An "Overcurrent relay" is a type of protective relay which operates when the load current exceeds a preset value.
过电流继电器是继电保护装置的一种，当负载电流超过整定值时，继电器动作。
Changing from one preset current to another can be simple as pressing a button, or switch automatically at an adjustable frequency.
从一个电流转换到另一个电流只需简单的一个按钮﹐或者在一个可以调节的频率下自动切换。
The equipment ensures automatic closing at current zero, preset test voltage automatically and the effect is fine.
设备自动保证过电流零点合闸，自动预置试验电压，试验效果好。
In modulation driving circuit, with the chip MAX3263, being the function of APC, there is standard PECL level interface to modulate laser modulation current and preset current neatly.
在调制驱动电路中，采用MAX3263芯片，具备标准的PECL电平接口，可以灵活地调整激光器的预置电流和调制电流，并具备自动功率控制功能。
The welding current, arc voltage, preset current, the period and ratio of pulse, base current, down slope time, gas pre and post flow time are sampled, calculated and controlled by microprocessor.
单片机对焊接电流、电弧电压、电流给定、脉冲周期、占空比、基值电流、收弧电流衰减时间、前气和后气时间等焊接参数进行采样、计算和控制。
With unified adjusting function, it can preset welding wire diameter and welding current, can automatically match out the regulated welding parameter, it's easy to for beginner to operate.
具有一元化调节功能，可预置焊接电流，能自动匹配规范的焊接参数，操作简单，有利于初用者的操作。
Precise digital display of preset and actual welding current.
精确数显电流预置值和实际值。
Precise digital diaplay of preset and actual welding current .
精确数显电流预置值和实际值。
Precise digital diaplay of preset and actual welding current .
精确数显电流预置值和实际值。
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