How to make the protection in the shield work before the opening difavtomat?
House (mini-hotel) in the countryside, 3-phase connection. Electricians put the differential automatic machine outside the house (at the substation). They said that this is necessary according to the standards. When the machine is triggered (a guest with some kind of left charge will arrange it), the machine is knocked out to the house in the shield and the difavtomat in TP. We have to call the duty officer in the area and then wait (sometimes more than a day) when the dezh arrives. brigade (few brigades in the area) and will open TP. And just a matter of a minute - to turn on the machine again (naturally eliminating the cause of the short circuit). Is there a way to somehow arrange it to work up to an external machine, so as not to sit without light and not wait when the electricians finally arrive, open the transformer substation and do not distort the machine?
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Hello! Put another circuit breaker at the entrance to the house, but its rated current should be less than the declared current of the difavtomat in the TP. If an automatic machine with a lower rated current cannot be supplied, then the option remains - to install an automatic machine with a higher sensitivity and response speed than on a transformer substation. Sensitivity in this context refers to the response speed. It is designated by the letter A, B, C and others. The closer to A, the more sensitive. I do not see other options. Then you can try to agree to install an automatic machine on the TP with the following rated current in the size range, so that you can ensure that your home automatic machine is triggered in the first place. This is called selectivity.