Most microcomputer users buy a surge protector , a device that separates the computer from the power source of the wall outlet 大多数微机用户购买浪涌电压保护器，一种将计算机与壁装电源插座的电源分开的设备。
Exchange non - clearane metal oxidate matter arrester is suitabe for the voltage protection of transformer switch cupboard , vacuum switch etc 交流无间隙金属氧化物避雷器，适用于变压器、配电屏、开关柜、真空开关、输电线路、电力计量箱、并联补偿电容器、旋转电机等电压保护。
Their purpose is to protect equipment such as transformers and switchgear from damage ; the voltage protection level would be of less importance than its ability to dissipate the charge to earth 其作用是保护诸如变压器及开关器具免遭损坏，因此，其对地泄流的能力要比电压保护水平重要。
These devices would need to be tested to a peak current whilst simultaneously measuring the vpl . the class 2 test accomplishes this requirement . the waveshape is defined , not the charge q 对这类型的设备进行峰值电流的测试，同时测量其电压保护水平（ vpl 。等级2测试规定了这些要求，并对波形进行了定义，但没对电荷q进行定义。
Connection method includes single star and double star , relaying protection method includes open delta voltage protection , differential current protection , differential protection , neutral unbalance current protection etc 接线方式有单星或双星接线,继电保护方式有开口三角电压保护、差流保护、差压保护、中性点不平衡电流保护等几种形式。
The controller uses the tms320f240 of ti company as the main control unit , adopts pi digital adjusting and pwm controlling , produces turn - on and turn - off signal of the igbt , combining with the protection current and voltage 该控制器以ti公司的tms320f240为主控单元，采用pi数字调节及pwm控制，并结合电流、电压保护，实现对主功率器件的通断控制。
Compared with the old product , the new st spd has a higher maximum discharge current and nominal discharge current , better voltage protection that can be used for flexible failure indication . its size is in consistence with our current c65 circuit breaker , which makes it more beautiful when mounted together in a panel 此次发布会上发布另一款产品- st系列固定式电涌保护器也有了更为强大的功能：首先，它的最大放电电流和标称放电电流更大，电压保护水平更好，这使得产品持续运行时间更长，不易老化。
Experiment result shows that this device completes the exact current protections , voltage protections and alarms . it realizes the accurate measurement , calculation , storage and display of measuring data . it fulfills the remote surveillance by pc through can communication 整个装置通过了全面的实验验证，实验结果表明装置能够准确的实现各种电流、电压保护和各种告警功能；实现对系统运行参数的精确测量、计算、保存和显示；通过can通信实现pc机对装置的远程监控。
