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PoweRide RTD - Batteryless Ride Thru Device

US Patent 6,166,531

SAG-"A short duration voltage decrease."
This three-letter word is the culprit that finds the "weak links" in the automated process control systems of today's modern industrial operations
-causing-
Lockups Shutdowns Scrap & Rework Damaged Power Supplies/Control Boards Defective End Products Machine Malfunctions Slow Production

99% of all plant interruptions are the result of voltage sags which last less than two tenths of a second. Your lights don't have to flicker for your machine process control unit to error out or fail.

Click on the Model of your Choice for more details...
PoweRide RTD (Ride-Through-Device)

A simple, passive product using two phases of a three-phase supply as input and a single-phase output. If one phase in interrupted, you still have clean constant power out of the RTD....Even if the remaining phase drops by a third.

This combination works perfectly since the heavy (motor, pump, conveyor, etc.) loads are not normally affected by power anomalies. So, a small RTD is only used to keep continuous single-phase power going to the more sensitive process controls.

Batteryless Ideal for High Ambient Conditions (up to 50° C)
Maintenance-Free Easy Installation
Surge Suppression Power Conditioning
Overload Protection Isolated Power
No Electronics  
How it works...
Power Anomaly
Result
Loss of Phase A Output remains constant
Loss of Phase B Output remains constant
Loss of Phase C Output remains constant
Loss of Phase A and B -
33% sag on remaining phase
Output remains constant
Loss of Phase B and C -
33% sag on remaining phase
Output remains constant
Loss of Phase A and C Output goes to 0
Loss of A and 33% Sag on C Output remains constant
Loss of C and 33% Sag on A Output remains constant
37% Sag on A and C Output remains constant
1. Pick your two most trouble-free phases to feed the RTD Input 2. Your Process Controls will receive constant, conditioned single phase power from the RTD output
EVEN WHEN: One of the two input phases is lost AND the remaining phase drops by 33%.
OR Both of the input phases experience a 33% drop in voltage

YOUR LOW-COST SOLUTION to "bulletproof" process controls normally susceptible to power variations which can bring down an entire system...and it does it without batteries, electronics, static switches or an inverter!

Programmable Logic Controller (PLCs) Graphic Interface Systems (GUI) Process Upsets
Discrete Output (DO) Susceptibility Relay Control Circuitry False Negative Sensing
Injection Molding Machines CNC Machines Compressor Controls
Gas Valves HVAC Controllers Agitators
Pumps Cooling Tower Fans Elevator Drive Controllers
Chiller Controls Motor Control Centers Mixers
Batch Weighing Furnaces Batching Systems
Crushers Conveyors Robotic Welding Aplications
Photo Eye Emergency Stop Circuits (ESTOP) High Intensity Discharge Lighting (HID) Auxiliary Contact Applications
DC Power Supplies Assembly Line Controls Emergency Off Circuits (EMO)
Paint Booth Controls Misinterpretation of IO Signals    
"Ice Cube" Relays Ready Circuit Kicks Machine Off    

Over 60% of voltage sags involve only one phase. Two phases rarely sag at the same time
What this means is with an RTD your process controls will hardly ever see any power disturbances (short of a complete three-phase power loss). Processes stay running during otherwise costly power variations.
Easy Installation
The RTD is wired in front of the existing control transformer in the machine. Since the RTD is only protecting the process controls, a small 1 kVA model is normally sufficient. No need to oversize to accommodate heavy load inrush current demands. Model Selection? Simply pick your voltage input/output & load.
Power Conditioning
Unsurpassed protection from overvoltage spikes and surges, brownouts and transient noise. Primary and Secondary are completely isolated, preventing noise from traveling back and forth either way.

Performance of PoweRide RTD and other typical Ride-Through Technologies
Technology
Sag Ride-through
Two Second Interruption
Ride-through
No Batteries
to Maintain
Useful for
Programmable
Controllers
Useful for Motor
Starters
Useful for Estop
Circuits
Use for Control Relays
Overall Score
0=Lowest
7-Highest
UPS
Yes
Yes
No
Yes
No
No
No
3
Batteryless UPS
Yes
Yes
Yes
Yes
Yes
No
No
5
Constant Voltage Transformer
Yes
No
Yes
Yes
Yes
Yes
Yes
6
Coil Hold in Device
Yes
No
Yes
No
Yes
Yes
Yes
5
PoweRide RTD
Yes
Yes
Yes
Yes
Yes
Yes
Yes
7
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