； ——燃料供應(yīng)系統(tǒng)； ——輔助電源； ——通風(fēng)系統(tǒng)； ——水處理系統(tǒng)。 便攜式質(zhì)子交換膜燃料電池發(fā)電系統(tǒng)的框圖見圖1。1.2等效安全要求 這些要求不排除本部分中沒有明確規(guī)定的設(shè)計和結(jié)構(gòu)，只要這些設(shè)計和結(jié)構(gòu)經(jīng)過了試驗驗證，并列入了便攜式質(zhì)子交換膜燃料電池發(fā)電系統(tǒng)(以下簡稱“便攜式系統(tǒng)”)的文件之內(nèi)。在選擇設(shè)計和結(jié)構(gòu)時，應(yīng)當(dāng)評估所采用的材料和工藝方法，使所選設(shè)計和結(jié)構(gòu)能夠符合本指導(dǎo)性技術(shù)文件規(guī)定的要求。 本指導(dǎo)性技術(shù)文件不包括便攜式系統(tǒng)本身以外的氣態(tài)或液態(tài)燃料容器及其連接構(gòu)件。1.3說明 除另有說明外，本指導(dǎo)性技術(shù)文件中所有的壓力均指表壓。

TB/T 3453.3-2016動車組詞匯 第3部分:部件和系統(tǒng)

本部分界定了動車組各部件和系統(tǒng)用詞匯的術(shù)語、英語對應(yīng)詞和定義。本部分適用于動車組的標(biāo)準(zhǔn)、技術(shù)文件和科技出版物。

CNS 14816-5-1-2016低電壓開關(guān)裝置及控制裝置－第5-1 部：控制電路裝置及開關(guān)操作元件－電機控制電路裝置

本標(biāo)準(zhǔn)適用于開關(guān)裝置及控制裝置中，作為控制、訊號、互鎖等功能用之控制電路裝置及開關(guān)操作元件。本標(biāo)準(zhǔn)適用于額定電壓不超過交流1,000 V (頻率不超過1,000 Hz)或直流600 V之控制電路裝置。然而，關(guān)于使用電壓低于交流100 V或為直流者，參照4.3.1.1之備考2。本標(biāo)準(zhǔn)適用于特定型式之控制電路裝置，舉例如下。－ 人工控制開關(guān)，例：按鈕、旋轉(zhuǎn)開關(guān)、腳踏開關(guān)等。－ 延時式或瞬時式電磁操作控制開關(guān)，例：接點式電驛(contactor relay)。－ 操控開關(guān)(pilot switch)，例：壓力開關(guān)、溫度感應(yīng)開關(guān)(恒溫器)、程式控制器等。－ 位置開關(guān)，例：以機器或機構(gòu)之一部分操作的控制開關(guān)。－ 相關(guān)控制電路設(shè)備，例：指示燈等。備考1. 控制電路裝置包含控制開關(guān)及相關(guān)裝置，例：指示燈。備考2. 控制開關(guān)包含開關(guān)操作元件及致動系統(tǒng)。備考3. 開關(guān)操作元件可為接點元件或半導(dǎo)體元件。本標(biāo)準(zhǔn)亦適用于與其他裝置(其主電路規(guī)定于其他標(biāo)準(zhǔn)中)聯(lián)結(jié)之特定型式的開關(guān)操作元件，舉例如下。－ 開關(guān)操作裝置之輔助接點(例：接點式電驛(contactor)、斷路器(circuit breaker)等)，此輔助接點并非專用于連接該裝置之線圈使用。－ 箱門之互鎖接點。－ 旋轉(zhuǎn)開關(guān)之控制電路接點。－ 過載電驛之控制電路接點。除使用類別應(yīng)符合本標(biāo)準(zhǔn)外，接點式電驛亦應(yīng)符合IEC 60947-4-1之要求及試驗。本標(biāo)準(zhǔn)不包括IEC 60255或IEC 61810系列標(biāo)準(zhǔn)之電驛，亦不包括家用及類似用途之自動電氣控制裝置。指示燈、按鈕等之顏色要求，列于IEC 60073及照明委員會(CIE)之第2號刊物中。

IEC 60730-2-6 AMD 1-2019自動電氣控制器. 第2-6部分: 包括機械要求的自動電氣壓力敏感控制器的特殊要求. 修改件1

Replace the first paragraph of the scope by the following: This part of IEC 60730 applies to automatic electrical pressure sensing controls for use in, on or in association with, equipment. The equipment may use electricity, gas, oil, solid fuel, solar thermal energy, etc. or a combination thereof.

IEC 60730-2-15-2017自動電氣控制器. 第2-15部分: 自動電氣氣流、水流和水位感應(yīng)控制器的特殊要求

Replacement: This part of IEC 60730 applies to automatic electrical air flow, water flow and water level sensing controls for use in, or in association with, boilers with a maximum pressure rating of

IEC 60730-2-17 AMD 2-2007家用及類似用途的自動電氣控制器.第2部分:包括機械要求的電動氣閥用詳細(xì)要求

This standard is Automatic electric controls for household and similar use - Part 2: Particular requirements for electrically operated gas valves, including mechanical requirements; Amendment 2.

IEC 60730-2-17 Edition 1.1-2001家用和類似用途的自動電氣控制.第2-17部分:電控氣閥的特殊要求,包括機械要求

This clause of part 1 is replaced as follows: \nReplacement:\n1 This part 2 applies to electrically operated gas valves for use in, on or in association with, equipment for household and similar use that use electricity, in combination with fuel in the gaseous state such as manufactured gas, natural gas or liquefied petroleum gas intended to be used for gas burning equipment.\nAdditional considerations may be necessary for gas with corrosive properties.\nThis part 2 also applies to electrically operated gas valves using NTC or PTC thermistors, requirements for which are contained in annex J.\n1.1 This part 2 applies to the inherent safety, to the operating values, operating times, and operating sequences where such are associated with equipment safety, and to the testing of electrically operated gas valves used in, or in association with, household or similar equipment.\nThis part 2 is also applicable to controls for appliances within the scope of IEC 335-1.\nThroughout this part 2 the word \"equipment\" means \"appliance and equipment\".\nThis part 2 does not apply to electrically operated gas valves designed exclusively for industrial applications.\nElectrically operated gas valves for equipment not intended for normal household use, but which nevertheless may be used by the public, such as equipment intended to be used by laymen in shops, in light industry and on farms, are within the scope of this part 2.\nThis part 2 identifies a number of mechanical features as \"under consideration.\" Until these mechanical requirements are incorporated in this part 2, each country using this part 2 will have to quantify these requirements.\nCompliance of an electrically operated gas valve with this part 2 does not imply that the valve is acceptable without further tests for these mechanical features.\n1.2 This part 2 applies to manual controls when such are electrically and/or mechanically integral with electrically operated gas valves.\nRequirements for manual switches not forming part of an electrically operated gas valve are contained in IEC 1058-1.\nThis part 2 does not apply to electrically operated gas valves of nominal connection size above DN 150.\nThis part 2 applies to electrically operated gas valves for maximum working pressures up to 400 kPa (4 bar).\nHereinafter, the term \"valve\" is used to denote an electrically operated gas valve (including prime mover and valve body).\n1.3 This part 2 does not apply to electric actuators which are covered by IEC 730-2-14.\n1.4 This part 2 also applies to valves utilized as part of a system, or valves mechanically integral with multifunctional controls.\n1.5 This part 2 does not apply to valves energized by thermoelectric energy generated in a thermocouple or thermopile inserted in a gas flame.\n2 This part 2 applies to valves with a rated voltage not exceeding 660 V and with a rated current not exceeding 63 A.\n3 Is not applicable.\n4 This part 2 applies also to valves incorporating electronic devices, requirements for which are contained in annex H.\n5 Normative references\nThis clause of part 1 is applicable except as follows:\nAddition:\nIEC 335-1: 1991, Safety of household and similar electrical appliances - Part 1: General requirements\nIEC 529: 1989, Degrees of protection provided by enclosures (IP Code)\nIEC 730-2-14: 1995, Automatic electrical controls for household and similar use - Part 2: Particular requirements for electric actuators\nIEC 1058-1: 1990, Switches for appliances - Part 1: General requirements\nISO 7-1: 1994, Pipe threads where pressure-tight joints are made on the threads —Part 1: Dimensions, tolerances and designation\nISO 228-1: 1994, Pipe threads where pressure-tight joints are not made on the threads -Part 1: Dimensions, tolerances and designation\nISO 274: 1975, Copper tubes of circular section - Dimensions ISO 301: 1981, Zinc alloy ingots intended for casting\nISO 4400: 1994, Fluid power systems and components - Three-pin electrical plug connectors with earth

IEC 60730-2-17 Edition 1.2-2007家用和類似用途電自動控制器.第2-17部分:電動煤氣閥門(包括機械要求)的特殊要求

This clause of part I is replaced as follows:Replacement:1.1 This part 2 of IEC 60730 applies to electrically operated gas valves for use in, on or inassociation with, equipment for household and similar use that use electricity, in combinationwith fuel in the gaseous state such as manufactured gas, natural gas or liquefied petroleumgas intended to be used for gas burning equipment.Additional considerations may be necessary for gas with corrosive properties.This part 2 also applies to electrically operated gas valves using NTC or PTC thermistors,requirements for which are contained in annex J.1.1.1 This standard applies to the inherent safety, to the operating values, operating times,and operating sequences where such are associated with equipment safety, and to the testingof electrically operated gas valves used in, or in association with, household or similarequipment, but also extended to industrial purposes when no dedicated product standardexists, such as that for central heating, air conditioning, process heating, etc.This part 2 is also applicable to controls for appliances within the scope of IEC 60335-1.Throughout this part 2 the word \"equipment\" means \"appliance and equipment\".This part 2 does not apply to electrically operated gas valves designed exclusively for industrialapplications.Electrically operated gas valves for equipment not intended for normal household use, butwhich nevertheless may be used by the public, such as equipment intended to be used bylaymen in shops, in light industry and on farms, are within the scope of this part 2.This part 2 identifies a number of mechanical features as \"under consideration\". Until thesemechanical requirements are incorporated in this part 2, each country using this part 2 willhave to quantify these requirements.Compliance of an electrically operated gas valve with this part 2 does not imply that the valve is acceptable withoutfurther tests for these mechanical features.1.1.2 This part 2 applies to manual controls when such are electrically and/or mechanicallyintegral with electrically operated gas valves.Requirements for manual switches not forming part of an electrically operated gas valve are contained inIEC 61058-1.This part 2 does not apply to electrically operated gas valves of nominal connection size aboveDN 150.This part 2 applies to electrically operated gas valves for maximum working pressures upto 400 kPa (4 bar).Hereinafter, the term \"valve\" is used to denote an electrically operated gas valve (incluclJngprime mover and valve body).1.1.3 An electric actuator that is submitted to the testing laboratory in combination with a gasvalve will be evaluated under this part 2. A separate electric actuator is evaluated underlEO 60730-2-14, which provides particular requirements for electric actuators.1.1.4 This part 2 also applies to valves utilJzecl as part of a system, or valves mechanicallyintegral with multifunctional controls.1.1.5 This part 2 does not apply to valves energized by thermoelectric energy generated in athermocouple or thermopile inserted Jn a gas flame.1.3 Is not applicable.

IEC 60730-2-19 AMD 2-2007家用和類似用途自動電氣控制器.第2-19部分:包括機械要求的電動油閥用特殊要求

This standard is Automatic electric controls for household and similar use - Part 2-19: Particular requirements for electrically operated oil valves, including mechanical requirements; Amendment 2.

IEC 60730-2-19 Edition 1.1-2001家用和類似用途的自動電氣控制.第2-19部分:電控油閥的特殊要求,包括機械要求

This clause of part 1 is not applicable.\nReplacement:\n1 This part 2 of IEC 60730 applies to electrically operated oil valves for use in, on or in association with equipment for household and similar use that use electricity, in combination with fuel in the liquid state such as distillates, residual fuels, etc.\nThis part 2 also applies to electrically operated oil valves using NTC or PTC thermistors, requirements for which are contained in annex J.\n1.1 This part 2 applies to the inherent safety, to the operating values, operating times, and operating sequences where such are associated with equipment safety, and to the testing of electrically operated oil valves used in, or in association with, household or similar equipment.\nThis part 2 is also applicable to controls for appliances within the scope of IEC 60335-1.\nThroughout this part 2 the word \"equipment\" means \"appliance and equipment\".\nThis part 2 does not apply to electrically operated oil valves designed exclusively for industrial applications.\nElectrically operated oil valves for equipment not intended for normal household use, but which nevertheless may be used by the public, such as equipment intended to be used by laymen in shops, in light industry and on farms, are within the scope of this part 2.\nThis part 2 identifies a number of mechanical features as \"under consideration\". Until these mechanical requirements are incorporated in this part 2, each country using this part 2 will have to quantify these requirements.\nCompliance of an electrically operated oil valve with this part 2 does not imply that the valve is acceptable without further tests for these mechanical features.\n1.2 This part 2 applies to manual controls when such are electrically and/or mechanically integral with electrically operated oil valves.\nRequirements for manual switches not forming part of an electrically operated oil valve are contained in IEC 61058-1.\nThis part 2 does not apply to electrically operated oil valves of nominal connection size above DN 150.\nHereinafter, the term \"valve\" is used to denote an electrically operated oil valve (including prime mover and valve body).\n1.3 An electric actuator that is submitted to the testing laboratory in combination with an oil valve will be evaluated under this part 2. A separate electric actuator is evaluated under IEC 60730-2-14, which provides particular requirements for electric actuators.\n1.4 This part 2 also applies to valves utilized as part of a system, or valves mechanically integral with multifunctional controls.\n1.5 Normative references\nThis clause of part 1 is applicable except as follows: Addition:\nIEC 60335-1:1991, Safety of household and similar electrical appliances - Part 1: General requirements\nIEC 60529:1989, Degrees of protection provided by enclosures (IP Code)\nIEC 60730-2-14:1995, Automatic electrical controls for household and similar use - Part 2: Particular requirements for electric actuators\nIEC 61058-1:1990, Switches for appliances - Part 1: General requirements\nISO 7-1:1994, Pipe threads where pressure-tight joints are made on the threads - Part 1: Dimensions, tolerances and designation\nISO 228-1:1994, Pipe threads where pressure-tight joints are not made on the threads - Part 1: Dimensions, tolerances and designation\nISO 274:1975, Copper tubes of circular section - Dimensions ISO 301:1981, Zinc alloy ingots intended for casting\nISO 4400:1994, Fluid power systems and components - Three-pin electrical plug connectors with earth contact - Characteristics and requirements\nISO 6952:1994, Fluid power systems and components - Two-pin electrical plug connectors with earth contact - Characteristics and requirements\nISO 7005-1:1992, Metallic flanges - Part 1: Steel flanges ISO 7005-2:1988, Metallic flanges - Part 2: Cast iron flanges

IEC 60730-2-19 Edition 1.2-2007家用和類似用途自動電氣控制裝置.第2-19部分:電動油閥(包括機械要求)的特殊要求

1.1 This part 2 of IEC 60730 applies to electrically operated oil valves for use in, on or inassociation with equipment for household and similar use that use electricity, in combinationwith fuel in the liquid state such as distillates, residual fuels, etc.This part 2 also applies to electrically operated oil valves using NTC or PTC thermistors,requirements for which are contained in annex J.1.1.1 This standard applies to the inherent safety, to the operating values, operating times,and operating sequences where such are associated with equipment safety, and to the testingof electrically operated oil valves used in, or in association with, household or similarequipment, but also extended to industrial purposes where no dedicated product standardexists, such as that for central heating, air conditioning, process heating, etc.This part 2 is also applicable to controls for appliances within the scope of IEC 60335-1.Throughout this part 2 the word \"equipment\" means \"appliance and equipment\".This part 2 does not apply to electrically operated oil valves designed exclusively for industrialapplications.Electrically operated oil valves for equipment not intended for normal household use, but whichnevertheless may be used by the public, such as equipment intended to be used by laymen inshops, in light industry and on farms, are within the scope of this part 2.This part 2 identifies a number of mechanical features as \"under consideration\". Until thesemechanical requirements are incorporated in this part 2, each country using this part 2 willhave to quantify these requirements.Compliance of an electrically operated oil valve with this part 2 does not imply that the valve is acceptable withoutfurther tests for these mechanical features.1.1.2 This part 2 applies to manual controls when such are electrically and/or mechanicallyintegral with electrically operated oil valves.Requirements for manual switches not forming part of an electrically operated oil valve are contained inIEC 61058-1.This part 2 does not apply to electrically operated oil valves of nominal connection size aboveDN 150.Hereinafter, the term \"valve\" is used to denote an electrically operated oil valve (includingprime mover and valve body).1.1.3 An electric actuator that is submitted to the testing laboratory in combination with an oilvalve will be evaluated under this part 2. A separate electric actuator is evaluated underIEC 60730-2-14, which provides particular requirements for electric actuators.1.1.4 This part 2 also applies to valves utilized as part of a system, or valves mechanicallyintegral with multifunctional controls.

UL 150-2004天線旋轉(zhuǎn)器

1.1 These requirements cover antenna rotators intended for household and commercial use on supplycircuits in accordance with the National Electrical Code, NFPA 70.1.2 An antenna rotator generally consists of:a) A mast-mounted (generally outdoors), motorized drive unit that rotates the antenna to thedesired receiving azimuth,b) An indoor-located (usually near television- or radio-receiving equipment) user-operatedcontrol unit that delivers operating power and direction signals to the drive unit, and,c) A length of multiple-conductor Class-2 circuit cable to electrically interconnect the drive unitand the control unit. Some antenna rotating units may control antenna elevation separately or in addition to azimuth. In some cases, the drive unit may be located indoors.1.3 The power used to drive the motor of an antenna rotator is derived from a circuit complying with Class 2 limitations in accordance with Article 725 of the National Electrical Code, ANSI/NFPA 70.1.4 These requirements do not cover systems that use a stationary antenna and change or rotate thereceiving pattern by electronic or switching means. Such systems are covered by the Standard forAudio-Video Products and Accessories, UL 1492.

UL 174-2004家用電蓄水熱水器

The following changes in requirements are being proposed: 1. Revised Label Requirements for Household Storage Tank Water Heater when Connected to a Supplemental Heat Source.