NR Electric PCS-9611, Instruction Manual

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11 Installation
PCS-9611 Feeder Relay
11-4
Date: 2014-04-08
these modules must be plugged into the proper slots of this relay respectively. The safety
instructions must be abided by when installing the boards, please see Section 11.2 for the details.
Figure 11.6-2 shows the installation way of a module being plugged into a corresponding slot.
Figure 11.6-2 Demonstration of plugging a board into its corresponding slot
In the case of equipment supplied in cubicles, place the cubicles on the foundations that have
been prepared. Take care while doing so not to jam or otherwise damage any of the cables that
have already been installed. Secure the cubicles to the foundations.
11.7 Electrical Installation and Wiring
11.7.1 Grounding Guidelines
Switching operations in HV installations generate transient over voltages on control signal cables.
There is also a background of electromagnetic RF fields in electrical inst allations that can induce
spurious currents in the devices themselves or the leads connected to them.
All these influences can influence the operation of electronic apparatus.
On the other hand, electronic apparatus can transmit interference that can disru pt the operation of
other apparatus.
In order to minimize these influences as far as possible, certain standards have to be observed
with respect to grounding, wiring and screening.
NOTE! All these precautions can only be effective if the station ground is of good quality.
11.7.2 Cubicle Grounding
The cubicle must be designed and fitted out such that the impedance for RF interference of the
ground path from the electronic device to the cubicle ground terminal is as low as possible.
Metal accessories such as side plates, blanking plates etc., must be effectively connected