希曼顿固态继电器+SSR

e-mail:**************User’s GuideSSRL240/SSRL660 SERIESSolid State RelaysShop online atIt is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that apply. OMEGA is constantly pursuing certification of its products to the European New Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification.The information contained in this document is believed to be correct, but OMEGA Engineering, Inc. acceptsno liability for any errors it contains, and reserves the right to alter specifications without notice.WARNING: These products are not designed for use in, and should not be used for, patient-connected applications.PRECAUTIONSA number of essential safety precautions must be observed in the installation and use of a Solid State Relay (SSR).The SSRs should be installed and serviced by qualified technicians familiar with high voltage and current circuits. Note that an SSR has a small leakage current when the contacts are “open”. Normal failure condition is contacts “closed”. A special Fast Blowing I2T fuse and a mechanical interrupt switch are recommended in the load circuit. In certain applications a mechanical interrupt switch should be installed in the control circuit.GENERAL DESCRIPTIONThe Omega®Solid State Relays (SSR’s) are a series of single-pole, normally open, solid state switching devices with no moving parts, capable of tens of millions of cycles of operation. It is designed to control 120V, 240V or 480V (up to 660V) alternating current (VAC), and provides zero voltage switching and 2500VAC isolation between the load terminals and the control signal. A control signal (AC or DC input, depending on unit selected) causes the SSR to switch the ac load ON or OFF just as a conventional mechanical contact switch does but with none of the problems associated with moving contact relays, such as corrosion, pitting, arcing, radio frequency interference (RFI) and bounce. The result: much longer life for the SSR.The SSR is designed around a pair of SCR’s mounted on a heat-spreading metal base to eliminate thermal fatigue failures. To dissipate the heat developed naturally in an SSR due to a nominal voltage drop across the device, the SSR must be mounted on a Finned Heat Sink (FHS), or on a metal plate of adequate size (see Section 4). It is advisable to install an SSR where the ambient temperature is relatively low because its current-switching rating is decreased as its temperature increases.Control resistance heaters up to 40 kW use solid state relays in conjunction with lower-rated temperature controllers. Three-phase loads can be controlled using 2 or 3 SSR’s. Use 3 SSR’s for Y-phase loads using a neutral line. Three solid state relays are also used when there is no neutral load to provide redundancy and extra assurance of control. Two SSRs will control “delta” loads with no neutral line.1FINNED HEAT SINKS (FHS)The Finned Heat Sinks (FHS) are anodized, aluminum fabrications which come complete with tapped mounting holes, and screws to mount the SSR.FHS-1 and FHS-2 Heat SinkFHS-1 - FHS-2 Heat SinkFHS-6 Heat Sink (0.7°C/W Thermal Rating)FHS-6 Heat Sink2FUSE PROTECTIONThe load side of the SSR should be protected by a Fast-Blowing I 2T fuse.Recommended fuses and part numbers are given in below. Although asemiconductor relay is designed for virtually countless operation cycles, it can be destroyed by an over-voltage or a short circuit, unless protected adequately by the fast fuse.Table 3-1 shows the part numbers of the fuses and fuse blocks that can be used with each of the SSRs. Lower rated fast-blow fuses should be used if the current being controlled is below the rated capacity of the SSR. Bussman or equivalent fuses should be used. It is essential that a proper fast-blow (I 2T)fuse is used. SSR’s normal failure mode on overloaded circuits is closed contacts (ON-STATE).LEAKAGE CURRENTIn the OFF state, all SSRs have a small leakage current through their contacts,typically .1mA for 240V versions and .25mA for 660V versions. As a result, a voltage potential will always exist on the LOAD SIDE, even when the “contacts”are “open”. The voltage level is a function of the load resistance. In accordance with E = IR, the voltage level equals leakage current times load resistance.The voltage level will rise to FULL LINE VOLTAGE under NO LOAD (open circuit) or high resistance conditions. Under normal operating conditions,however, it is very small. A 120-Watt (W) load has a resistance of 1 ohm. With “open contacts”, a leakage current of 15mA will cause 15mV across the load (E = 15 mA ×1 ohm). A mechanical switch is recommended between the AC power source and the SSR to provide electric isolation for servicing the load.SSR Part Maximum Fuse Part Fuse Block Number Current Capacity Number Part NumberSSRL240AC1010 Amps ac KAX-10FB-1, FB-2, FB-3SSRL240AC2525 Amps ac KAX-25FB-1, FB-2, FB-3SSRL240AC50 50 Amps ac KAX-50 BS101SSRL240AC7575 Amps ac KAX-70BS101SSRL240AC100100 Amps ac KAX-100BS101SSRL240DC1010 Amps ac KAX-10FB-1, FB-2, FB-3SSRL240DC2525 Amps ac KAX-25FB-1, FB-2, FB-3SSRL240DC50 50 Amps ac KAX-50 BS101SSRL240DC7575 Amps ac KAX-70BS101SSRL240DC100100 Amps ac KAX-100BS101SSRL660AC5050 Amps ac KAX-50BS101SSRL660AC7575 Amps ac KAX-70BS101SSRL660AC100100 Amps ac KAX-100BS101SSRL660DC5050 Amps ac KAX-50BS101SSRL660DC7575 Amps ac KAX-70BS101SSRL660DC100100 Amps ac KAX-100BS1013O u t p u t -a c L o a dM a x . O f f -S t a t e L e a k a g e N o m i n a l a c L i n eN o m i n a l L o a d M a x . C o n t a c t (25°C m a x . a m b i e n t )M a x F o r w a r d M o d e l N o .V o l t a g eC u r r e n t V o l t a g eD r o p120V a c 240V a c 660V a c V o l t a g e D r o p S S R L 240A C 1010 A 0.1 m A 0.1 m A 1.35S S R L 240A C 2525 A 0.1 m A 0.1 m A 1.35S S R L 240A C 5024 t o 280V a c50 A 1.6V0.1 m A 0.1 m A N /A 1.35S S R L 240A C 7575 A 0.1 m A 0.1 m A 1.3S S R L 240A C 100100 A 0.1 m A 0.1 m A 1.3S S R L 240D C 1010 A 0.1 m A 0.1 m A 1.35S S R L 240D C 2525 A 0.1 m A 0.1 m A 1.35S S R L 240D C 5024 t o 280V a c50 A 1.6V0.1 m A 0.1 m A N /A 1.35S S R L 240D C 7575 A 0.1 m A 0.1 m A 1.3S S R L 240D C 100100 A 0.1 m A 0.1 m A 1.3S S R L 660A C 5050 A 0.25 m A 0.25 m A 0.25 m A 1.35S S R L 660A C 7548 t o 660V a c75 A 1.6V0.25 m A 0.25 m A 0.25 m A 1.3S S R L 660A C 100100 A 0.25 m A 0.25 m A 0.25 m A 1.3S S R L 660D C 5050 A 0.25 m A 0.25 m A 0.25 m A 1.35S S R L 660D C 7548 t o 660V a c75 A 1.6V0.25 m A 0.25 m A 0.25 m A 1.3S S R L 660D C 100100 A 0.25 m A 0.25 m A 0.25 m A 1.3E L E C T R I C A L S P E C IF I C A T I O N S4I n p u t -C o n t r o l S i g n a l C o n t r o l S i g n a l C o n t r o l S i g n a l C o n t r o l S i g n a l M a x I n p u t P e a k V o l t a g e *M o d e l N o .T y p eV o l t a g e T u r n -O n T u r n -O f f C u r r e n t (60 s e c . m a x )S S R L 240A C 10S S R L 240A C 25S S R L 240A C 50A C C o n t r o l S i g n a l90 t o 280V A C 90V A C 10V A C10m A 800VS S R L 240A C 75S S R L 240A C 100S S R L 240D C 10S S R L 240D C 25S S R L 240D C 50D C C o n t r o l S i g n a l 3 t o 32V D C 3V D C 1V D C 14m A 800VS S R L 240D C 75S S R L 240D C 90S S R L 660A C 50S S R L 660A C 75A C C o n t r o l S i g n a l90 t o 280V A C 90V A C 10V A C10m A1200VS S R L 660A C 100S S R L 660D C 50S S R L 660D C 75D C C o n t r o l S i g n a l4 t o 32V D C 4V D C1V D C14m A1200VS S R L 660D C 100E L E C T R I C A L S P E C IF I C A T I O N S *T r a n s i e n t s a b o v e t a b l e v a l u e s h o u l d b e s u p p r e s s e d .5The following SSRs are available from OMEGA Engineering.MOUNTING THE SSRThe SSR assembly (including heat sink) can be located close to the load,minimizing the lengths of power cables. The actuating device, such as atemperature controller, can then be located in an area more convenient to the operator.The FHS on which the SSR is to be mounted has been pre-drilled and tapped, and is supplied with mounting screws. The SSR is supplied with a thermallyconducting pad (attached). Mount the SSR securely to the heat sink with the mounting screws.The best location for the SSR is an open area with unrestricted air movement.The FHS should be mounted on a vertical surface with the fins vertical. If it is mounted with the fins horizontal, or on a horizontal surface, the thermalcoefficient must be re-dated by 20%. For air flow, allow at least 1⁄2in. clearance at each end and 1 in. on the sides.67OUTPUTSSR Dimensions (inches)SPECIFICATIONSGENERAL SPECIFICATIONS(1)PARAMETER ALL DEVICESOperating Temperature Range–20°to +80°CStorage Temperature Range–40°to +80°CInput to Output Isolation Voltage(2)4000 V rmsInput/Output to Ground Isolation Voltage2500 V rmsCapacitance Input to Output (Max)8 pFLine Frequency Range47 to 63 HzINPUT SPECIFICATIONS(1)PARAMETER SSRs DC SSRsControl Voltage90–280 VAC3–32 VDC (4)Drop Out Voltage10 Vrms 1.0 VDCMaximum Input Current(3)10 mA rms14 mADCTurn-On Time20 ms0.5 Cycle Max.(5)Turn-Off Time30 ms0.5 Cycle Max.Nominal Input Impedance Current RegulatedOUTPUT SPECIFICATIONS(1)PARAMETER SSRs UNITSMaximum On-State Current(6)10255075100Arms Minimum On-State Current5050100100100mArms Maximum 1-Cycle Surge(7)15030075010001200Apeak Maximum 1-Second Surge(8)3075150225300Apeak On-State Voltage Drop(9) 1.35 1.35 1.3 1.3 1.3Vpeak I2T (60 Hz)416937245850006000A2secFOOTNOTES(1)Specifications apply to T A–30 to +80°C unless otherwise noted.(2)At T A of 25°C for one second, maximum leakage 1 mA.(3)At maximum input voltage.(4)660V versions 4-32VDC(5)Zero cross over firing.(6)With relay properly mounted on an adequate heatsink.(7)At T A of 25°C, non-repetitive.(8)At T A of 25°C.(9)At T A of 25°C and maximum on-state current.8WARRANTY/DISCLAIMEROMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase. 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固态继电器的技术参数及选用固态继电器（Solid State Relay，简称SSR）是一种采用半导体器件作为开关元件的继电器。

相比传统的电磁继电器，固态继电器具有体积小、寿命长、响应速度快、可靠性高等优点，被广泛应用于自动控制系统中。

在选用固态继电器时，需要关注以下技术参数。

1. 额定负载电流（Rated Load Current）：固态继电器的额定负载电流是指其能够承受的最大工作电流。

在选用时，应根据实际负载电流来选择合适的额定负载电流。

一般来说，选择的额定负载电流应大于实际负载电流的1.2-1.5倍，以确保稳定可靠的工作。

2. 额定负载电压（Rated Load Voltage）：固态继电器的额定负载电压是指其能够承受的最大工作电压。

与额定负载电流类似，选用时应根据实际负载电压来选择合适的额定负载电压。

同样，应保证选用的固态继电器的额定负载电压大于实际负载电压的1.2-1.5倍。

3. 控制电流（Control Current）：固态继电器的控制电流是指它需要的最小触发电流。

在控制端供电时，电流应大于该值才能确保固态继电器的正常工作。

常见的控制电流有3-30mA等。

在选择固态继电器时应尽量选择控制电流较小的型号，以减少控制端功耗。

4. 继电器类型（Type）：固态继电器可以分为直流继电器和交流继电器两种。

直流继电器适用于直流负载，交流继电器适用于交流负载。

在选用时需要根据实际应用情况选择。

5. 隔离电压（Isolation Voltage）：隔离电压是指固态继电器输入和输出之间的耐压值，也被称为绝缘电压。

在选择时，隔离电压应大于应用场景的绝缘要求，以确保系统的安全性。

1.负载类型：不同的负载类型对固态继电器的影响不同。

例如，电容性负载对继电器的寿命有较大的损害，而电感性负载则可能引起电压峰值和电流峰值，需要根据负载类型选择适用的固态继电器。

2.工作环境：固态继电器应能适应应用环境的温度、湿度、振动等要求。

ssr 固态调压原理
SSR固态调压原理。

固态继电器（Solid State Relay，SSR）是一种无触点的电子
开关设备，它利用固态电子元件（如功率晶体管）来实现电气信号
的控制。

SSR固态调压器是一种特殊类型的固态继电器，它用于调
节电压并控制电路中的负载。

SSR固态调压器的原理基于电子元件的特性和工作原理。

通常，它由输入控制电路、功率调节电路和负载电路组成。

当输入控制电
路施加控制信号时，功率调节电路会根据控制信号来调节输出电压，从而控制负载电路的电压。

SSR固态调压器的核心部件是功率晶体管或双向可控硅（SCR）。

这些电子元件可以通过控制电流或电压来改变其导通状态，从而实
现对电路的调节。

当控制信号施加到SSR固态调压器上时，功率晶
体管或SCR将调节电路中的电压，使得负载电路中的电压得到控制。

与传统的机械式调压器相比，SSR固态调压器具有更快的响应
速度、更高的精确度和更长的使用寿命。

它不需要机械部件，因此
可以减少维护成本和故障率。

此外，SSR固态调压器还可以实现远程控制和自动化控制，使得其在工业生产和自动化领域有着广泛的应用。

总的来说，SSR固态调压器通过电子元件的控制和调节，实现了对电路中电压的精确控制，具有快速响应、高精度和可靠性强的特点，逐渐成为电气控制领域中不可或缺的重要设备。

SSR固态继电器工作原理及常见问题摘要：固态继电器（Solid State Relay,缩写SSR），是由微电子电路，分立电子器件，电力电子功率器件组成的无触点开关。

用隔离器件实现了控制端与负载端的隔离。

固态继电器的输入端用微小的控制信号，达到直接驱动大电流负载。

固态继电器工作原理详细介绍SSR固态继电器以触发形式,可分为零压型(Z)和调相型(P)两种。

在输入端施加合适的控制信号VIN时,P型SSR立即导通。

当VIN撤销后,负载电流低于双向可控硅维持电流时(交流换向),SSR关断。

Z型SSR内部包括过零检测电路,在施加输入信号VIN时,只有当负载电源电压达到过零区时,SSR才能导通,并有可能造成电源半个周期的最大延时。

Z型SSR关断条件同P型,但由于负载工作电流近似正弦波,高次谐波干扰小,所以应用广泛。

有的公司SSR由于采用输出器件不同,有普通型(S,采用双向可控硅元件)和增强型(HS,采用单向可控硅元件)之分。

当加有感性负载时,在输入信号截止t1之前,双向可控硅导通,电流滞后电源电压90O(纯感时)。

t1时刻,输入控制信号撤销,双向可控硅在小于维持电流时关断(t2),可控硅将承受电压上升率dv/dt很高的反向电压。

这个电压将通过双向可控硅内部的结电容,正反馈到栅极。

如果超过双向可控硅换向dv/dt指标(典型值10V/s,将引起换向恢复时间长甚至失败。

单向可控硅(增强型SSR)由于处在单极性工作状态,此时只受静态电压上升率所限制(典型值200V/s),因此增强型固态继电器HS系列比普通型SSR的换向dv/dt指标提高了520倍。

由于采用两只大功率单向可控硅反并联,改变了电流分配和导热条件,提高了SSR输出功率。

固态继电器的应用固态继电器是由固态元件组成的无触点开关，具有工作安全可靠、寿命长、无触点、无火花、无污染、高绝缘、高耐压（越过2.5kv）、低触发电流、开关速度快、可与数字电路巨配，以阻燃型环氧树脂为原料，采用灌封技术，使与外界隔离，具有良好的耐压、防潮、防腐、抗震动等性能。

ssr固态继电器工作原理SSR固态继电器（Solid-State Relay）是一种使用半导体器件来实现电气隔离和电路开关的电子元件。

相比传统的机械继电器，SSR 具有响应速度快、寿命长、体积小、耐振动、无噪音等优点。

本文将从SSR固态继电器的工作原理、结构组成和应用领域等方面进行详细介绍。

一、工作原理SSR固态继电器的工作原理基于半导体器件的导通与截止特性。

它由输入控制电路和输出功率电路两部分组成。

输入控制电路接收外部的控制信号，通过对控制电路中的半导体器件进行驱动，使得输出功率电路中的半导体器件导通或截止，从而实现对输出电路的控制。

具体来说，输入控制电路通常由光耦隔离器、驱动电路和触发电路组成。

当输入控制信号到达时，光耦隔离器将信号光电转换，驱动电路将光电信号转换为电流或电压信号，进而通过触发电路对输出功率电路进行控制。

输出功率电路由半导体器件（如晶闸管、三极管）和负载组成。

当输入控制电路中的半导体器件导通时，输出功率电路中的半导体器件也将导通，从而使得负载得到电源的供电；当输入控制电路中的半导体器件截止时，输出功率电路中的半导体器件也将截止，负载将不再接收电源供电。

二、结构组成SSR固态继电器的基本结构通常包括输入控制电路、输出功率电路和隔离层。

其中，输入控制电路主要负责接收和处理外部的控制信号；输出功率电路主要负责对负载进行电源的控制；隔离层则起到隔离输入控制电路和输出功率电路的作用，保证两者之间的电气隔离。

在输入控制电路中，光耦隔离器起到了关键作用。

光耦隔离器通常由发光二极管（LED）和光敏三极管（光电晶体管）构成。

当输入控制信号到达时，LED被激活，发出特定的光信号；光敏三极管根据接收到的光信号的强弱，产生相应的电流或电压信号。

输出功率电路中的半导体器件通常由晶闸管或三极管构成。

晶闸管具有导通电流大、耐压能力强的特点，适用于大功率负载的控制；而三极管则适用于小功率负载的控制。

这些半导体器件能够通过输入控制电路的驱动来实现导通或截止状态，从而控制负载的电源供应。

固态继电器（SSR）是一种电子元件，通常用于在不导电的情况下控制电流。

它由两个主要部分组成：输入部分和输出部分。

输入部分通常包括控制信号（如电压或电流），而输出部分则负责控制通过电阻器的电流。

关于固态继电器通断次数的具体数字，这取决于许多因素，包括继电器的类型、负载类型和大小、环境条件（例如温度和湿度）、使用条件（例如电压和电流水平）以及继电器的制造质量。

一般来说，高质量的固态继电器具有更高的耐久性和可靠性，可以承受更高的负载和更频繁的开关操作。

对于一般的商业用途，固态继电器通常可以承受数百到数千次的无故障开关操作。

然而，有一些高级型号可以提供数百万次的寿命。

因此，在许多情况下，使用固态继电器不会面临寿命限制问题，但为了最佳的使用效果，请确保在正确的工作环境和负载下使用它们。

请注意，这只是一个大致的估计，并且具体情况可能会有所不同。

在实际应用中，最好参考固态继电器的制造商提供的具体数据和规格，以获得最准确的信息。

总的来说，固态继电器的通断次数是一个关键特性，它决定了继电器在特定应用中的使用寿命。

在选择固态继电器时，请务必参考制造商的数据和规格，以确保选择适合您需求的可靠型号。

另外，值得注意的是，尽管固态继电器具有出色的可靠性和寿命，但在极端条件下（例如过热、过载或频繁开关）仍然可能出现问题。

因此，在设计和使用固态继电器时，应遵循制造商的指南和建议，并确保它们适合您的工作环境和工作负载。