◎ 全隔離三相交流調(diào)壓模塊（ MGR-ST ）
FULL ISOLATION THREE PHASE AC VOLTAGE REGULATOR MODULE（MGR-ST）
◆ 全隔離三相交流調(diào)壓模塊 ( 以下簡(jiǎn)稱三相調(diào)壓模塊MGR-ST) 內(nèi)部集三相電相位檢測(cè) , 移相電路 , 觸發(fā)電路和三組反并聯(lián)單向可控硅于一體 , 在我公司提供的三相同步變壓器模塊 ( 型號(hào)為 TB-3) 的支持下 ( 同步變壓器還兼作提供三相調(diào)壓模塊內(nèi)部工作電源用 ), 不需外部任何電路和工作電源 , 便可自動(dòng)控制或外接電位器手動(dòng)控制 , 達(dá)到改變可控硅導(dǎo)通角即可實(shí)現(xiàn)三相負(fù)載電壓從0V 到電網(wǎng)全電壓的無級(jí)可調(diào)。
◆ 三相調(diào)壓模塊 MGR-ST 原則上應(yīng)用于 380VAC,50Hz 的三相電網(wǎng)上 , 根據(jù)控制信號(hào)的不同分 E, F, G, H型等四類 , 以下為型號(hào)表。
（注：以上電流等級(jí)為模塊內(nèi)部一組反并聯(lián)可控硅電流最大有效值）
◆ The full isolation three phase AC voltage regulator module (hereinafter referred to as the three phase voltage regulator module MGR- ST) integrates the three phase phase-detection circuit, the phase-shift circuit, the trigger circuit and three sets of reverse-parallel SCR thyristors. With the support of the three phase synchronous transformer module (TB-3) provided by our company (the synchronous transformer also serves as the internal operation power supply for the three phase voltage regulator module) and no requirement for the external circuit or power supply, the conduction angle of thyristors can be changed by the automatic control method or manual control method (i.e. the external potentiometer), which means the voltage amplitude of the three phase load can be continuously adjusted from 0V to the maximum voltage of the power grid.
◆ The three phase voltage regulator module MGR- ST should be applied to the 380VAC, 50Hz three phase power grid. According to the different control signals, MGR-ST can be divided into four types: E, F, G, and H types. The following is the specification model table.
（注：以上電流等級(jí)為模塊內(nèi)部一組反并聯(lián)可控硅電流最大有效值）
(Note: The current grade in this table is the maximum rms current of one set of the reverse-parallel SCR thyristors)
◆ 為方便說明，下面以0-5V控制信號(hào)為標(biāo)準(zhǔn)作介紹（型號(hào)簡(jiǎn)稱 MGR-ST）。
◆ For convenience of explanation, the following introduces with the 0~5V control signal as a standard (Model: MGR-ST)
◆ 三相調(diào)壓模塊 R, S, T 和同步變壓器模塊上 R, S, T 接電網(wǎng) L1, L2, L3( 無相序要求 , 但兩模塊的 R, S, T 應(yīng)對(duì)應(yīng)連接 ), 同步變壓器 N 接地線 . U, V, W 接三相負(fù)載(Y, △接法均可 ). 三相調(diào)壓模塊上 r1, r2, s1, s2, t1, t2和同步變壓器模塊上r1, r2, s1, s2, t1, t2用排線連接(插上線插口即可 ), +5V 端為內(nèi)部產(chǎn)生 , 只供電位器手動(dòng)控制用 , CON 為控制端 , COM 為模塊內(nèi)部地 . 其中 T, S,R, N, U, W 的強(qiáng)電部分與 r1, r2, s1, s2, t1, t2, +5V,CON, COM 的弱電部分為全隔離 . 應(yīng)用電路及手動(dòng)控制。
◆ The R, S, T ports of the MGR-ST module and the R, S, T ports of the TB-3 module should be connected to the L1, L2, L3 ports of the power grid (no phase sequence requirement, but the R, S, T ports of these two modules should be connected one-to-one), and the N line of the synchronous transformer module should be grounded. And U, V, W ports should be connected to three phase load (Y or △ connection are all available). The r1, r2, s1, s2, t1, t2 ports of MGR- ST module and the r1, r2, s1, s2, t1, t2 ports of the TB-3 module are connected through terminal strips (plugged together to connect directly). COM port is the internal common ground terminal, CON port is the control terminal, and the +5V port is the power supply generated inside the module only for the manual control of potentiometer. And the strong current part (T, S, R, N, U, W ports) and the weak current part (r1, r2, s1, s2, t1, t2, +5V, CON, COM ports) are fully isolated, and these two parts should be controlled by the automatic control method or manual control method.
◎ 有關(guān)技術(shù)指標(biāo)及應(yīng)注意的問題
Related technical specifications and precautions
1、 三相調(diào)壓模塊和三相同步變壓器模塊 TB-3 組成的電路可應(yīng)用于380VAC (300~420VAC), 50Hz的電網(wǎng)上。
2、CON 對(duì) COM 必須為正 , 如極性相反則輸出端失控( 全開或全閉 ). 當(dāng)控制端 CON 從 0~5V 改變時(shí) , 交流負(fù)載上的電壓從0V到最大值可調(diào)(對(duì)阻性負(fù)載而言).其中 CON 在 0~0.8V 左右時(shí)為全關(guān)閉區(qū)域 , 能可靠關(guān)斷模塊的輸出 ; CON 在 0.8V~4.6V 左右為可調(diào)區(qū)域 , 即隨著控制電壓的增大 , 導(dǎo)通角 α 從 180°到 0°線性減小 , 交流負(fù)載上的電壓從 0V 增大到最大值 ; CON 在4.6V~5V 左右時(shí)為全開通區(qū)域 , 交流負(fù)載上的電壓為最大值 ( 接近電網(wǎng)電壓 )。
3、 CON 對(duì) COM 的輸入阻抗分 E, F 和 H 型均為大于等于 30KΩ; G 型為 250Ω. +5V 電壓信號(hào)只提供給手控電位器用 , 不做他用 , 所選用的電位器阻值在2~10KΩ 間 , 注 : 4~20mA 的 G 型不能用電位器手動(dòng)調(diào)節(jié) , 此時(shí) +5V 端也沒有用處。
4、強(qiáng)電部分 , 弱電部分 , 模塊底板相互間絕緣電壓均大于 2000VAC.。
5、整個(gè)模塊的發(fā)熱量按負(fù)載實(shí)際電流安倍數(shù)乘 1.5 瓦 /安倍計(jì)算 , 散熱器可選用 MG-Y, MG-H 系列。
6、三相負(fù)載的三相功率應(yīng)均衡 . 負(fù)載為 Y 形接法時(shí) , Y的中心點(diǎn)接與不接中性線均可 , 但接中性線時(shí)高次諧波對(duì)電網(wǎng)干擾要比不接中性線時(shí)大。
7、三相交流異步電機(jī)的調(diào)速應(yīng)采用變頻器，只有風(fēng)機(jī)類、水泵類電機(jī)在要求不高的場(chǎng)合可采用三相調(diào)壓模塊。
8、三相同步變壓器模塊 TB-3 上的 N 須可靠接地。TB-3 與三相調(diào)壓模塊配套出售。
9、三相交流調(diào)壓建議優(yōu)先采用下面部分介紹的 SSR-3JK 和三只隨機(jī)型固態(tài)繼電器所組成的調(diào)壓系統(tǒng)。
10、有關(guān)電流等級(jí)的選取及保護(hù)等有關(guān)使用注意事項(xiàng)請(qǐng)
參考單相交流固態(tài)繼電器。
1、The circuit consisting of three phase voltage regulator module and three phase synchronous transformer module TB-3 can be applied to 380VAC (300~420VAC), 50Hz power grid.
2、CON must be positive relative to COM, and if the polarity is opposite, the output terminal will be out of control (fully open or fully closed). When the control terminal CON changes from 0V to 5V, the voltage on the AC load can be adjusted from 0V to the maximum value (for resistive loads). When the control voltage on CON is around 0V~0.8V (Fully- closed Region), the control signal can reliably shut down the output of the module. When the control voltage on CON is around 0.8V~4.6V (Adjustable Region), the conduction angle α decreases linearly from 180° to 0° as the control voltage increases, and the voltage on the AC load increases from 0V to the maximum value. When the control voltage on CON is around 4.6V~5V (Full-open Region), the voltage on the AC load is the maximum value (close to the power grid voltage).
3、The input impedance between CON and COM is divided into E, F and H type (the impedance of these three types are greater than or equal to 30KΩ), and G type (the impedance is 250Ω). The +5V voltage signal is only provided for the manual potentiometer (the selected resistance is between 2~10KΩ), not for other uses. Note: The G type (4~20mA as control signal) cannot be manually adjusted by the potentiometer, so the +5V port is useless for the G type.
4、The insulation voltage between the strong current part, the weak current part, and the module backplane is greater than 2000VAC.
