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Universal Network Terminal TAU-32M.IP 29
3.2.1
Startup Sequence
Connect subscriber lines, optical and electrical Ethernet cables to corresponding switch connectors.
To protect subscriber lines against surge, linear side of the cross must be equipped with 'MKZ
3-K' arresters with operate voltage of 230V.
The arresters (MKZ) are designed to protect the FXS and FXO sets of TAU-32M.IP gateways
from dangerous surge voltages and currents in air cable strands caused by lightning discharge,
high-voltage electric transmission lines, overhead wirings of electric railway and various
industrial sources of impulse interferences as well as from contact with low voltage power lines.
The arresters contain two voltage protection cascades (the first one is on the aerial fuse,
the second one is on the semiconductor switches) and current protection (on the polymer
posistors).
The installation of MKZ arrestors requires the grounding bar mounted on the linear side. The
arrester is installed in normally closed connecting strip (Krone, Intercross or their compatibles)
according to the marking on the device body. The connection diagram is shown in Fig.
Fig. 9 - Connection diagram
Connect the power supply cable to the device. Depending on the provided sources, the device could be
powered from grounded power outlet 220/110VAC, 50/60Hz, or from -48...-60VDC power supply. To connect the
device to 220VAC electrical network, use the cable provided with the delivery package. To connect the device to DC
power supply, use the cable with cross-section not less than 1mm
2
.
When connecting to the 220V AC mains it is necessary to mount devices for electrical overshoot
protection.
Ensure that all cables are undamaged and securely connected.
Turn the device on and check the front panel LEDs to make sure the terminal is in normal operating
conditions (Section 0