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Unfortunately, I don't think that resolves the issue.EN-61010-1, the older revision of the standard states in section 16.2:----Multifunction meters and similar equipment shall not cause a hazard in any possible combination of rated input voltages, and settings of function and range controls.The maximum rated voltage specified for any function is applied to each pair of terminals in turn, in every combination of function and range controls.During and after the tests, no hazard shall arise.----I believe EN 61010 -2-030:2010 is even tighter and deals with possible misuse, which surely must include leaving the probes in the current range when trying to measure voltage.If I apply the maximum rated voltage for the voltage function to each pair of terminals, including the current terminals, I'm sure a hazard will arise.Your product page also just states the CAT rating without any qualification - nearly every other multimeter on the market has the same ratings for all terminals. The manual isn't available online for me to look at - until you look into it, it isn't clear that this is a UT-71D from Unitrend.I'm also going to pre-empt the manufacturer - I bet they say the CAT rating is only marked for the voltage terminals on the meter. Every other meter with adequate protection on the current terminals is marked the same - look at the Fluke 87V, Amprobe AM-140-A etc.It's clear from the layout of the board that they intended to use larger fuses that could provide the required level of protection. Why this was changed, I don't know.I really don't think that this meter is safe or complies with the standards marked on it.
1. In EN61010-1:2001, no any clauses request the maximum interrupting current of the fuses must comply with a rated value, and as you mentioned, in clause 16.2: “Multifunction meters and similar equipment shall not cause a hazard in any possible combination of rated input voltages, and settings of function and range controls”, so we had evaluated no hazards when the maximum rated voltage specified for any function is applied to each pair of terminals in turn (See attached page 53 & 54 of test report), except that, the enclosure and product construction had been designed to reinforced insulation, thereby the products complied with EN61010-1:2001.2. Except the misuse tests basic on clause 16.2 which had been evaluated no hazards, the current terminals must be designed to have adequate clearance and creepage distance to guarantee product safety when rating maximum voltage applied on them.
@vtl: thank you for telling me that, i tried and it works. I find 2 problems with that anyway. First one is why it doesnt say that anywhere? And other one is it still gives some random values even in manual range mode.