Eurotherm 7000 Series, Руководство пользователя

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7300A user Manual 2-7
Installation
2.4. POWER CONNECTIONS
Rating Terminal capacity Torque Stripping length
A mm 2 AWG Nm mm
16 to 25 2.5 to 6 13 to 9 1.2 13
40 to 63 6 to 16 9 to 5 1.8 13
80 to 100 16 to 35 5 to 2 3.8 20
16,4 (or 28,8)
125 50 to 120 0 M10 nut ø 10 (or ø 12)
160 70 to 120 00 to attach eyelet
and terminal
2.4.1. General (Ratings from 16 A to 160 A)
7300A power thyristor units comprise three channels controlled by thyristors.
Terminals 1/L1, 3/L2 and 5/L3 must be wired to the three-phase supply network.
Terminals 2/T1, 4/T2 and 6/T3 must be wired to the three-phase load.
The protective earth terminal PE (marked with the earth symbol) must be wired to the
protective earth (see section ‘Safety during installation’).
Table 2-2 Power connection details for ratings from 16 A to 160 A
Conductor cross-sections should comply with IEC 60943.
Use at 75°C min.copper wire only
2.4.3. Three-phase load wiring schemes
Power connections to the thyristor unit depend on the load configuration scheme.
The following four configuration schemes may be used for three-phase loads:
• star without neutral (3 connection wires, code 3S), figure 2-7
• star with neutral (4 connection wires, code 4S), figure 2-8
• closed delta (3 connection wires, code 3D), figure 2-9
• open delta (6 connection wires, code 6D), figure 2-10
2.4.2. Power connection details