Current transducer

Product catalog summary

Overview: The Model 278 AC Current Transducer is designed to convert AC current input into a proportional DC current output. It features a linear transformer input coupled with a solid-state output amplifier and is powered by either a 115 VAC or 230 VAC source. The device is socket-mounted for ease of use.

Applications: The transducer is suitable for motor and power control, supervisory data acquisition, load monitoring, feedback control, and energy management. It is available in two configurations with a 4-20 mA output and a 0-10 VDC output option on the Model 2780.

Key Features:

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

Specifications:

Supply Voltage: 115VAC or 230VAC at 50/60 Hz
Input Current: 0-5 amps
Input Frequencies: 25-400 Hz
Output: 4-20 mA with a maximum load of 500 ohms
Output Accuracy: 2% at 77°F
Response Time: 800 msec from 0-99%
Overload Withstand: 2 times rated output continuously, 10 times rated input for 1 second
Operating Temperature: -40° to +131°F
Humidity Tolerance: 0-97% without condensation
Enclosure Material: ABS plastic
Mounting: 8-pin socket (order separately)
Weight: 9.5 oz.
Agency Approvals: UL Recognized in US/Canada

Installation: Requires an 8-pin mounting socket, such as the Time Mark Model 51X120. Proper wiring connections must be made as per the base connecting diagram. In high humidity or contaminated areas, apply silicon grease to prevent moisture ingress.

Troubleshooting: Ensure correct voltage levels and check all fuses and wiring connections if the device fails to operate. Contact Time Mark for assistance if issues persist.

Warranty: The Model 278 is covered by a five-year unconditional warranty against defects in materials and workmanship. Repair or replacement is offered free of charge within this period.

Safety Note: Potentially hazardous voltages are present at the terminals. Ensure all electrical power is removed when connecting or disconnecting wiring. Installation and servicing should be performed by qualified personnel.

Catalog excerpts

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 > Output @ rated input 4-20ma 4-20ma > Maximum load 500 ohms 500 ohms Output accuracy 2% at 77F Output ripple 1% max at nominal frequency > 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 > Operating temperature -40а to +131F Humidity tolerance 0-97% w/o condensation > Enclosure material ABS plastic Mounting 8-pin socket (*order separately) Weight 9.5 oz. > Agency Approvals UL Recognized-US/Canada *Order 8-pin socket number 51X120 > 12/02 Щ 2002 > TIME MARK CORPORATION TIME MARK is a division of size="-2">

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POTENTIALLY HAZARDOUS VOLTAGES ARE PRESENT AT THE TERMINALS OF THE MODEL 278.ALL ELECTRICAL POWER SHOULD BE REMOVED WHEN CONNECTING OR DISCONNECTING WIRING.THIS DEVICE SHOULD BE INSTALLED AND SERVICED BY QUALIFIED PERSONNEL. > The Model 278 AC Current Transducer requires an 8-pin mounting socket, such as the Time Mark Model 51X120. > CT-Model 276-xxx The base connecting diagram on the unit shows the pin connection numbers for the 115 volt power, the AC Current input, and the DC Current Out. > 23 See the Typical Application diagram ). Connect the appropriate wiring to the socket as required (...

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Current transducer

Current transducer

Catalog excerpts

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