YOKOGAWA TB830D, Руководство пользователя, Страница: 24 / 85

<2. INSTALLATION, PIPING, AND WIRING>
2-11
IM 12B01B30-02EN 1st Edition : Mar. 08, 2023-00
2.2.4 Power supply cable (E)
If Terminal box A or Terminal box B is included, wire it to the Terminal box. If there is no Terminal
box but a Relay box is attached, wire to the Relay box. Otherwise, wire to TB830D.
Refer to Figure 2.6, Figure 2.7, Figure 2.8, and Figure 2.9, Figure 2.11, Figure 2.12, and Figure
2.13 for wiring.
Supply a power whose voltages and frequencies conform to the specifications. In addition,
grounding wiring must be made to prevent electric shock and to prevent the device from being
affected by noise. Cables for power supply and grounding must be provided by the customer.
Table 2.1 Power supply cable Specifications
Nominal Voltage 300 V or more
Nominal temperature 75°C or higher
Number of cores, wire diameter 3
L, N, G:0.75 – 2.5 mm
2
(AWG18 – 14)
Outer diameter of sheath Ø6.5 – Ø12.5
Cable termination Strip the outer sheath of 80 mm, and provide the termination.
L, N: M3 Round terminal
G: M4 Round terminal
The tester does not have a power supply switch. The power supply line must be equipped with a
double switch. Grounding wiring shall satisfy Class D (grounding resistance: 100 Ω or less). M3
the tightening torque for screws (L and N) is 0.6 N·m, and that for M4 screws (G) is 1.4 N·m.
WARNING
• Install an external switch or breaker on the power supply of TB830D.
•
Use external switches or breakers that conform to nominal 5A, IEC 60947-1 or IEC 60947-3.
• Yokogawa recommends installing the external power supply switch, circuit breaker, and
TB830D all in the same location.
• The external switch or breaker should be installed within reach of the operator and marked
so that the operator can easily find the power-supply switch of TB830D.
• Fix securely onto constructions or walls the wire cables of the power supply by using a cable
rack, conduit, or vinyl band. If the cable is pulled out of the terminal, an electric shock may
result.
WARNING
• Use cables with heat resistance of 75°C or higher for wiring.
• The wiring must meet the IP65 or higher. The four screws of the detector cover are tightened
to 1.5 N·m.
• Use a cable that conforms to the UL2556VW-1 or equivalent standards for the power supply
cable.