Chapter 1 Introduction; Overview - Siemens Sm@rt DAS User Manual

Chapter 1
Introduction

Overview

Sm@rt Dynamic Arc-Flash Sentry (DAS): Sm@rt DAS is a
solution that allows users the ability to automatically toggle
between nominal trip settings and a predefined set of lower
trip settings (also known as a maintenance mode) used when
facility personnel are nearby the electrical equipment or
within the arc flash boundary. Sm@rt DAS can be activated
by a simple contact, such as a switch so a wide range of
activation devices can be used to enable DAS.
Low-Voltage
Power Breaker
Figure 1.1: Sm@rt DAS Architecture
4
Activation switch
(1 per breaker)
HMI (optional)
Insulated Case
Circuit Breaker
Breaker
The purpose of this manual is to help users develop safe and
efficient procedures for operation and maintenance of the
Sm@rt DAS system. The Sm@rt DAS system is used to control
maintenance mode of VL and WL breakers in Type WL
Switchgear, SB Switchboards, P4 and P5 Panelboards. The
controller switches DAS on/off for a combination of up to 10
VL/WL breakers. For larger systems, multiple controllers will
be used. The Sm@rt DAS controller allows the panel to
respond to triggering of maintenance mode via digital inputs,
MODBUS or HMI commands. The system can be activated over
an HMI without a switch. Additionally, each input has an
output confirming activation of maintenance mode.
Controller
Gateway
Modbus network
Molded Case Molded Case
Circuit Breaker
Indicator lights
(1 per breaker)
Molded Case
Circuit Breaker