Chapter 2
Installing the Device
RUGGEDCOM RMC20
Installation Guide
8 Connecting AC Power
• All line-to-ground transient energy is shunted to the Surge Ground terminal. In cases where users
require the inputs to be isolated from ground, remove the ground braid between Surge and Chassis
Ground. Note that all line-to-ground transient protection circuitry will be disabled.
IMPORTANT!
Siemens requires the use of external surge protection in VDSL applications where the line may be
subject to surges greater than that for which the device is rated. Use the following specifications as a
guide for VDSL external surge protection:
• Clamping Voltage: 50 V to 200 V
• Insertion Loss: < 0.1 dB at 10 MHz
• Peak Surge Current: 10 kA, 8x20µs waveform
CONTENTS
• Section2.2.1, “Connecting AC Power”
• Section2.2.2, “Connecting DC Power”
Section2.2.1
Connecting AC Power
To connect a high AC power supply to the device, do the following:
CAUTION!
Electrical hazard – risk of damage to equipment. Before testing the dielectric strength (HIPOT) in the
field, remove the braided ground cable connected to the surge ground terminal and chassis ground.
This cable connects transient suppression circuitry to chassis ground and must be removed in order to
avoid damage to transient suppression circuitry during testing.
1. Connect the positive wire from the power source to the positive/live (+/L) terminal on the terminal block.
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