万用表，耐压600V和1000V，普通使用有没有区别？

paperpanda

应该说的是CAT等级吧。严格来说1000V以下都算低压，CAT等级高并且没有虚标的表，和等级低或者虚标的表，最直接就是特殊情况下会不会炸在手里。

EEVBLOG有视频，国内翻译：
【EEVblog #84 - 炸掉你的万用表】 https://www.bilibili.com/video/B ... are_source=copy_web

[color=var(--text-color)]CAT I	Electronic Devices	Anything from a small circuit board to larger device with high-voltage but low-energy
CAT II	Single-Phase AC Loads	Appliances or portable tools
CAT III	Three-Phase Distribution	Some large building lighting systems and polyphase motors
CAT IV	Three-Phase Utility Connections or Outdoor Conductors	Electrical meters, outdoor connections, any low-voltage and high-energy connection

Measurement Category	Working Voltage	Transient Voltage	Test Source (Impedance)	Working Current	Transient Current
CAT I	150V	800V	30 Ohms	5A	26.6A
CAT I	300V	1500V	30 Ohms	10A	50A
CAT I	600V	2500V	30 Ohms	20A	83.3A
CAT I	1000V	4000V	30 Ohms	33.3A	133.3A
CAT II	150V	1500V	12 Ohms	12.5A	125A
CAT II	300V	2500V	12 Ohms	25A	208.3A
CAT II	600V	4000V	12 Ohms	50A	333.3A
CAT II	1000V	6000V	12 Ohms	83.3A	500A
CAT III	150V	2500V	2 Ohms	75A	1250A
CAT III	300V	4000V	2 Ohms	150A	2000A
CAT III	600V	6000V	2 Ohms	300A	3000A
CAT III	1000V	8000V	2 Ohms	500A	4000A
CAT IV	150V	4000V	2 Ohms	75A	2000A
CAT IV	300V	6000V	2 Ohms	150A	3000A
CAT IV	600V	8000V	2 Ohms	300A	4000A
CAT IV	1000V	12000V	2 Ohms	500A	6000A