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欠过压监视器VMD420Multi-functional, 3(N) AC, overvoltage, undervoltage, window discriminator function phase sequence, phase failure, asymmetry with separate supply voltage.多功能,3(N)AC,过压,欠压,窗口鉴别功能相序,断相,不对称单独的电源电压。Device feature设备功能1. Under and overvoltage monitoring in 3(N) AC systems 0500V欠过压监测的3(N) AC系统0. 500 V2. Monitoring of asymmetry, phase failure,phase sequence监测不对称,缺相,相序3. Different monitoring functions U U can be selected不同的监控功能 U U可以选择4. Starting delay, response delay and delay on release启动延迟,响应延迟和延迟释放5. Adjustable switching hysteresis可调节的开关滞后6. R.m.s. value measurementR.m.s.值计量7. Digital measured value indication via multi-functional LC display通过多功能液晶显示屏的数字测量值显示8. Preset function (automatic assignment of basic parameters)预置功能(自动分配的基本参数)9. Power On LED, alarm LEDs AL1, AL2电源指示灯,报警LED AL1,AL210. Measured value memory for operating value测量值存储器存储操作值11. Continuous self monitoring持续的自我监测12.TEST/RESET button, internal内部TEST / RESET按钮13.Two separate alarm relays (Alarm assignment, selectable via menu)两个独立的报警继电器(报警分配,通过菜单选择)14.N/C operation or N/O operation and fault memory behaviour selectableN / C操作或N / O操作,可以选择故障存储器行为15.Password protection for device setting设备设置密码16.Sealable transparent cover保护密封的透明盖17.2-module enclosure (36 mm)模块外壳(36毫米)18.Display of system frequency系统频率显示Product description产品描述The multi-functional voltage monitor VMD420 monitors undervoltage, overvoltage and the voltage between two threshold values (window discriminator function) in 3(N) AC systems. The voltages are measured as r.m.s. values. The currently measured value is continuously shown on the LC display. The measured value leading to the activation of the alarm relays will be saved. Due to adjustable response times, installation-specific characteristics, such as device-specific starting periods, short-time voltage fluctuations, cooling down periods etc. can be considered. The devices require a separate supply voltage.多功能的电压监视器VMD420监视欠压,过压和3(N)AC系统中的两个值(窗口鉴别器功能)之间的电压。电压r.m.s值作为测定值。当前测量值连续显示在液晶显示器上。导致报警继电器动作的测量值将被保存。由于可调的响应时间、安装的具体特点,如特定于设备的起始时期,短时间的电压波动、降温期间等是可以考虑的。该设备需要单独的电源电压。Typical application典型用途1 Monitoring of voltage-sensitive machines and system监测的电压敏感设备及系统2. Switching systems on or off at a specified threshold value在设定值时切换的系统on or off3. Monitoring of emergency or stand-by power supplies监控紧急情况或者待机电源4. Monitoring of the operating voltage of mobile loads移动负载的工作电压监测Function功能Once the supply voltage is applied, the starting delay “t”is activated. Measured values changed during this time do not influence the switching state of the alarm relays.The devices provide two separately adjustable measuring channels (overvoltage/under-voltage). When the measuring quantity exceeds the response value (“Alarm 1”) or falls below the response value (“Alarm 2”), the time of the response delays “ton1/2”begins. After the expiry of the response delay, the alarm relays switch and the alarm LEDs light. If the mea-suring quantity exceeds or does not reach the release value (response value plus hysteresis) after the alarm relays have switched, the set release time “toff”begins. After the expiry of “toff”, the alarm relays switch back to their initial position. With the fault memory activated, the alarm relays remain in alarm state until the RESET button is pressed.一旦电源电压被施加时,启动延时“t”被激活。在这段时间内的测量值改变不影响报警继电器的开关状态。该器件提供两个独立可调的测量通道(过压/欠压)。当测量的数量超过的应答值(“报警1”),或低于的应答值(“报警2”),响应延迟时间的“TON1/ 2”开始。响应延时时间一到,报警继电器开关和报警LED灯亮。如果测量的数量超过或不达到释放报警继电器已切换后的值(响应值加滞后),设置的释放时间“toff”开始计时。“toff”时间一到,报警继电器切换回其初始位置。故障存储器激活后,报警继电器一直处于报警状态,直到按下RESET按钮。Preset function预置功能After switching the device on for the first time, the system voltage will be determined (PrErun) and the response values for overvoltage and undervoltage will automatically be set. When no voltage is determined within a system voltage range (PrE run), the response values will be set to the minimum respectively to the maximum voltage. The display will then show“AL not SEt”. As long as no key is pressed, the device will cyclically look for the nominal system voltage (PrE run). If a key is pressed, the search will be interrupted, the message “AL not SEt” will no longer appear”. In this case, the appropriate response values have to be set in the menu.首次切换设备之后,系统电压将被确定(预运行)及过压和欠压的响应值将被自动设置。当没有电压被确定在一个系统内的电压范围(预运行)时,不加电压时的响应值将被设置为最大电压的最小电压分别。显示屏将显示“AL未设置”。 只要没有任何按键被按下时,该设备将周期性地寻找标称系统电压(预运行)。如果一个键被按下,搜索会被打断,“AL未设置”的消息将不再出现。在这种情况下,适当的响应值必须被设置在菜单中。Operating elements操作原理1. Power On LED (green); lights when supply voltage is applied and flashes in the event of system fault alarm电源指示灯(绿色);灯在施加电源电压时常亮以及发生系统故障报警时闪烁。2. Alarm LED “AL1”(yellow), lights when the set response value U is exceeded and flashes in the event of system fault alarm.报警灯“AL1”(黄色),灯在超过设定的响应值 U时亮以及发生系统故障报警时闪烁。3. Alarm LED “AL2”(yellow), lights when the set response value U is reached and flashes in the event of system fault alarm.报警灯“AL2”(黄色),灯在达到设定的响应值 1.5 s.TEST键:向上键:改变测量值显示,在菜单中向上移动或更改参数;调用自我测试:按下此键1.5秒。6. RESET button: Down key: change the measured value display, move downwards in the menu or change parameter; Delete stored alarms: Press the key 1.5 s.RESET键:向下键:改变测量值显示,在菜单中向下移动或改变参数;删除存储的报警:按下键 1.5 s;Press ESC key for 1.5 s: to abort an action or to return the previous menu level.菜单键:确认键:确认测量值显示或更改说明参数;调出菜单系统:按下该键1.5秒;按ESC键1.5秒:来中止行动,或返回上一级菜单Wiring diagram接线图 1. Connection of the system being monitored/load监视系统/负载连接情况2. Supply voltage US(see ordering information)电源电压用美国标准(见订购信息)3. Alarm relay “AL1报警继电器“AL1”4. Alarm relay “AL2报警继电器“AL2”5. Line protection by a fuse. A 6 A fuse is recommended. In case of supply from an IT system all measuring connections as well as the supply connection have to be protected by a fuse.用保险丝保护线路。建议用6A的保险丝。在提供从IT系统情况下,所有的测量连接以及电源连接必须用保险丝保护。Timing diagram voltage monitoring电压监测时序图1. t-Starting delayt-启动延迟2. tan-Response delaytan-响应延迟3. toff-Release delaytoff-释放的延迟时间4. voltage电压5. Supply voltage电源电压6. Alarm LEDs报警指示灯7. Alarm relay报警继电器MEN off存储器关 MEN on存储器开Timing diagram phase failure, phasese quence,asymmetry时序图缺相、相序、不对称Technical data技术参数Insulation coordination acc. to IEC 60664-1/IEC 600664-3.绝缘配合。参考IEC 60664-1/IEC 600664-3。1. Rated insulation voltage额定绝缘电压 400V2. Rated impulse voltage/pollution degree额定冲击电压/污染程度 4kV/III3. Protective separation (reinforced insulation) between (A1, A2) - (N, L1, L2, L3) - (11, 12, 14) - (21, 22, 24)保护隔离(加强绝缘)区间(A1, A2) - (N, L1, L2, L3) - (11, 12, 14) - (21, 22, 24)4. Voltage test acc. to IEC 61010-1测试电压根据IEC 61010-1选择:(N, L1, L2, L3) - (A1, A2) - (11, 12, 14) 3.32kV(N, L1, L2, L3) - (21, 22, 24) 2.21kV(A1, A2) - (11, 12, 14) - (21, 22, 24) 2.21kVSupply voltage电源电压VMD420-D-1:Supply voltage US电源电压US AC 1672V/DC 9.694VFrequency range US频率范围US 42460HzVMD420-D-2:Supply voltage US电源电压US AC/DC 70300VFrequency range US频率范围US 42460HzPower consumption耗电量 2.5 VMeasuring circuit测量电路Measuring range (r.m.s. value)测量范围(r.m.s.值) AC 0288V(L-N) AC 0500V(L-L)Rated frequency fn额定频率f2 42460HzFrequency display频率显示 10500HzResponse values响应值Type of distribution system分布系统的类型 3 (N) AC/3 AC (3 AC)Undervoltage U (Alarm 1)过电压U(报警1) AC 6500VBy preset function for 3 AC measurement:通过3 AC预置功能测量:Undervoltage U (0.85 x Un)* for Un= 400 V / 208 V欠压 U (1.1 x Un)* for Un= 400 V / 208 V过电压 U(1.1 x Un)* for Un= 400 V / 208 V 440V/229VBy preset function for 3(N)AC measuremen:通过3(N)AC预置功能测量:Undervoltage U (0.85 x Un)* for Un= 230 V / 120 V欠压 U (1.1 x Un)* for Un= 230 V / 120 V过电压 U(1.1 x Un)* for Un=230 V / 120 V 253V/132VAsymmetry不对称 530%(30%)*Phase failure相故障 by setting of the asymmetry通过设置的不对称性Phase sequence相序 clockwise / anticlockwise rotation (off)*顺时针/逆时针旋转(关闭)*Relative percentage error at 50 Hz / 60 Hz相对百分比误差 1.5%2字Relative percentage error in the range of 42460 Hz在42460Hz范围内相对百分比误差 3%2字Hysteresis迟滞 140%(5%)*Specified time指定的时间Starting delay t启动延迟t 099 s (0s)*Response delay ton1/2响应延迟ton1/2 099 s (0s)*Release delay toff释放的延迟时间tof 099 s (0.5s)*Operating time tae工作时间tae 140msResponse time tan响应时间tan tan=tae+ ton1/2Recovery time tb恢复时间tb 300msDisplays, memory显示,存储器Display显示器 LC display, multi-functional, not illuminated液晶显示屏,多功能,不亮Display range, measured value显示范围,测量值 AC 6500V;Operating error at 50 Hz / 60 Hz在50赫兹/ 60赫兹时操作误差 1.5%2字Operating error in the range of 42460 Hz在42460Hz操作误差 3%2字Resolution分辨率 1VHistory memory (HiS) for the first alarm value第一报警值的历史存储值(HIS) data record measured value数据记录测量值Password密码 off/0999 (off)*Fault memory (M) alarm relay故障存储器(M)报警继电器 on/off (on)*Switching elements开关元件Number of changeover contacts数字转换触点 2x1(K1,K2)Operating principle工作原理 N/C operation n.c. /N/O operation n.o.K2: Err, U, Asy, PHS (undervoltage U, asymmetry Asy, N/C operation n.c.)*K1: Err, U, Asy, PHS (overvoltage U, asymmetry Asy, N/O operation n.o)*Electrical service life under rated operating conditions电器在额定工作条件下的使用寿命10.000 switching operations10.000开关操作Contact data acc. to IEC 60947-5-1参考资料IEC 60947-5-1:Utilization category使用类别 AC 13 AC 14 DC 12 DC 12 DC 12Rated operational voltage额定工作电压 230V 230V 24V 110V 220VRated operational current额定工作电流 5A 3A 1A 0.2A 0.1AMinimum contact load最小触点负载 1 mA at AC/DC10VEnvironment/EMC环境/ 电磁兼容性EMC电磁兼容性 IEC 61326Operating temperature工作温度 -25 C+55 CClimatic class acc. to IEC 60721气候等级参考IEC 60721:Stationary use(IEC 60721-3-3)固定使用(IEC 60721-3-3) 3K5 (except condensation and formation of ice )3K5(缩合和冰形成除外)Transport(IEC 60721-3-2)运输(IEC 60721-3-2) 2K3 (except condensation and formation of ice )3K5
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