MTB or Mechanical Trip Button is a proprietary lockout feature that prevents an operator from re-energizing the circuit breaker before isolating the fault and resetting the MTB. When activated, the MTB latches the output contacts and continues to indicate the presence of a fault until it is cleared, and the relay reset.

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3. Push Buttons Reset Button • The reset button is for resetting the light indicators (l> or l>>) after an earth-fault tripping has occured. • To reset, press the reset button once.

The MK232A is microprocessor based numerical earth-fault relay. It uses fundamental frequency current measurement for excellent harmonic current rejection. The relay consists of independent low-set and high-set elements. The high-set element can be disabled by the user.

ELFR是早期失效的试验验证，它是要求每批800个共3批样本开展试验，来证明产品早期故障率符合规定的一种试验。 150℃、48h的试验按照0.7活化能算下来相当于55℃下运行12500h。 1/（800\times3\times12500）=33PPB ，那么就证明其早期失效率小于33PPB，也就是0.033PPM。 125℃、48h的试验按照0.7活化能算下来相当于55℃下运行3750h。 1/（800\times3\times3750）=111PPB ，那么就证明其早期失效率小于111PPB，也就 …

Short circuit protection device for 1Ø & 3Ø system. 2 X 1 C / O (SPDT) Relay output. Trip relay and Pre-alarm relay independently programmable. Selec 900EFR Digital Earth Fault Relay ensures safety by detecting stray voltages on metal enclosures, offering short circuit protection. DIN rail mount, programmable settings. CE certified.

The LN10X61Q1 is designed to meet the optimization requirements of PCB layout in the pin assignment. For example, VIN and GND pins are adjacent to each other, which is convenient for placing VIN bypass capacitors. Layout Guidelines Radiated EMI is generated by the high di/dt components in pulsing currents in switching converters.

Earth Fault relay is microcontroller based device, which measures the earth fault current through CTs installed for sensing Earth Fault current. The Relay operates when the current exceeds the set value and persists for more than the set time delay for operation.

惊叹号符号表示一般性警告,而各种危险符号则表示与特定操作过程有关的危险。 当这些符号出现在本手册的正文或警告标签上时,请参见这些警告的含义。 并未包含在本章节内的针对产品的危险符号及警告,可能在本手册内适当的章节出现。 以上的电压供电。 接触此电压将导致死亡或严重伤害。 在断开任何电缆连接或进行设备维修之前,要关掉总开关并切断电源。 该设备必须接地。 只能连接到已接地的电源上。 所有的电气接线都必须由合格的电工来完成,并符合当地的所有规范 …

MBI和TDBI是不同的，MBI就是output monitoring ,检测的是输出pin的信息，也是一种监测手段。 TDBI一般是可以真正意义上实现function test during BI. 目前据了解在存储器类和一些高密度封装器件上国外已经有这种技术与机器了。 早期失效EFR：目的是通过试验得到产品的早期失效率，所以试验的样本量较大。 高温寿命HTOL：目的是通过此鉴定试验得到产品的使用寿命，所以试验时间较长。 老练筛选Burn-In：目的是通过试验剔除早期失效产品提高批 ... 业内精通人士,佩 …