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MODEL 278 AC CurrentTransducer

High accuracy, low cost Isolated input and output Socket-mounted, solid-state design Five year unconditional warranty

DESCRIPTION SPECIFICATIONS

The Model 278 AC Current Transducer is designed to accept an AC current input, and provide a proportional DC current output. A linear transformer input is coupled to a solid-state output amplifier. The Model 278 is powered by a 115 VAC or 230 VAC source, and is socket-mounted for ease of use.

MODEL C278 C278-230 Supply voltage 115VAC @ 50/60 Hz 230VAC @ 50/60 Hz Input current 0-5 amps 0-5 amps Input frequencies 25-400 Hz Input burden 0.5VA at 120VAC 60 Hz

Model 278 Current Transducers can be used with computer and programmable controls to provide:

Output @ rated input 4-20ma 4-20ma

- Motor and power control - Supervisory data acquisition - Load monitoring - Feedback control - Energy management

Maximum load 500 ohms 500 ohms Output accuracy 2% at 77°F Output ripple 1% max at nominal frequency

The Model 278 is available in two 4-20 output configurations. A 0-10 VDC output is available on the Model 2780.

Response time 800 msec from 0-99% Overload withstand 2 times rated output-continuous 10 times rated input-1 second Dielectric withstand voltage (isolation) 1500 VRMS input, output, case

DIMENSIONS

Operating temperature -40° to +131°F Humidity tolerance 0-97% w/o condensation

3.25" 1.95"

Enclosure material ABS plastic Mounting 8-pin socket (*order separately) Weight 9.5 oz.

1.95"

Agency Approvals UL Recognized-US/Canada *Order 8-pin socket number 51X120

Telephone: Main - (918) 438-1220 Sales - (800) 862-2875 11440 East Pine Street Tulsa, Oklahoma 74116 Fax: (918) 437-7584 E-mail: sales@time-mark.com Internet: http://www.time-mark.com

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