UPS: MKD 700 – 3000 VA RT (XL) Installation and Connection
Fig. 5-10 Turn the control panel according to the installation.
5.3 Preparations for connection
The following ambient conditions and sanctions must be considered before the
device can be connected.
5.3.1 Input protection for the UPS
It is generally guarunteed that the UPS device is connceted to a suitable power
supply network according to EN 62040. Usually, this includes the TN-S network.
In the event of a power failure, the reference conductor is device internally
interrupted. The TN-S network becomes an IT network for the duration of the
support period.
The supply isolation on the side of the main power supply (power outlet, circuit
breaker) should be available for maintenance and service purposes.
We generally do not recommend the use of a GFCI (ground fault circuit
interrupter) on the power supply side in connection with a UPS device. On the
contrary, the GFCI should be installed on the UPS output or better directly prior
to the loads. For the duration of the support period, this is, however, also
ineffective due to the interruption of the reference conductor.
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