DSPM Defender 3 - Chapter 1 Introduction; Section 1.1. General

1. INTRODUCTION
1.1. GENERAL
The principles of operation described herein are applicable to all models. The DSPM, Inc. Three Phase Emergency Lighting
Inverters are manufactured to provide critical power for lighting during a power outage. The Three Phase Inverter meets or
exceeds the life safety codes of UL924 and UL1778. These codes were established to allow the emergency lighting inverters
to provide critical power to the lighting circuits during a power failure. The emergency lighting inverter will then provide power
for 90 minutes that will allow safe and orderly evacuation from the facility.
The product is an advanced Emergency Lighting Inverter System based on Intelligent Three Phase Inverterprocessor Control.
The Emergency Lighting Inverter System is an intelligent protector and provides pure, reliable AC power to the emergency
loads – protecting them from utility power blackouts, swells, sags, surges and interference. All types of lamps are supported
by our lighting inverter.
Under normal power conditions, this design enables the system to adjust and lter power uctuations continuously and auto-
matically. In the event of a power failure, it can immediately provide back-up power from the batteries without any interruption.
When the utility power is connected or reconnected, the charger will automatically recharge the batteries.
When input power to the Three Phase Inverter is lost during a power outage, the system will automatically draw power from its
internal battery supply without any interruption. The critical load will receive only clean sine wave power. The internal VRLA
(valve regulated lead-acid), maintenance-free batteries provide 90 minutes of backup power.
Upon restoration of input power, the Three Phase Inverter automatically resumes normal operation, and immediately begins
to recharge the batteries. The Three Phase Inverter has an internal bypass circuit, which maintains the power to the load in
case of internal UPS failure.
The Advanced Battery Management system in this unit uses a Digital Signal Processing/Pulse-Width Modulation (DSP/PWM)
Smart Battery Monitoring System for managing the system batteries. The DSP/PWM Smart Battery Monitoring System is
temperature compensated resulting in maintaining maximum runtime and battery life. The Three Phase Inverterprocessor
controls recharge and the DSP/PWM offer overcharge protection.
The Three Phase Emergency Lighting Inverter incorporates double-conversion technology that provides perfect protection
specically for Egress Lighting for facilities. It is designed to provide continuous and clean electrical power to a critical load.
The load is powered by the inverter, which receives its power from the building source. In the event of an input power failure,
the UPS will supply power to the critical load for the specied battery time.
The inverter uses of a double-conversion principle eliminates all sources of unwanted power disturbances. A rectier converts
the alternating current from the building source to Direct Current (DC). This DC charges the batteries and powers the inverter.
With the basic DC voltage, the inverter generates a sinusoidal alternating current (AC) voltage, which continuously supplies
the load. In times of power outrages, the 90-minute backup time that come standard in our units keep the load energized.
If the input power is not restored promptly, backup power from the UPS battery permits the orderly shutdown of equipment
supported by the UPS. The UPS is simple to start up, operate and maintain.
The Three Phase Inverter is a PWM inverter available in output rating of 3—150 kVA. All models have external batteries
cabinet (s) in which the batteries are housed. It is listed for compliance to UL1778, UL924, UL924A and CSA107.1 standards.
The Three Phase Inverter is available with an input or output voltages of 208, 240, 208Y/277, or 480Y/277 VAC, three phase.
Title: Micro
Doc No.: 018-1000-02
Description: Emergency Lighting Inverter User’s Manual Date: 07/26/2016
Rev: NR
1.877.DSPM.POWERPhone : 1.877.377.6769-
909.930.3335Fax:
www.dspmanufacturing.com
Website:
techsupport@dspmanufacturing.com
E-Mail:
12
Title: Three Phase 208 or 208Y/120Vac
Doc No.: 018-6000-00
Description: Emergency Lighting Inverter User’s Manual
Rev: NR
Date: 08/12/2022
Phone :
Website:
E-Mail:
Fax:
1.877.DSPM.POWER-1.877.377.6769
1.877.DSPM.POWER-1.877.377.6769
www.dspmanufacturing.com
techsupport@dspmanufacturing.com