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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.
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Batteryless
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Ideal for High Ambient Conditions (up to 50° C)
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Maintenance-Free
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Easy Installation
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Surge Suppression
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Power Conditioning
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Overload Protection
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Isolated Power
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No Electronics
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How the Ride Thru Device works...
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Power Anomaly
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Result
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Loss of Phase A
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Output remains constant
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Loss of Phase B
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Output remains constant
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Loss of Phase C
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Output remains constant
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Loss of Phase A and B -
33% sag on remaining phase
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Output remains constant
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Loss of Phase B and C -
33% sag on remaining phase
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Output remains constant
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Loss of Phase A and C
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Output goes to 0
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Loss of A and 33% Sag on C
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Output remains constant
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Loss of C and 33% Sag on A
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Output remains constant
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37% Sag on A and C
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Output remains constant
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1.
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Pick your two most trouble-free phases to feed the RTD Input
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2.
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Your Process Controls will receive constant, conditioned single phase power from the RTD output
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EVEN WHEN: One of the two input phases is lost AND the remaining phase drops by 33%.
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OR Both of the input phases experience a 33% drop in voltage
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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!
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Programmable Logic Controller (PLCs)
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Graphic Interface Systems (GUI)
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Process Upsets
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Discrete Output (DO) Susceptibility
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Relay Control Circuitry
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False Negative Sensing
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Injection Molding Machines
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CNC Machines
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Compressor Controls
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Gas Valves
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HVAC Controllers
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Agitators
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Pumps
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Cooling Tower Fans
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Elevator Drive Controllers
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Chiller Controls
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Motor Control Centers
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Mixers
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Batch Weighing
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Furnaces
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Batching Systems
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Crushers
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Conveyors
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Robotic Welding Aplications
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Photo Eye Emergency Stop Circuits (ESTOP)
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High Intensity Discharge Lighting (HID)
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Auxiliary Contact Applications
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DC Power Supplies
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Assembly Line Controls
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Emergency Off Circuits (EMO)
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Paint Booth Controls
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Misinterpretation of IO Signals
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"Ice Cube" Relays
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Ready Circuit Kicks Machine Off
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Over 60% of voltage sags involve only one phase. Two phases rarely sag at the same time
What this means is with a Ride Thru Device 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.
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Easy Installation
The RTD is wired in front of the existing control transformer in the machine. Since the Ride Thru Device 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.
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Power Conditioning
Unsurpassed protection from over voltage spikes and surges, brownouts and transient noise. Primary and Secondary are completely isolated, preventing noise from traveling back and forth either way.
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Performance of PoweRide RTD and other typical Ride-Through Technologies
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Technology
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Sag Ride-through
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Two Second Interruption
Ride-through
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No Batteries
to Maintain
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Useful for
Programmable
Controllers
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Useful for Motor
Starters
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Useful for Estop
Circuits
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Use for Control Relays
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Overall Score
0=Lowest
7-Highest
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UPS
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Yes
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Yes
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No
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Yes
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No
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No
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No
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3
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Batteryless UPS
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Yes
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Yes
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Yes
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Yes
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Yes
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No
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No
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5
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Constant Voltage Transformer
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Yes
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No
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Yes
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Yes
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Yes
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Yes
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Yes
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6
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Coil Hold in Device
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Yes
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No
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Yes
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No
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Yes
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Yes
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Yes
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5
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PoweRide RTD
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Yes
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Yes
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Yes
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Yes
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Yes
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Yes
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Yes
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7
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