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- High performance switching devices
capable of fast, precise control of the power delivered to the load
- Control power with either phase angle
firing or zero cross variable time base firing
- Accept analog signal units
- Smooth proportional output power from
0 to 100%
- Available in single and three phase
versions
- Options for phase angle firing SCRs
include current limit, current trip, line voltage regulation, soft
start on signal change or lockout, and I2T fusing
- I2T fusing is also available
with zero firing SCRs
- Control input is adjustable to match
all standard temperature and process controllers
- Zero firing SCRs feature a rapi-cycle
control technique, with on-to-on cycle time ranging from 16 to 48ms
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| Silicon
Controlled Rectifiers (SCRs) power controls accept analog signals, unlike
SSCs. They are high performance switching devices capable of fast, precise
control of the power delivered to the load. They control power by either
phase angle firing or zero cross variable time base (burst) firing.
The Phasetronics EP Series of Phase
Angle Silicon Controlled Rectifiers (SCRs) Power Control assures smooth
proportional output power from 0 to 100%. These low-cost, high-quality
controls are offered in single and three phase versions with a variety
of optional features including current limit, current trip, line voltage
regulation, soft start on signal change or lockout, and I2T fusing.
They are ideally suited for all resistive, inductive, and capacitive
loads. The Soft Start feature assures a slow rising output voltage to
prevent saturation of inductive loads. The control input is adjustable
to match all standard temperature and process controllers. The control
signal sensitivity is adjustable by gain and offset potentiometers or
can be controlled from an external potentiometer. MOVs protect the Silicon
Controlled Rectifiers (SCRs) from transient voltages. False firing (dv/dt)
protection is standard. Typical applications include heater control,
and oven and furnace control.
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