NK TECHNOLOGIES APS Series Instructions

Specifi cations
Output 4-20mA
Output Limit 22mA
Accuracy 1% FS
Response Time 100 mS (to 90% of step change)
Frequency Range 10-400 Hz
Power Supply 24VDC Nominal Loop Powered 36 VDC
Maximum
Power Inputs Expressed as:
Amps 2-120A
kW 0.5 kW to 100 kW
HP 1/4HP@120 VAC to 150 HP@480 VAC
Voltage Input 120, 240 or 480 VAC Nominal
Voltage Variation +/- 25% of nominal
Amperage Over-range 150% FS indefi nitely
300% FS 10 Seconds
600% FS 5 Seconds
Output Terminals Finger-safe captive screw, 10-24 AWG
Torque to 4-5 inch pounds
Voltage Input Up to 10 AWG wire, 600V max.
Fusing External fusing of voltage input
recommended
Indication Power LED
Input Conditions Across the line motors and VFDs
Environmental -4 to 140° F, -20 to 60° C
Power Supply
V = 12VDC + (R x .020A)
L L
Where: V = Minimum Loop Power
L
32 V R = Total Loop Resistance
L
(Ohms)
LOOP
22 V
POWER
(VDC)
12 V
0 250 500
Total Loop Impedance (Ohms)
Model Number Key
Example: APS4-420-24L-10.0
Single Phase watt transducer, 480VAC Input, 4-20mA output
with 24VDC Loop powered, 10 kW max input.
APS 4 -
Voltage
1 120 VAC
2 240 VAC
4 480 VAC
Output
420 4-20 mA
Note:
Not all kW ranges are available
for each voltage input range.
Know Your Power
Other NK Technologies Products Include:
AC & DC Current Switches
Ground Fault Sensors
Voltage & Power Transducers
Current Transformers (CTs)
Operating
Range
3511 Charter Park Drive, San Jose, CA 95136
800-959-4014 or +1-408-871-7510 Phone
750 1000 +1-408-871-7515 FAX
sales@nktechnologies.com, www.nktechnologies.com
420 - 24L - 50.0
Full scale kW
0.5
0.75
1.0
Power Supply
2.0
24L 24VDC
5.0
Loop-
10.0
Powered
20.0
50.0
75.0
100
INSTRUCTIONS
APS Series
AC Power Transducer
True Power of 1φ or 3φ Balanced Loads
Quick "How To" Guide
1. Route wire to be monitored through aperture. For
480VAC and/or 3 phase installations, ensure wires
are routed through the aperture in a two-pass con-
fi guration as shown on reverse side.
2. Mount the sensor to a surface if needed.
3. Connect voltage and output wiring to appropriate
terminals. Ensure voltage is derived from same
line that runs through the aperture. Use fi eld sup-
plied fuse or circuit breaker per standard wiring
practice.
A. Use up to 10 AWG copper wires, tighten ter-
minals to 4-5 inch-pounds torque.
B. Make sure loop power meets specifi cations.
APS Inst. Rev 5, 1/19 P/N 790180010