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 |
Home
PoweRide
RTD - Batteryless
Ride Thru Device