Three-phase wiring diagrams
Tw o p h a s e control
In this configuration, a prior recognition of the order of the phases must be performed in order
to connect in the following obligatory order:
- 451 series (Slave) on phase 1
- 455 or 461 series (Master) on phase 2
- direct line on phase 3.
If the order of the phases is incorrect, the thyristor firing will be incorrect and the load voltage
between 2 and 3 phases will have a value slightly greater than the supply voltage
(for example, 405 V for a 380 V supply).
Non-fan-cooled units (INom = 15 to 75 A ) 3 8 0 V between phases.
Terminal 8 of 451
series
only for the PLF option
PLF detection circuit power supply
Analogue
control
sgnal
A Of A Ihree-prwrise toed
(3 wires)
Figure 5.6 Example of wiring diagram in two phase control (Non-fan-cooled Master-Slave).
Voltage between phases 380 V.
Load in star without neutral or in closed delta.
5-8
451-461 User Manual
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com