VT1005 - High-Precision 5000 V AC/DC Voltage Divider for Advanced Power Analysis
AC/DC high-voltage divider up to 5 kVrms, bandwidth DC to 4 MHz (–3 dB), 1000:1 division ratio, ±0.08% DC accuracy, ±0.04% accuracy at 50/60 Hz, amplitude flatness ±0.1% to 200 kHz, phase flatness ±0.1° to 500 kHz, CMRR 80 dB at 100 kHz, BNC output
Product information VT1005 - High-Precision 5000 V AC/DC Voltage Divider for Advanced Power Analysis
Key Specifications
More than specs – find more details here:
- Maximum input voltage: 5 kVrms
- Bandwidth: DC to 4 MHz (–3 dB)
- Accuracy: ±0.08% (DC), ±0.04% (50/60 Hz)
- Flatness: amplitude ±0.1% to 200 kHz, phase ±0.1° to 500 kHz
- CMRR: 80 dB at 100 kHz
Unique Advantages of the HIOKI VT1005
- Precise high-voltage measurement up to 5 kVrms, ideal for power analysis
- Amplitude and phase accuracy maintained up to 1 MHz
- High common-mode rejection with 80 dB CMRR at 100 kHz ensures stable measurement in noisy environments
Typical Applications
- Loss measurement in high-voltage transformers, inductors, and coils
- Efficiency evaluation of SiC/GaN-based high-voltage inverters and converters
- Performance assessment of wireless power transfer (WPT) systems
- Power analysis in railway traction and large-scale industrial power systems
- Testing and efficiency verification of high-voltage solar inverters
Detailed Product Overview
The HIOKI VT1005 is a high-precision AC/DC high-voltage divider for measuring signals up to 5 kVrms. It scales input voltage by a fixed 1000:1 ratio and outputs a clean, scaled-down signal via BNC for direct connection to power analyzers, memory recorders, oscilloscopes, or any other instrument with a BNC input.
The HIOKI VT1005 is a high-precision AC/DC high-voltage divider for measuring signals up to 5 kVrms. It scales input voltage by a fixed 1000:1 ratio and outputs a clean, scaled-down signal via BNC for direct connection to power analyzers, memory recorders, oscilloscopes, or any other instrument with a BNC input.
The VT1005 delivers outstanding accuracy across a wide frequency range: ±0.08% for DC
and ±0.04% at 50/60 Hz, with amplitude flatness of ±0.1% up to 200 kHz and phase accuracy of ±0.1° up to 500 kHz. This wide and flat frequency response enables precise
power analysis even in fast-switching systems with significant harmonic content, supporting
measurements up to 4 MHz (–3 dB).
Comparison of an AC/DC high voltage divider with differential probes
Compared to traditional high-voltage differential probes, the HIOKI VT1005 High Voltage Divider delivers clear
performance advantages. Most differential probes offer around 2% amplitude accuracy and
typically do not specify phase accuracy. These features make them unsuitable for precise
power measurement, particularly in systems deploying Pulse Width Modulation (PWM), such
as high voltage DC/DC converters and traction drive inverters. The VT1005 is engineered for
high-accuracy AC/DC voltage measurement with well-defined phase and amplitude
specifications, making it the right choice for such demanding applications.
Passive architecture for stable measurement results
The passive architecture of the VT1005 eliminates issues commonly associated with active
differential probes, such as probe loading, thermal drift, and active circuit noise. This results
in cleaner signals, higher measurement accuracy and long-term stability, even at higher
frequencies.
The VT1005 also features a high common-mode rejection ratio of 80 dB at 100 kHz, allowing
it to maintain measurement integrity even in electromagnetically noisy environments such as
inverter test benches or industrial power systems.
Thanks to its accuracy, frequency response, and noise immunity, the VT1005 is an essential
tool for measuring losses in high-voltage transformers and inductors, evaluating the
efficiency of SiC/GaN-based power electronics, and qualifying wireless power transfer (WPT)
systems.
- VT1005 High Voltage Divider
- L1050-01 High Voltage Cords 1.5 m
- L9217 BNC cable
- 9704 Adapter BNC / banana
- Power cord ×1
- Instruction manual
Related products
PW3390
PW3390 - Portable 4-channel Power Analyzer
Portable 4-channel power analyser with ±0.09% basic accuracy, DC–200 kHz measurement range, 16-bit converter, phase shift correction for HIOKI current sensors, 50 ms data update rate, 16-channel waveform/analogue output, motor analysis, WLTP-compliant.
PW8001
PW8001 - High Precision Power Analyzer
High-precision power analyzer for analysing the efficiency of inverters and inverters with basic accuracy of ±0.03%, sampling rate of 15 MHz, 18-bit AD converters, automatic phase shift correction, data update rate of 1 ms.
MR6000
MR6000 - 32-channel modular memory recorder, 200 MS/s, 1000V, touchscreen
Modular memory recorder, up to 32 channels, max. sampling rate 200 MS/s, max 1000 VDC isolated direct voltage input, up to 256 GB storage with SSD option, intuitive user interface, touchscreen, real-time waveform calculation and real-time saving
MR8848
MR8848 - Modular 32-channel memory recorder, 20 MS/s, 1000 V direct input, rugged design
Modular memory recorder, up to 32 analog and 16 logic channels, max. sampling rate 20 MS/s, max 1000 VDC isolated direct voltage input, 1 TB storage with SSD option, optional real-time saving, rugged design, AC or DC power supply
L9217
L9217 - BNC Cable
The L9217 is a connection cord with insulated BNC connectors at both ends. Technical Details: Length: 1.6 m Maximum Rated Voltage to Earth: CAT III 300V, CAT II 600VMaximum Rated Line Voltage: 300V Maximum Rated Current: 0.2A Compatible Hioki Products: VT1005 Voltage Divider, Memory Recorders and similar products.
9704
9704 - Adapter BNC socket
The 9704 is a versatile banana to BNC conversion adapter accessory wherever this is required. It is suitable for example for Hioki digital multimeters where current probes can be connected, or where a banana to BNC test lead conversion is required for measurement applications.Dimensions: 63W×33H×13D mmConnector configuration: 2x Banana male, 1x BNC female Distance between banana plugs: 19 mmVoltage protection category: CAT III 600VCompatible AC clamp and flexible probes: 9010-50, 9018-50, 9132-50, CT9667-01, CT9667-02, CT9667-03 Compatible Digital Multimeters: DT4252, DT4253, DT4255, DT4256, DT4261, DT4281, DT4282 Others: Connection Cable L9097