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Energy efficiency for electric heat treatment furnaces

Standardized digital thyristor (SCR) power supply cabinet

solutions, designed to replace VRT and analog thyristor

power supplies

Benefits

Installing an EPower™ advanced thyristor (SCR – silicon

controlled rectifier) power supply cabinet solution offers

significant CapEx and OpEx efficiency improvements, compared

to legacy analog designs:

• Typical power factor > 0.9. helps to meet utility suppliers’

power factor limits

• Patented ‘Predictive Load Management’, helps to reduce

demand charge penalties

• Typical energy savings ≈10%, with typical ROI < 2 years

• Helps to achieve a repeatable high performance process

• Condition monitoring for reducing maintenance time and cost

• IIoT ready thanks to multiple communication protocols

• Smaller footprint than a typical analog power supply

Key features

• Standardized turnkey cabinet solution

• Predictive load management strategies

• Hybrid firing modes

• Load monitoring

• Industrial communication protocols

• High efficiency power transformers

• Customization available

• Supported by Eurotherm services and Authorized Solution Provider Network

Features and Benefits

Fast cycle card

• Increases heater life

• Optimizes temperature control

• Allows for higher watt density heaters

Zero cross firing

• Results in minimal electrical noise

Back-to-back SCR design

• Withstands harsh or hostile industrial environments

UL® recognized File #E151484 and #E73741

CSA certified up to 600VAC, File #LR700195

VDE 60950 License #40021401. File #1995500

up to 480VAC, CE – EN 60950 and RoHS

• Meets applications requiring agency approval

Watlow solid state relays (SSR) offer many of the

advantages of solid state power controllers, yet at a

lower cost. Watlow’s extensive knowledge in power

controller design has led to the development of a special

fast cycle input card that enables a SSR to operate

from a standard 4-20mA instrumentation command

signal. Test results have shown that a zero cross SSR

in combination with the fast cycle card promotes better

temperature control and longer heater life than slow

cycle relays. Through a time proportional cycle rate of

one tenth of a second heater life will be extended.

Both low and high voltage models are available from

24 up to 530VAC. All ac output models include

back-to-back Silicon Controlled Rectifiers (SCRs) for a

more rugged design than the traditional triac based SSR.

The internal design allows it to handle high currents

and the harsh electrical environments of heavy industry.

Watlow also offers a switched VDC model for dc heating

applications.

Watlow can provide all the components necessary

for trouble-free operation. This includes two standard

convenience items: A thermal foil to ensure proper

thermal transfer from the relay to the heat sink and

belville washers that ensure the relay is mounted with

sufficient pressure for good heat transfer. Matched

semiconductor fuses and heat sinks are available to

complete the power switching package.

Features and Benefits

200KA SCCR with proper fusing

• Minimizes damage in the event of a short circuit

Standard panel mount

• Provides same mount as industry standard 100A MDR

Compact size

• Reduces panel space and cost

Touch-safe terminals

• Increases safety for installer and user

Mercury free

• Assures environmental safety

Faster switching with solid state

• Saves energy and extends heater life

UL® 508 listed, C-UL®, RoHS and CE with filter

• Meets applications requiring agency approval

• Reduces end product documentation

Back-to-back SCR design

• Ensures a rugged design

On-board semiconductor fusing

• Provides quick access with no extra mounting

necessary

Features and Benefits

200KA SCCR with proper fusing

• Minimizes damage in the event of a short circuit

DIN-rail, panel and thru-wall mounting

• Provides versatility and quick, low-cost installation

Compact size

• Reduces panel space and cost

Touch-safe terminals

• Increases safety for installer and user

One- and three-phase power

• Can be used in a variety of applications

Open heater/shorted output alarm

• Notifies the user in case of an open heater or

shorted output

Mercury free

• Assures environmental safety

Faster switching with solid state

• Saves energy and extends heater life

UL® 508 listed, C-UL®, RoHS and CE with filter

• Meets applications requiring agency approval

• Reduces end product documentation cost

System solution component

• Provides single source thermal loop

Back-to-back SCR design

• Ensures a rugged design

DIN-A-MITE® C

The DIN-A-MITE® C silicon controlled rectifier (SCR)

power controller provides a low cost, compact and

versatile solid state option for controlling electric heat.

This controller is designed and manufactured with the

quality features expected from Watlow. DIN-rail/panel

mount and through-wall mount versions are available.

Features include single-phase, three-phase/two leg, and

three-phase/three leg, 24-600VAC operation. Current

switching capabilities range from 30 to 80A depending

on the model ordered.

Variable time-base, linear voltage and current process

control or VAC/VDC input contactor versions are

available. Single-phase, phase angle firing and current

limiting are also available. All options are model number

dependent and factory configurable. This power

controller includes 200KA short circuit current rating

(SCCR) tested up to 480VAC to minimize damage in the

event of a short circuit when used with required fusing.

Watlow’s DIN-A-MITE C is available through Watlow

SELECT®, a program that enables you to quickly

identify, configure and receive your thermal products

faster and easier than ever before. With SELECT, you

use a variety of tools to guide your decision, configure

products for an exact fit and quickly receive your order.

Features and Benefits

200KA SCCR with proper fusing

• Minimizes damage in the event of a short circuit

DIN-rail and panel mounting

• Provides versatility and quick, low-cost installation

Compact size

• Reduces panel space and cost

Touch-safe terminals

• Increases safety for installer and user

Single- and three-phase power

• Permits use in a variety of applications

Mercury free

• Assures environmental safety

Faster switching with solid state

• Saves energy and extends heater life

UL® 508 listed, C-UL®, RoHS and CE with filter

• Meets applications requiring agency approval

• Reduces end product documentation cost

Back-to-back SCR design

• Ensures a rugged design

Shorted output alarm (optional)

• Simplifies troubleshooting and reduces downtime

The DIN-A-MITE® B power controller provides a

low-cost, highly compact and versatile solid state option

for controlling electric heat. This controller is designed

and manufactured with the quality features expected from

Watlow. DIN-rail and panel mounting are standard on

every control. There is no need to worry about mercury,

the DIN-A-MITE controller is mercury free.

Features include single-phase and three-phase zero

cross switching up to 40 and 22 amperes, respectively,

at 600VAC (see rating curve). A unique, integrated

design removes the guesswork associated with selecting

a proper heat sink and adequate terminations for the

application.

Variable time-base, 4-20mA process control and

VAC/VDC input contactor versions are available.

A shorted output alarm option is also available.

All options are model number dependent and factory

configurable. This power controller includes 200KA short

circuit current rating (SCCR) tested up to 480VAC to

minimize damage in the event of a short circuit when

used with required fusing.

Watlow’s DIN-A-MITE B is available through Watlow

SELECT®, a program that enables you to quickly

identify, configure and receive your thermal products

faster and easier than ever before. With SELECT, you

use a variety of tools to guide your decision, configure

products for an exact fit and quickly receive your order.

Features and Benefits

200KA SCCR with proper fusing

• Minimizes damage in the event of a short circuit

DIN-rail and panel mounting

• Provides versatility and quick, low-cost installation

Compact size

• Reduces panel space and cost

Touch-safe terminals

• Increases safety for installer and user

Mercury free

• Assures environmental safety

Faster switching with solid state

• Saves energy and extends heater life

UL® 508 listed, C-UL®, RoHS and CE with filter

• Meets applications requiring agency approval

• Reduces end product documentation cost

Back-to-back SCR design

• Ensures a rugged design