NK TECHNOLOGIES VTR Series Instructions

Specifi cations
Power Supply 24 VDC loop-powered. Use
Class 2 power supply only.
Input Range: Input 50-150 V: 73
Impedance 146 , 400-500 V: 300
KΩ
600 VAC: 365
Output Signal 4–20 mA proportional;
capped at 24 mA max
Response Time 250 ms (to 90% of step change)
Accuracy 1.0% FS @ 60 Hz (25-100%
of range)
2.5% FS @ 50 Hz
Linearity < 0.5% FS
Output Loading < 500 ohm loop impedance
Isolation Voltage 2200 VAC
Frequency Range 40 Hz – 100 Hz
Case UL94 V-0 Rated
Environmental Operating Temp. Range -4 to
122°F (-20 to 50°C)
Storage Temp. Range -22 to
140°F (-30 to 60°C)
0-95% RH, Non-condensing
Pollution Degree 2
Altitude to 6561 ft (2000 meters)
Listings UL/cUL, CE
For products intended for the EU market, the following is ap-
plicable to the CE compliance of the product:
The VTR Series comply with EN 61010-1 CAT III 600Vrms max
line-to-neutral measurement category.
Warning! Risk of danger
Safe operation can only be guaranteed if the trans-
ducer is used for the purpose it has been designed
for and within the limits of the technical specifi ca-
tions. When this symbol is used, it means you
must consult all documentation to understand the
nature of potential hazards and the action required
to avoid them.
Warning! Risk of electrical shock
When operating the transducer, certain parts of
the module may carry hazardous live voltage (e.g.
primary conductor, power supply). The transducer
should not be put into operation if the installation
is not complete.
Model Number Key
VTR 1 - 420 - 24L - DIN
, 240-300 V:
KΩ
,
KΩ
KΩ
VOLTAGE INPUT RANGE:
1 - 120 VAC
2 - 150 VAC
3 - 240 VAC
4 - 480 VAC
5 - 500 VAC
6 - 600 VAC
Special: Suffi x Y66: Range 0-50 VAC
SENSOR TYPE:
VTR - AC Voltage Transducers, True RMS Output
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
CASE STYLE:
DIN - DIN rail compatible
POWER SUPPLY:
24L - Nominal 24 VDC Loop Power
OUTPUT:
420 - 4-20 mA
Suffi x Y87: Range 0-400 VAC
Suffi x Y96: Range 0-300 VAC
INSTRUCTIONS
VTR SERIES
AC Voltage Transducers
Ranges 120 to 600 Volts
4-20 mA True RMS Output
Quick "How To" Guide
1. Ensure correct sensor model was chosen for Input
Voltage of application.
2. Mount the sensor to a DIN rail using integrated
mounting clip on backside of transducer.
3. Connect input voltage L1 & L2 and output wiring
(24V + & – ) using 30-12 AWG copper conductors
only rated 75°C minimum. Tighten to 6 in-lbs
torque. Refer to "Output Wiring" section for loop
voltage and impedance recommendations.
Recommend 1/2 A, 600 V fast acting fuses in the
primary circuit.
292180001 Rev 7