User's Manual

Wiring Connections and Supply

4-2 Power Supply TRM95 Installation and Connection

Safety Please adhere to the following safety precautions:

1. Only authorized personnel are qualified to install and repair the Power Supply unit.

Caution To reduce the risk of an electrical shock, disconnect the AC main supply before removing the unit’s

cover.

2. Use only approved (CSA,UL, IEC) fuses, size 5x20mm, Type “T” (slow-blow), with

appropriate rating (1A for 120Vac, or 0.5A for 230Vac). The correct fuse rating is marked on

the front panel of the Power Supply unit.

3. Ensure that the Power Supply unit is properly grounded. Always connect the unit to the 3-wire

(with grounding) power systems.

4. Ensure that no water or foreign objects get inside the unit.

Wiring Connections and Supply

For access inside the equipment for connection, first unscrew the two screws that secure the cover.

Remove the screws and lift the cover from the chassis.

Note To completely detach the cover, you must also remove the cover’s ground connection. Remember

the ground connections must be in place when the unit is operating normally.

All unused knockout-punch holes (front and back panels) must be plugged with plugs or similar

stoppers. Lyngsoe recommends using the Hole Plug PG11 (P/N 400617) with a Polyamid Nut (P/N

400645). You have to order these parts separately.

You must secure all cables passing through the front or back panel with cable grips or connectors

(these are not provided). The connectors must match the conduit type used to protect the cable

outside the Power Supply unit. For more information on these parts, contact Lyngsoe Industries.

For all interconnections (power line, equipment), Lyngsoe recommends using cable type SJT, PVC

jacketed, 3-conductors with a minimum gauge of 16 AWG (0.75 mm

- conductor nominal cross-

sectional area). Lyngsoe recommends BELDEN cable type 19353.

An external disconnecting device will be provided as part of the building’s installation. The

disconnecting device will have an appropriate rating for the AC power line voltage (minimum 1A

for 120Vac or 0.5A for 230Vac). Installation of the external wiring will comply with the national

wiring rules (code) applicable to the site.