1P1 Series
Single Phase SCR Power Control
Phasetronics Model 1P1 Series of single-phase SCR Power Controllers feature phase angle control to provide smooth proportional output power from 0–100%. Available in load currents from 10 to 600 amperes at line voltages from 120 through 575 volts AC — ideally suited for all resistive, inductive and lamp type loads.
| AC Supply Voltage | 120 – 575 Vac |
| Amp Ratings | 10 to 600A |
| Control Signal | 4-20 mA, 0-10 Vdc |
| Load Types | Resistive, inductive and lamp |
| Soft Start | Standard feature |
Phase Angle Control
Smooth proportional output from 0–100% with pre-engineered standard options.
Soft Start
Built-in soft start feature assures slow-rising output voltage to eliminate current surges.
Lamp Load Capable
Suitable for resistive, inductive, and lamp-type loads in a single product.
Variety of Options
Standard pre-engineered options make 1P1 ideal for system designers and panel builders.
1P1 Series
Technical Specifications
Milliamp Input
4–20 mA, Input Impedance 510 Ω
Manual Control
10 kΩ, 2W potentiometer, linear taper (customer provided)
Output Current Rating
20 to 600 Amps (model dependent)
AC Supply Voltage
120 / 208 / 240 / 380 / 415 / 480 / 575 VAC (+10% / -15%, 50/60 Hz)
Type of Loads
Resistive / Inductive / Lamp
Soft Start — Options B, C, D, E
Set for initial half-second of operation at power on. Field adjustable via potentiometer from 0.25 seconds to 60 seconds. Ramp with DC signal change is factory set for 0.1 seconds (adjustable with capacitor change).
Soft Start — Options KB, KC, KD, KE
Set for initial half-second of operation at power on. Field adjustable via potentiometer from 0.5 seconds to 25 seconds. Ramp with DC signal change is factory set for 0.1 seconds (adjustable with capacitor change).
Soft Start — Options V & T
Set for initial half-second of operation at power on. Field adjustable via potentiometer from 1 second to 50 seconds. Ramp with DC signal change is factory set for 0.1 seconds (adjustable with capacitor change).
Hard Firing Gate Pulse
A combination of high-potential gate pulse and rapid rise time prevents SCR damage due to di/dt stress.
Input Adjustments — Gain
4–20 mA (gain potentiometer) — applies to options B, C, D, E, KB, KC, KD, KE
Input Adjustments — Offset
50% of gain maximum
Regulation — Options B, C, D, E, KB, KC, KD, KE
Load voltage regulation of ±2% over a ±10% line voltage input change.
Regulation — Options V & T
Specific to DC voltage applications — current and/or voltage regulation is 0.75%.
Fusing
Integral I²t fuse protects against short-circuit overloads.
Transient Voltage Suppressor
Integral MOV (Metal Oxide Varistor) protects against high-potential transient voltage.
SCR Peak Inverse Voltage (PIV)
1500V
RC Snubber
RC snubber network prevents false firing due to dv/dt characteristics.
Ambient Temperature
Operating range 0°C to 40°C (32°F to 104°F)