AMETEK CTS Quick start guide - Conducted
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Faraday cage.
6.4. Installation of the compact NX / NSG 3000A
6.4.1. Installation site
Place the test system so that there is enough free space around the cooling air inlets on both sides and behind the fan outlet
on the rear panel.
6.4.2. Voltage free switching
Make sure that the cables can be connected without hindrance and disconnected without problems.
The complete voltage disconnection from the device is carried out by disconnecting the cables. Make sure that capacitors
inside the device can still be under voltage, even in an emergency.
6.4.3. Grounding and power connection
Two independent ground connections are necessary- one for the test system and one for the EUT. These must be connected
back to the local permanent installation or to a fixed, permanent ground conductor. To avoid electric shock the power cord
protective grounding conductor must be connected to ground.
Figure 20 - Grounding and power connection
System GND
The system is connected to GND via the earth wire of the connected mains power cable for the generator and the EUT
supply. A separate GND wire from the reference GND plane to the building earth point may be useful to avoid interferences to
other areas.
EUT GND
Ensure that a reliable return path for the interference current is provided between the EUT and the generator. The GND wire
from the generator to the reference GND and must be designed as a low inductance connection suitable for high frequencies.
The reference ground plane and the ground connections to the instruments, as described in the relevant test standards, serve
this purpose well.
Protection (optional)
A proposal is to separate protection of the EMC system with filters, insulation transformer or fault current protection and other
measures may be useful for the EMC installation. The advantage is the separation of the EMC system from all other
installation.
A shielded room with adequate filters may be the best solution for avoid unwanted conducted and radiated interference to
other areas.
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