NK TECHNOLOGIES AGT Series Instructions

Specifi cations
Power Supply 24 VDC Nominal (see chart below)
Use Class 2 or power limited supply only
Power Consumption 2 VA
Input Range AGT1: 0-50 mA
AGT2: 0-100 mA
Isolation Voltage Up to 600 VAC (Monitored Circuit)
Frequency Range 40-400 Hz (Monitored Circuit)
Output Signal 4-20 mA loop powered
Output Loading 600 Ω maximum @ 24 VDC
Response Time 600 mS 90% step change
Dimensions 2.5"H x 3.86"W x 1.45"D
(64 x 98 x 37 mm)
Sensing Aperture 0.75" (19 mm) diameter
Case UL94 V-0 Flammability Rated
Environmental -4 to104°F (-20 to 40°C), 0-95% RH,
Non-condensing
Listings UL/cUL
Power Supply Notes
All low-current Ground-Fault Sensors are sensitive devices
that require reasonable care in system design to avoid false
indication caused by high electrical noise levels. Keep in
mind that the best way to reduce noise in a system is to sup-
press it at its source.
1. Keep the sensor power isolated from noisy circuits.
2. Do not power the sensor with the same circuit that switches
contactors or other high current, inductive loads.
System Grounding
Good design practice and code require that all AC power
systems be grounded. AG Series sensors are designed to
work on grounded AC power systems. They may not operate
properly on ungrounded systems.
Model Number Key
AGT 1 - 420 - 24L - FL
Housing:
FL - Solid-Core
Power Supply:
24L - 24 VDC Loop Powered
Output Type:
420 - 4-20 mA proportional to fault current
Input Range:
1 - 0-50 mA
2 - 0-100 mA
AGT Series Ground Fault Indicator
Know Your Power
Other NK Technologies Products Include:
AC & DC Current Transducers
AC & DC Current Operated Switches
1 & 3Power Transducers
Current & Potential Transformers (CTs & PTs)
3511 Charter Park Drive, San Jose, CA 95136
Phone: 800-959-4014 or 408-871-7510
Fax: 408-871-7515
sales@nktechnologies.com, www.nktechnologies.com
INSTRUCTIONS
AGT SERIES
Ground Fault Indicator
Analog Output
Quick "How To" Guide
1. Run all current carrying conductors through sensor
window.
A. Use an auxiliary CT if conductors do not fi t. Consult
Factory for CT selection.
2. Mount the indicator to a surface if needed.
3. Connect output & power wiring.
A. Use 30-12 AWG copper conductors only and tighten
to 5-7 in-lbs torque.
B. Make sure fault current levels match the output
range shown on the sensors' label.
•
Loop Powered 4-20 mA sensor output.
•
Connect power supply in series with the load as
shown on next page.
C. Make sure power supply voltage is no lower than
12 and not greater than 35 VDC at the sensor ter-
minals.
292080302 Rev 3