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Payne Engineering 18TBP SCR Power Controls

Payne Engineering Company
Scott Depot, WV
Tel: (304)757-7353, Fax: (304)757-7305
e-mail: info@PaynEng.com
www.PaynEng.com

We are an authorized distributor for Payne Engineering.

• Description: Variable-Voltage Power Control
• Product Range: 120-240 VAC, 5-15 amps.
• Application: Constant Resistance Loads

FEATURES

• All Solid-State Construction

• Short Circuit Protection

• Integral Heatsink Chassis

• No Thermal Derating

TYPICAL APPLICATIONS

• Replace Variable Transformers

• Electric Heater Control

• Light Dimming

• Hot-Wire Cutting

• Heat Sealing and Packaging

• Plastic Molding and Extruding

• Food Preparation Equipment

Model 18TBP controls provide infinitely variable control of single-phase a.c. voltage to resistive heating elements. These controls are solid-state replacements for variable transformers, mercury relays, saturable core reactors, and electromechanical contactors. Power Triacs replace contacts and brushes to control electric power without moving parts, and, when operated within their stated ratings for current, voltage, and temperature, have no known MTBF or life expectancy rating.

PANEL- OR CHASSIS-MOUNT Model 18TBP controls are compact, lightweight packages that employ single hole mounting to panels and enclosure doors, utilize an electrically isolated heatsink chassis.

Dimensions: 2.5" x 2.5" x 2"
Open Chassis Dimensions: 3.2" x 2.5" x 2.5"

EXCLUSIVE ADVANCED TECHNOLOGY:
Three Pillars Of Protection

Model 18TBP controls incorporate exclusive design features to protect power semiconductor components against damage. "2 millisecond" fuses protect against short-circuit damage; an R-C snubber network protects against dv/dt failure; an integral heatsink chassis allows continuous operation in ambients to 50⁰C with no derating.

SPECIFICATIONS

• Power Circuit: power Triac with parallel R-C circuit for dv/dt protection and current-clamping 2 millisecond fuse for short-circuit protection.

• Control Circuit: R-C network with variable-resistance potentiometer adjusts firing capacitor into bilateral diode connected to power Triac gate for stable, full-range control.

• Mains Frequency:50/60 Hz.

• Output Voltage: 0-95% of input. Overall Efficiency: 99%.

• Power Loss: approximately 1.5 watts/amp.

• Voltage Drop Across Power Circuit at 100% Output: 1-2 volts maximum/phase.

• Control Input: manual control via variable potentiometer.

• Control Power: 1 watt.

• Fuse Protection: 2 millisecond I ²t fuses are factory tested and coordinated with all power semiconductors, considering:

• a. fuse element melt time tmelt;
  b. peak melt current Imelt;
  c. arc quench time tarc;
  d. peak arc current Iarc.

• Ambient Temperature Range: -10 to +50⁰C.

• Terminal Connections: Bakelite or thermoplastic blocks.

SIZING CONSIDERATIONS
Model 18TBP controls are rated for use with constant resistance loads. Size units by actual load current, not kW.
1> Always use maximum possible load current for sizing purposes
2> The amp rating is determined by the fuse. Current draw must not exceed the fuse rating at any time.
3> Rated voltage of connected load should match control input voltage.

SIZING EXAMPLE
Application: single-phase, 800 watt nichrome heating element; input voltage 120 VAC, 60 Hz.
Model Number Selection:

a. Triac-based variable-voltage: 18TB
b. Panel-mount: P
c. 120 VAC input: -1-
d. Amp rating, calculated as follows:
800/120=6.66 amps
Since 6.66<10, amp rating: 10 
Model Number: 18TBP-1-10.

WHEN ORDERING, SPECIFY:

· Model Number
· InputVoltage
· Load Specifications

Description: Single Phase, Phase Angle Control, using power TRIACs. 
Application: Variable Voltage Control of Constant Resistance Loads.

Payne 18TBP-1-15: R_L (Ohms) Minimum Load Resistance = 8 (For resistive loads a minimum load resistance R_L is always implied by the voltage and the current rating of your power control.  Dividing the maximum output voltage (i.e. the input voltage) by the current rating will give you this value.  Ohm's Law, E=I*R)

Payne 18TBP-2-15: R_L (Ohms) Minimum Load Resistance = 16 (For resistive loads a minimum load resistance R_L is always implied by the voltage and the current rating of your power control.  Dividing the maximum output voltage (i.e. the input voltage) by the current rating will give you this value.  Ohm's Law, E=I*R)

NOTE-1 Model 18TBP controls are designed for panel (door) mounting.
NOTE-3 These controls use power triacs, which may "slave" when used on lines derived from three phase mains. Recommend that these units only be used on single phase supplies.

Payne Product Information Sheet

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Item ID	Catalog #	Description	Click "Select" below to see our price and actual real-time quantity in stock
PAYNE10001	18TBP-1-15	Payne Engineering 120V Solid State Variable Temperature Power Controller. 120 VAC INPUT, 0-118 VAC OUTPUT, 50/60Hz
PAYNE10002	18TBP-2-15	Payne Engineering Solid State Variable Temperature Power Controller. 240 VAC INPUT, 0-235 VAC OUTPUT, 50/60Hz (ALSO FOR 220/230 VAC INPUT)

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