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Overview: 

The LB-TFPS-180-540-90UI T-Former indoor power supply is a 

pure sine 

wave 

adjustable power supply (180 to 540VA), with the highest-

efficiency, and most reliable technology.  With almost double the lifetime 
of comparable Ferro-Resonant products, it delivers at least 5% energy 
savings compared with standard systems. 

Thanks to its patent- pending 

sine wave stabilizer technology

, the T-

Former's advanced electronic controller automatically monitors the line 
voltage and compensates for any changes, eliminating negative 
Inrush current side effects resulting from utility power recovery. In 
addition, the T-Former operates in complete silence - solving noise 
and vibration problems inherent in existing Ferro-Resonant products. 
T-Former is designed to work at a wide range of temperatures and 
humidity without maintenance, at full power capacity.  100% of Lindsay's 
T-Formers undergo rigorous and repeated quality testing. 

T-Former - High Efficiency Power Supply 

Lower Operating Costs - saves at least 5% energy compared to Ferro-
Resonant power  supplies.

Lower Capital Cost per unit - compared to traditional Ferro-Resonant 
devices 

Longer Life -Unique technology enables almost unlimited lifetime 

No Noise, No Vibration

Slow Start: In-rush Current Protection

Automatic electronic overload protection 

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Summary of Contents for LB-TFPS-180-540-90UI

Page 1: ...T Former Series Stabilized Pure Sine Voltage Technology LB TFPS 180 540 90UI Installation Manual May 2019 Adjustable Power Supply 180 540VA...

Page 2: ...s Page 5 Utility Connection Page 6 Mounting LB TFPS 180 540 90UI Page 7 Connecting Power Cable to T Former AC Output Page 9 Installation and Operation Page 11 Power Supply Functions Page 12 Troublesho...

Page 3: ...r Fig 5 Mounting LB TFPS 180 540 90UI Fig 6 Power Supply Output Connection Fig 7 Output Power Connector Fig 8 90 Output Power Connector Fig 9 Flex Jumper Fig 10 Dip Switch Location Fig 11 Dip Switch A...

Page 4: ...fects resulting from utility power recovery In addition the T Former operates in complete silence solving noise and vibration problems inherent in existing Ferro Resonant products T Former is designed...

Page 5: ...LB TFPS 180 540 90UI T former is its SOFT STARTUP solving the most inherent problem of Ferro based power supplies In Rush Current This innovative solution controls the current level during start up an...

Page 6: ...Basic Block Diagram Figure 2 Block Diagram T Former Power Supply 3...

Page 7: ...that the power supply input voltage configuration matches the standard utility voltage level Verify that the power supply output voltage configuration matches the CATV voltage and load requirements DO...

Page 8: ...Utility Connection 120VAC 15A NEMA 5 15R receptacle 120V 15A 10 Amp circuit breaker installed in service entrance box Figure 4 Service Entrance Circuit Breaker Figure 3 NEMA 5 15R receptacle 5...

Page 9: ...ll or shelf mounted The LB TFPS 180 540 90UI is designed for temperatures of 40 to 60C and can be mounted in an outdoor enclosure The outdoor enclosure should have a plywood backing so that the power...

Page 10: ...nnector at the panel Connection is made quickly and reliably from outside Beryllium copper contact Insure all output connectors are rated for 90VAC continuous 20Amps Continuous Note The length of the...

Page 11: ...8 90 Output Power Connector Bandwidth 0 MHz to 1 GHz Impedance 75 Ohms Return Loss Better than 30 dB to 1 GHz Insertion Loss Less than 0 10 dB to 1 GHz Operating Voltage Rating 90 Volts 60 Hz continu...

Page 12: ...sks and failures Verify current draw on each output port Pick a slow blow fuse 130 higher than output port current draw ie Output port has 3A current draw 3A 130 3 9A replace 8A fuse with a 4A fuse In...

Page 13: ...power manually allows the operator to pay flat rate for the real energy consumed instead of paying for the Power Supply rated power Current Limit 90V DIP Switch Position 3 2 1 2A OFF OFF OFF 3A ON OF...

Page 14: ...ssis Ground 3 Output 90VAC 4 Output Fuse 5 Output Voltage Test Point 6 Test Point Common Port 7 Output Current Test Point 1A 0 1V 8 Output Status LED Power Supply Functions Figure 12 Power Supply Func...

Page 15: ...even at maximum load The Power supply has slow start circuit and overload protection to prevent the most common failure at the network such as inrush current that switches OFF the circuit breaker or b...

Page 16: ...tput Power 180 540 VA adjustable Efficiency 96 25 90 load Mechanical Dimensions HxWxD 10 8 H x 6 4 W x 4 5 D 273H x 163W x 114D mm Weight lb Kg 28 lb 12 9 kg Housing Finish Corrosion protected Epoxy c...

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