Connecting High Ac/Dc Power - Siemens SIMATIC NET RUGGEDCOM RS950G Equipment Manual

Installing the Device
2.5.1 Connecting High AC/DC Power
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:
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2.5.1

Connecting High AC/DC Power

To connect a high AC/DC power supply to the device, do the following:
Electrical hazard – risk of damage to equipment
Do not connect AC power cables to terminals for DC power. Damage to the power
supply may occur.
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.
12
ground braid between Surge and Chassis Ground. Note that all line-to-ground
transient protection circuitry will be disabled.
NOTICE
Clamping Voltage: 50 V to 200 V
Insertion Loss: < 0.1 dB at 10 MHz
Peak Surge Current: 10 kA, 8x20µs waveform
NOTICE
NOTICE
Connect the positive wire from the power source to the positive/live (+/L)
terminal on the terminal block.
RUGGEDCOM RS950G
Equipment Manual, 10/2023, C79000-G8976-1037-08