VT7 and VT8 AC / DC Voltage Transducers
DC to 10kHz Frequency Range
For Isolation and Conditioning of AC/DC Voltages
Key Features:
Wide Frequency Range: From DC to 10kHz.
Input Ranges: Available for 50mV to 1000V.
High Isolation: 2.5kV dielectric isolation between input and output.
Output Configurations:
0-1mA
4-20mA (4mA live zero)
0-5V
0-10V
RMS Calibration (VT8 series): Accurate voltage measurement of AC, AC+DC, or distorted waveforms, with support for up to the 9th harmonic.
Auxiliary Power Supply: Ensures output signal availability even when input is near zero.
Applications:
Measurement of AC and DC voltages in environments with distorted waveforms, including:
Pump speed controllers
Fan speed controllers
Motor VFD controllers
UPS and thyristor drives
Suitable for use in:
Energy management systems
Switchboards
Generator and telemetry controls
Shunt isolation and input isolation for systems requiring voltage measurement.
VT7 & VT8 DC & RMS AC / DC Voltage Transducers:
Model VT7: DC voltage transducer, producing an output proportional to the input from DC to 10kHz.
Model VT8: True RMS voltage transducer, providing a DC output that represents the RMS value of the input across a DC to 10kHz frequency range.
Technical Specifications:
Input Ranges:
50mV to 1000V for AC and DC voltage inputs.
Output Types:
0-1mA
4-20mA
0-5V
0-10V
4-12-20mA (optional rescaling and voltage input available).
Auxiliary Power Options:
95-135Vac, 230Vac, and 12V-48Vdc options are available, ensuring flexibility across a wide range of applications.
Isolation:
2500Vac dielectric test.
2.5kV isolation between input and output, ensuring the safety and integrity of the signal.
Instrument Power Options:
Option “-11”: 95-135Vac, 50/60Hz, 5VA.
Option “-22”: 230Vac, 50/60Hz, 5VA, ±15%.
Options “-12, -15, -24, -37, -48”: 12Vdc through 48Vdc (±10%), max current draw 150mA.
Input and Output Voltage Transducer Models:
Millivolt Inputs:
0-50mV: VT7-015B / VT8-015E / VT7-015D / VT8-015X5
0-100mV: VT7-016B / VT8-016E / VT7-016D / VT8-016X5
0-200mV: VT7-017B / VT8-017E / VT7-017D / VT8-017X5
0-250mV: VT7-018B / VT8-018E / VT7-018D / VT8-018X5
Voltage Inputs:
0-10V: VT7-001B / VT8-001E / VT7-001D / VT8-001X5
0-25V: VT7-002B / VT8-002E / VT7-002D / VT8-002X5
0-50V: VT7-003B / VT8-003E / VT7-003D / VT8-003X5
0-100V: VT7-004B / VT8-004E / VT7-004D / VT8-004X5
0-250V: VT7-006B / VT8-006E / VT7-006D / VT8-006X5
0-500V: VT7-009B / VT8-009E / VT7-009D / VT8-009X5
0-1000V: VT7-014B / VT8-014E / VT7-014D / VT8-014X5
Application Examples:
VT7 Series: Used as a high-voltage isolator or millivolt shunt isolator.
VT8 Series: Ideal for measuring RMS AC and DC voltages in systems with distorted waveforms like motor drives, VFDs, UPS systems, and energy management systems.
The VT7 and VT8 AC/DC voltage transducers ensure accurate, isolated measurement of AC and DC voltages across a wide range of applications, from shunt isolation to distorted waveform measurement in complex industrial systems.