礦用一般型干式變壓器符合國家標(biāo)準(zhǔn)：GB/T 12173-2008

The general dry type transformer for mining meets the national standard: GB/T 12173-2008

一、技術(shù)參數(shù)

（1）額定電壓（KV）：高壓：10.5kV、低壓：0.4KV

（2）系統(tǒng)最高運(yùn)行電壓：高壓10KV   

（3）額定頻率（HZ）：50

（4）相數(shù)：三相

（5）冷卻方式：ANAF  

（6）聯(lián)接組標(biāo)號(hào)：Y，d11

（7）變壓器外殼為不銹鋼外殼，外殼外部明顯處有“高壓危險(xiǎn)，請(qǐng)勿接近”“嚴(yán)禁帶電開蓋”等安全警示語，外殼能承受7J的外作用力，不損壞。

（8）外殼的爬電距離及電氣間隙：符合GB3836.3-2010第4.3條的規(guī)定。

（9）防護(hù)等級(jí)：IP54

1. Technical parameters

(1) Rated voltage (KV) : High voltage: 10.5kV, low voltage: 0.4KV

(2) The maximum operating voltage of the system: high voltage 10KV

(3) Rated frequency (HZ) : 50

(4) Number of phases: three phases

(5) Cooling method: ANAF

(6) Connection group label: Y, d11

(7) The transformer shell is a stainless steel shell, and there are obvious safety warnings such as "high voltage danger, do not approach" and "no live open cover" on the outside of the shell. The shell can withstand the external force of 7J and is not damaged.

(8) The creepage distance and electrical gap of the shell: in accordance with the provisions of GB3836.3-2010 Article 4.3.

(9) Protection level: IP54

二、技術(shù)特點(diǎn)

（1）干式變壓器繞組采用樹脂澆注式結(jié)構(gòu)，選用高導(dǎo)電率的銅導(dǎo)線，高壓繞組為分段層式線圈，低壓繞組為薄式線圈。具有良好的絕緣結(jié)構(gòu)，設(shè)有軸向風(fēng)道，散熱性良好，保證在封閉的變壓器柜內(nèi)全容量運(yùn)行時(shí)，各部位溫升滿足國家相關(guān)標(biāo)準(zhǔn)。變壓器不會(huì)因溫度的變化在壽命期限內(nèi)導(dǎo)致線圈表面龜裂。

（2）噪音水平：根據(jù)國家標(biāo)準(zhǔn)GBT 50087-2013 ,變壓器本體聲壓級(jí)測定小于60分貝。

（3）變壓器風(fēng)扇的配置和布置應(yīng)合理，風(fēng)扇手動(dòng)及自動(dòng)控制，并可通過操作開關(guān)實(shí)現(xiàn)不同運(yùn)行狀態(tài)。散熱風(fēng)扇采用幕簾式通風(fēng)機(jī)，當(dāng)強(qiáng)迫風(fēng)冷時(shí)，可提高變壓器容量，且各部位溫升仍能滿足國家相關(guān)標(biāo)準(zhǔn)。

（4）變壓器為三相、雙線圈、銅導(dǎo)線、無載調(diào)壓、樹脂澆注式、空氣自冷加風(fēng)冷；

（5）受安裝場地限制，在變壓器安裝時(shí)，可方便拆卸外殼；

（6）相同規(guī)格的干式變壓器，機(jī)械部件可以互換；

（7）變壓器不銹鋼防護(hù)外殼厚度2mm，外殼防護(hù)等級(jí)IP54，外殼上裝有牢固加強(qiáng)筋板，具有一定的抗爆破氣流沖擊能力；柜門帶閉鎖和報(bào)警裝置，外殼可開啟位置提供明顯安全警示標(biāo)識(shí)，可拆卸。殼體有滿足散熱要求的通風(fēng)口，通風(fēng)口具有濾塵、防水、阻燃、抗老化等特性。外殼外部設(shè)有觀察窗，方便觀察設(shè)備運(yùn)行時(shí)的工作狀態(tài)。

（8）壽命年限：在正常運(yùn)行和維護(hù)條件下30年；

（9）變壓器內(nèi)所有材質(zhì)都具有阻燃性，不自燃，不產(chǎn)生有害氣體；

（10）變壓器設(shè)置智能接口的溫控系統(tǒng)，用于自動(dòng)監(jiān)測并巡回顯示三相最熱點(diǎn)溫度、控制風(fēng)機(jī)啟停，超溫報(bào)警及斷路器跳閘。變壓器正常運(yùn)行的冷卻方式為自然風(fēng)冷，但提供冷卻風(fēng)扇滿足強(qiáng)迫風(fēng)冷條件下115%的過負(fù)荷要求。

2. Technical characteristics

(1) The dry transformer winding adopts the resin cast structure, the selection of high conductivity copper wire, the high voltage winding is the segmented layer coil, and the low voltage winding is the thin coil. It has good insulation structure, axial air duct, good heat dissipation, and ensures that the temperature rise of each part meets the relevant national standards when the full capacity is operated in the closed transformer cabinet. The transformer will not cause the coil surface to crack due to temperature changes during its life.

(2) Noise level: According to the national standard GBT 50087-2013, the sound pressure level of the transformer body is determined to be less than 60 dB.

(3) The configuration and layout of the transformer fan should be reasonable, the fan can be manually and automatically controlled, and different operating states can be achieved by operating the switch. The cooling fan adopts curtain fan, which can improve the transformer capacity when forced air cooling, and the temperature rise of each part can still meet the relevant national standards.

(4) The transformer is three-phase, double coil, copper wire, no-load voltage regulation, resin pouring type, air self-cooling and air cooling;

(5) Limited by the installation site, the shell can be easily removed when the transformer is installed;

(6) The same specifications of dry transformers, mechanical parts can be interchangeable;

(7) The thickness of the transformer stainless steel protective shell is 2mm, the protection grade of the shell is IP54, and the shell is equipped with a firm reinforcement plate, which has a certain ability to resist the impact of blasting air; Cabinet door with locking and alarm device, shell can be opened to provide obvious safety warning signs, removable. The shell has a vent to meet the heat dissipation requirements, and the vent has the characteristics of dust filter, waterproof, flame retardant, anti-aging and so on. The outer shell is provided with an observation window, which is convenient to observe the working state of the equipment during operation.

(8) Life span: 30 years under normal operation and maintenance conditions;

(9) All materials in the transformer are flame retardant, no spontaneous combustion, no harmful gases;

(10) The temperature control system of the transformer is set up with an intelligent interface, which is used to automatically monitor and display the three-phase hot spot temperature, control the fan start and stop, overtemperature alarm and circuit breaker trip. The cooling method for normal operation of the transformer is natural air cooling, but the cooling fan is provided to meet the overload requirement of 115% under forced air cooling conditions.