NK TECHNOLOGIES VTU Series Instructions

Specifi cations
Power Supply 24VAC/DC External Power
(22-26VAC or DC), <4VA
Power supply is isolated from
monitored circuit and output signal
Use class 2 power supply
Voltage Measurement 0-800, 1000 or 1200 VAC or DC
Output 4–20mA (capped at 24mA max)
0-5 VDC
0-10 VDC
Response Time 100 ms (to 90% value)
Accuracy < 1% Full Scale
Linearity < 0.5%
Loading 4-20mA: < 400 ohms
0-5/0-10VDC >100 ohms
Isolation Voltage 5000 Volts
Frequency Range 0-400 Hertz
Operating Temp. -20°C to 50°C
(surrounding sensor)
Enclosure UL94 V0 Rated
Environmental -4 to 122 ° F
(-20 to 50° C),0–95% RH
Pollution Degree 2
Altitude to 2000 meters
Listings Designed for UL/cUL, CE
Warning! Risk of danger
Safe operation can only be guaranteed if the
transducer is used for the purpose for which is
was designed and within the limits of the techni-
cal specifi cations. 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 may
carry hazardous live voltage (e.g. primary con-
ductors, power supply). The transducer should
not be put into operation if the installation is not
complete.
Model Number Key
VTU 10 - 420 - 24U - OS
CASE STYLE:
OS - DIN rail compatible
POWER SUPPLY:
24U - Nominal 24 VAC/DC
OUTPUT:
420 - 4-20mA
005 - 0-5VDC
010 - 0-10VDC
VOLTAGE INPUT RANGE:
8 - 800V
10 - 1000V
12 - 1200V
SENSOR TYPE:
VTU - AC/DC Voltage Transducers
Know Your Power
Other NK Technologies Products Include:
AC & DC Current Transducers
AC & DC Current Operated Switches
1φ & 3φ Power Transducers
Current & Potential Transformers (CTs & PTs)
3511 Charter Park Drive, San Jose, CA 95136
800-959-4014 or 408-871-7510 Phone
408-871-7515 FAX
sales@nktechnologies.com, www.nktechnologies.com
INSTRUCTIONS
VTU SERIES
AC/DC Voltage Transducers
Ranges 800, 1000 and 1200 Volts
4-20mA, 0-5/10VDC Outputs
Quick "How To" Guide
1. Ensure correct sensor model was chosen for Input Volt-
age of application.
2. Mount the sensor to a DIN rail using integrated mounting
clip on backside of transducer or secure using the tabs
in each corner.
3. Connect monitored voltage (2) & (1) using 22-16 AWG
copper wires insulated to 75/90°. Lift the orange clip
on the terminal, insert wire and allow it to clamp on the
stripped end of the wire.
Refer to "Output Wiring" section for voltage and imped-
ance recommendations.
4. Connect 24VAC or DC power supply fused to 1 amp to
term. 3-4. Use twisted pair for CE compliance.
5. Connect output to the load using terminal 6 for the positive
signal, and terminal 5 to common or ground.
6. Energize primary circuit and sensor power.
VTU Instruction Sheet Rev 1 04/16 P/N 292180014