Power Supply Module (Psm); Introduction; Design; Technical Data - ABB Relion 670 Series Technical Reference Manual

Section 17
IED hardware
17.2.5
17.2.5.1
17.2.5.2
17.2.5.3
628

Power supply module (PSM)

Introduction

The power supply module is used to provide the correct internal voltages and full
isolation between the terminal and the battery system. An internal fail alarm output
is available.

Design

There are two types of the power supply module. They are designed for different
DC input voltage ranges see table 449. The power supply module contains a built-
in, self-regulated DC/DC converter that provides full isolation between the
terminal and the external battery system.
Block diagram
Power
supply
Filter
Supervision
IEC99000516 V1 EN
Figure 298: PSM Block diagram.

Technical data

Table 449: PSM - Power supply module
Quantity
Auxiliary dc voltage, EL (input)
Power consumption
Auxiliary DC power in-rush
99000516.vsd
Rated value
EL = (24 - 60) V
EL = (90 - 250) V
50 W typically
< 5 A during 0.1 s
1MRK 505 208-UEN B
Nominal range
EL ± 20%
EL ± 20%
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