top banner www.iotaengineering.com
Reference Tools

IIS3P

3-Phase Emergency Inverter Systems

Description
The IOTA IIS3P Series Inverter Systems are UL Listed 3-phase sine wave output inverters designed to provide power to designated emergency lighting fixtures in the event of a loss of normal power. In a power loss situation, the IOTA IIS3P Series will supply 4.8KVA to 50KVA of emergency power from the battery supply at 2ms transfer time. The IOTA IIS3P Series works in conjunction with any lighting load type and is capable for running normally-on or normally-off designated circuits in the emergency mode. The IIS3P Series is ideal for providing emergency power to extensive 120V, 208V, 277V, or 480V lighting arrangements that utilize multiple lamp and fixture types. The IIS3P Series conducts monthly and annual tests for operation readiness and logs the test results for reference as needed. The IIS3P Series features a durable front-access NEMA Type 1 steel cabinet design and is backed with a standard 1-year warranty.
Specifications

Input Voltage

120/208VAC or 277/480VAC 3-Phase 4-wire
(Wye configuration)

Output Voltage

120/208VAC or 277/480VAC 3-Phase
(Wye or Delta configuration)

Frequency

60Hz*

Output Power

4.8kVA - 50.0kVA

Transfer Time

2 milliseconds

Emergency Operation

90 minutes

Load Power Factor Range

.5 lagging to .5 leading

THD (input/output)

<10% / <3%

Input Power Walk-in

Limiting inrush current to <125%,
10 times for 1 line cycle

Synchronizing Slew Rate

1Hz per second nominal

System Short Circuit

65 KAIC

Static Voltage

+/- 4% (Load current change)
+/- 4% (Battery discharge)

Dynamic Voltage

+/- 3% (+/- 25% load step change)
+/- 6% (+/- 50% load step change)
recovery within 3 cycles

Inverter Overload Threshold

280% for 12 line cycles, 115% for 10 minutes

Crest Factor

2.8

Operating Temp (Inverter)

0° to 40° C

Operating Temp (Battery)

20° to 30° C

Storage Temp (electronics only)

-20° to 70° C

Relative Humidity

< 95%

Battery

Maintenance-free Valve Regulated Lead Acid (VRLA)

Audible Noise (standby mode)

45 dba @ 1m

Certifications

UL 924 Listed
find the UL Mark on this product

*Input +/- 3%, Output in emergency +/- 0.05Hz

Advantages and Features

Product Advantages

  • 3-Phase emergency system with exceptional 97% power efficiency
  • Fast 2 millisecond transfer time allows for uninterrupted operation of all lighting load types
  • Provides full light output in the emergency mode
  • Conducts required monthly and annual tests for operational readiness and logs test, event, and alarm data

Features

  • PWM/IGBT inverter design for optimal switching speed
  • Micro-processor controlled, temperature compensating charger
  • 120/208 or 277/480 Voltage Options
  • Valve Regulated Lead Acid (VRLA) batteries provide long life and are maintenance free
  • Low Battery Voltage Disconnect protects batteries against deep discharge
  • Includes Input Circuit Breaker and Battery Circuit Breaker (24.0KV and above) or Fuse (4.8KVA to 16.7KVA) Protection
  • Output Circuit Breaker options available
  • User Programmable / Password Protected Interface
  • High-Contrast LCD display screen
  • Includes RS232 Serial Communications port
  • Durable steel cabinet design with white finish
  • Forced air cooling only while in the emergency mode with no filter requirement
  • Meets or exceeds OSHA emergency light and power requirements, NFPA70, NFPA101, NFPA111, UBC, and SBCCI
  • Covered by IOTA’s standard 1-Year Warranty on all electronic components and pro-rated warranty on batteries
  • Factory Startup and Training available