inform SAVER PLUS DSP SERIES, Руководство пользователя

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At some building electricity distribution systems, there can be sockets just composed of two lines
(phase & neutral) but may seem like a socket with earthing. This socket’s earthing point is either not
connected to the protecting earthing or it is connected to neutral point instead. When there is no flow
of current on the neutral line than it may be on a protecting earthing level. When these sockets and
other parallel sockets are loaded, the neutral voltage shall be different than the protecting earthing
level which causes a security problem concerning the connected riggings and the person health.
The authorised staff should control the supporting riggins of the equipments that are
connected to the UPS if they have been connected to the earthed sockets.
The UPS, that is supplying the computers and their supporting riggings, should have been connected
to the distribution panel directly. The equipments having high noise and leakage current such as
refrigerator or climate should not be connected to the same fuse with the UPS. Otherwise there can
be some problems regarding noise and leakage current protection.