◎ 全隔离三相交流调压模块（ MGR-ST ）
FULL ISOLATION THREE PHASE AC VOLTAGE REGULATOR MODULE（MGR-ST）
◆ 全隔离三相交流调压模块 ( 以下简称三相调压模块MGR-ST) 内部集三相电相位检测 , 移相电路 , 触发电路和三组反并联单向可控硅于一体 , 在我公司提供的三相同步变压器模块 ( 型号为 TB-3) 的支持下 ( 同步变压器还兼作提供三相调压模块内部工作电源用 ), 不需外部任何电路和工作电源 , 便可自动控制或外接电位器手动控制 , 达到改变可控硅导通角即可实现三相负载电压从0V 到电网全电压的无级可调。
◆ 三相调压模块 MGR-ST 原则上应用于 380VAC,50Hz 的三相电网上 , 根据控制信号的不同分 E, F, G, H型等四类 , 以下为型号表。
（注：以上电流等级为模块内部一组反并联可控硅电流最大有效值）
◆ 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：以上电流等级为模块内部一组反并联可控硅电流最大有效值）
(Note: The current grade in this table is the maximum rms current of one set of the reverse-parallel SCR thyristors)
◆ 为方便说明，下面以0-5V控制信号为标准作介绍（型号简称 MGR-ST）。
◆ For convenience of explanation, the following introduces with the 0~5V control signal as a standard (Model: MGR-ST)
◆ 三相调压模块 R, S, T 和同步变压器模块上 R, S, T 接电网 L1, L2, L3( 无相序要求 , 但两模块的 R, S, T 应对应连接 ), 同步变压器 N 接地线 . U, V, W 接三相负载(Y, △接法均可 ). 三相调压模块上 r1, r2, s1, s2, t1, t2和同步变压器模块上r1, r2, s1, s2, t1, t2用排线连接(插上线插口即可 ), +5V 端为内部产生 , 只供电位器手动控制用 , CON 为控制端 , COM 为模块内部地 . 其中 T, S,R, N, U, W 的强电部分与 r1, r2, s1, s2, t1, t2, +5V,CON, COM 的弱电部分为全隔离 . 应用电路及手动控制。
◆ 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.
◎ 有关技术指标及应注意的问题
Related technical specifications and precautions
1、 三相调压模块和三相同步变压器模块 TB-3 组成的电路可应用于380VAC (300~420VAC), 50Hz的电网上。
2、CON 对 COM 必须为正 , 如极性相反则输出端失控( 全开或全闭 ). 当控制端 CON 从 0~5V 改变时 , 交流负载上的电压从0V到最大值可调(对阻性负载而言).其中 CON 在 0~0.8V 左右时为全关闭区域 , 能可靠关断模块的输出 ; CON 在 0.8V~4.6V 左右为可调区域 , 即随着控制电压的增大 , 导通角 α 从 180°到 0°线性减小 , 交流负载上的电压从 0V 增大到最大值 ; CON 在4.6V~5V 左右时为全开通区域 , 交流负载上的电压为最大值 ( 接近电网电压 )。
3、 CON 对 COM 的输入阻抗分 E, F 和 H 型均为大于等于 30KΩ; G 型为 250Ω. +5V 电压信号只提供给手控电位器用 , 不做他用 , 所选用的电位器阻值在2~10KΩ 间 , 注 : 4~20mA 的 G 型不能用电位器手动调节 , 此时 +5V 端也没有用处。
4、强电部分 , 弱电部分 , 模块底板相互间绝缘电压均大于 2000VAC.。
5、整个模块的发热量按负载实际电流安倍数乘 1.5 瓦 /安倍计算 , 散热器可选用 MG-Y, MG-H 系列。
6、三相负载的三相功率应均衡 . 负载为 Y 形接法时 , Y的中心点接与不接中性线均可 , 但接中性线时高次谐波对电网干扰要比不接中性线时大。
7、三相交流异步电机的调速应采用变频器，只有风机类、水泵类电机在要求不高的场合可采用三相调压模块。
8、三相同步变压器模块 TB-3 上的 N 须可靠接地。TB-3 与三相调压模块配套出售。
9、三相交流调压建议优先采用下面部分介绍的 SSR-3JK 和三只随机型固态继电器所组成的调压系统。
10、有关电流等级的选取及保护等有关使用注意事项请
参考单相交流固态继电器。
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.
