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3 PHASE “FAST” TRANSFER CENTRAL INVERTER
  Series Features 3FTS

  • AC Inverter System With Battery Backup
  • 3 Phase, Sine Wave Output
  • On-Line, Zero Transfer Time
  • UL 924 Listed
  • 90% Efficiency
  • 50% Overload Capacity
  • Input Circuit Breaker
  • Internal Component Redundancy

On-Line AC Power Systems For HID, Incandescent & Fluorescent Emergency Lighting Systems

FTS Series Inverters offer solutions to these typical utility power problems

  • Brownouts
  • Undervoltage Conditions
  • ± Voltage Transients less than or equal to 5 µsec.
  • Power Outages <1.5 Hours
  • Overvoltage Conditions
  • Severe Transverse Mode Noise on Power Line
  • Severe ± Voltage Transient less than or equal to 4ms
  • Severe Common Mode Noise on Power Line
  • Power Outages greater than or equal to 1.5 Hours

 

 

 

 

 

 

 

 
  • 90 Minutes Run Time for Uninterruptible Power to Emergency Lighting Circuit
  • Battery Circuit Breaker
  • 3 Battery Types:
    (S ~ Sealed Lead Calcium)
    (L ~ Refillable Lead Acid)
    (N ~ Refillable NiCad)
 
  • Digital Metering
  • 5% THD Linear Load
  • 80 dB transverse mode noise attenuation
  • 120 dB common mode noise attenuation
  • Low input current distortion 6%
  • Front panel access
  • 24 Hour Service Hot Line Label in each unit Access from anywhere in the USA
 
 

System Operation

1

A solid state rectifier/charger transforms the incoming mains into a regulated DC supply charging the battery.
 

 

 

2

A battery is provided to maintain power to the inverter. The battery is fitted with a suitably rated circuit breaker/fuse to provide overload and short circuit protection and also allows isolation from the UPS for maintenance purposes.
 

3

A continuously running pulse width modulated transistorized static inverter transforms the battery energy into a loss distortion, no-break, sine wave, AC voltage to supply the critical load.
 

4

A ferroresonant voltage regulating transformer filters out surges, spikes, electrical noise, lightning spikes, brownouts, and blackouts.
 
 

High Efficiency
On Line / No Break
  Be ready for virtually any emergency with this Uninterruptible Power System. This pulse width modulated inverter is continuously on, utilizing internal transistor redundancy which allows up to 20% of the power switching transistors to fail and still provide “full load output power”. The AC-IN to AC-OUT operating efficiency is typically 90%, well above a typical on line UPS. The internal construction of each cabinet consists of an AC to DC battery charger, DC to AC inverter and energy storage transformer, and either Sealed Lead Calcium, Refillable Lead Acid, or Refillable Nickel Cadmium Batteries.
 

Operational Diagram

 

 

3FTS
Series

 

S
Battery Type
(S ~ Sealed)

 

120/208
Input AC
Line Voltage

 

120/208
Output AC
Voltage

 

90
Battery Run Time

 

-ISO
Options

 

Mechanical Specifications
Model Number
kVA
Rating
Max Util
Input
Current†
System
Efficiency
%
Heat
Loss
BTU's
Inverter Cabinet Dimension
Inverter
Weight
lbs.
(A)
Width
Inches
(B)
Height
Inches
(C)
Depth
Inches
3FTSS-16700-120/208-120/208-90
16.7
60
87
5700
42
70
19
900
3FTSS-22500-120/208-120/208-90
22.5
75
89
7700
42
70
19
900
3FTSS-30000-120/208-120/208-90
30
100
90
10200
42
70
19
1250
3FTSS-37500-120/208-120/208-90
37.5
128
90
13000
42
70
19
1550
3FTSS-50000-120/208-120/208-90
50
170
90
17000
42
70
19
1658

†Amps Per Phase *3rd Cabinet Dimension is 42”W x 5”H x 19”D.
**5th Cabinet Dimension is 42”W x 62”H x 19”D.

If these units are to be used with a motor generator or a non-synchronous transfer switch, please contact the factory with the exact specifications.
 

Mechanical Specifications Continued
Model Number
Battery
VDC
Battery
Ampers
Battery
Run Time
Minutes
Battery Cabinet Dimension
No. of
Battery
Cabs.
Battery
Cabinet
NetWt.
lbs.
(D)
Width
Inches
(E)
Height
Inches
(F)
Depth
Inches
3FTSS-16700-120/208-120/208-90
120
180
90
42
62
19
2
1850
3FTSS-22500-120/208-120/208-90
120
250
90
42
70
19
3*
1850
3FTSS-30000-120/208-120/208-90
120
330
90
42
70
19
3
1850
3FTSS-37500-120/208-120/208-90
120
415
90
42
70
19
4
1850
3FTSS-50000-120/208-120/208-90
120
550
90
42
70
19
5**
1850

†Amps Per Phase *3rd Cabinet Dimension is 42”W x 5”H x 19”D.
**5th Cabinet Dimension is 42”W x 62”H x 19”D.

If these units are to be used with a motor generator or a non-synchronous transfer switch, please contact the factory with the exact specifications.
 

Electrical Specifications
Input
Output
Standard Input Voltage: 120/208 VAC 3-phase, 4-wire, +10%-15%. Other voltages available on request.

Input Power Walk In: 2 cycles, which limits the inrush current from the utility to 125% maximum.

Input Frequency: 60Hz +/- 3%. (50Hz available upon request).

Synchronizing Slew Rate: 1 Hz per second nominal.

Input Lightning Protection: Up to 10,000V, 320 joules, meets IEEE 587.

I/O Noise Reduction: 80dB transverse mode, 120 dB common mode.

Input Current Distortion: 6% at full load nominal line.

Input Circuit Breaker: For complete system protection.

 Standard Output Voltage: 120/208 VAC, 3-phase, 4-wire. Other voltages available on request.

Output Regualtion (Static): Input variations +/- 1%, load current change +/-2%, battery +/-2%.

Output Regulation (Dynamic): +/-3% for a +/-25% load step change. +/-6% for a 50% load step change, recovery within 3 cycles.

Load Power Factor: .75 lag to .9 lead.

Output Frequency: Normally, synchronized to utility, +/-.05% during emergency (50 Hz available upon request)

Output Distortion: 5% THD linear load..

Line to Line Voltage Unbalance: +/-4% for a 30% line to line load unbalance.

Overload: Normal: 150% for 5 min. Emergency: 130% for 5 min.
 

Electrical Specifications Continued
Battery
Physical
Types:
S ~ Sealed Lead Calcium
L ~ Refillable Lead Acid
N ~ Refillable NiCad

Standard Battery: Sealed lead calcium.

Charger: Automatic with internal diagnostic indicators. One LED type indicator for float mode and another for high charge mode.

Recharge Time: 24 Hours to 87.5% charge.

Protection: Auto. low battery voltage disconnect.

Battery Discharge Alarm: Audible indicator of UPS operating in battery mode.

Circuit Breaker: Also used as a battery isolator.

 Relative Humidity: 95% non- condensing.

Operating Temperature: 32°F-104° F. Continuous operation at high or low ambient temperatures may affect battery life and run time.

Metering: Digital indicating input voltage; output AC voltage; output frequency: output AC current; DC battery voltage; DC battery current.

Controls: On/Off key operated switch. System test switch.

Mimic Panel:

  • Utility power on
  • UPS output on
  • Inverter on

Manual Maintenance Bypass switch: Internal to UPS. Used to power load direct from utility.

Battery Circuit Breaker: For overload and short circuit protection and isolation from the UPS for maintenance.

 
 

 

 

 

 

Home Batteries  UPS Technology Emergency Lighting Battery Chargers Factory Links Contact Us Buy Batteries Online

Power Factor Inc.

2526 Manana Dr – Suite 102 – Dallas – Texas – 75220

800-706-7009

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Since 1995

While every precaution has been taken to ensure accuracy and completeness in this literature, Power Factor Inc. assumes no responsibility, and disclaims all liability for damages resulting from use of this information or for any errors or omissions. Specifications subject to change without notice.
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