Nautel NV20LT, Руководство по установке

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NV20LT/NV15LT INSTALLATION MANUAL CONNECTING AC POWER
PAGE 2.5.2 VERSION 4.0 2018-02-26
8. With the main ac power cables near terminal block TB1, cut each wire to the required length and
remove 1.9 cm (3/4 in.) of insulation from the end of each conductor.
9. Connect the main ac power source as follows:
NOTE
: The following tools are required for installation (user provided): 3/16-inch, 1/4-inch hex Allen
keys and a suitable torque wrench to tighten ac input wiring.
 For THREE-PHASE AC POWER SOURCES, connect the three ac line inputs to terminals 1A ( L1 ),
2A ( L2 ) and 3A ( L3 ) of terminal block TB1. Connect the ac neutral (as required, such as with ac
power source voltages between 303 and 459 V ac) to terminal 4A ( N ). Connect the ac ground
to terminal 5A. Secure all wires in their respective terminals.
 For SINGLE-PHASE AC POWER SOURCES (European/Asian standards), connect the ac line and
neutral inputs to terminals 1A (
L1 ) and 2A ( L2/N ) respectively. Connect the ac ground to
terminal 5A. Secure all wires in their respective terminals.
 For SINGLE-PHASE AC POWER SOURCES (North American standards), connect the two 110 V
ac lines (neutral not required) to terminals 1A (
L1 ) and 2A ( L2/N ). Connect the ac ground to
terminal 5A. Secure all wires in their respective terminals.
 Torque securing hardware on TB1-1 through TB1-4 to 31.1 N-m (275in-lbs) using a user-
supplied torque wrench with a 1/4 inch hex bit.Torque securing hardware on TB1-5 (ground)
to 13.6 N-m (120 in-lbs) using a user-supplied torque wrench with a 3/16 inch hex bit.
 Re-install the rear cover on the ac entry box (four M4 screws), ensuring the bonding (ground
wire) is not pinched.