14
2
INTRODUCTION
2.3 - ABBREVIATIONS
USED
HMI
- Human machine interface ( display)
HMI-3P -
Display interface - Linked via parallel
cable
RLX
-
Relay output No X
DIX
-
Digital input No X
I
N
-
Soft-Starter nominal output current
U
N
-
Rated mains voltage
LED
-
Light Emitting Diode
2.4 - ABOUT THE
SSW-03 PLUS
The SSW-03 Plus series is a totally microprocessor controlled
Soft-Starter series which controls the starting current of three-
phase induction motors. In this way mechanical inmpacts on
the load and current peaks on the supply network are
prevented.
2.4.1 - Introduction
This series includes models from 120 to 1400A, being
supplied from 220V, 230V, 240V, 380V, 400V, 415V, 440V,
460V, 480V, 525V or 575V. (The available types are listed in
Section 8).
The models up to 205A are fitted with forced cooling and
isolated heatsink (thyristor-thyristor modules). The models
from 255A up to 1400A have forced cooling and energized
heatsink. (Disc thyristors).
The electronic control circuit uses a 16 bit microprocessor with
high performance, allowing settings and displaying by means
of the interface ( display) of all needed parameters.
Depending on the power, this series (SSW-03 Plus) has 8
different construction forms, as shown in Figure 2.1.
