Description
Hioki VT1005 Divider for Accurate High-Voltage Measurements
The Hioki VT1005 Divider is a high-performance AC/DC high voltage divider designed to safely measure voltages up to 5000 V and evaluate the efficiency of inverters in power systems and rail applications. By dividing high voltage signals and outputting them to a compatible power analyzer, the VT1005 allows accurate voltage and efficiency measurements that would be impossible with standard differential probes.
High-Precision Voltage Measurement
The VT1005 Divider achieves ±0.08% accuracy at DC, ±0.04% at 50/60 Hz, and ±0.17% at 50 kHz, ensuring highly reliable results across a wide range of frequencies. Its measurement band spans DC to 4 MHz, with exceptional amplitude flatness (±0.1% up to 200 kHz) and phase flatness (±0.1° up to 500 kHz), allowing detailed evaluation of both fundamental and switching frequency components in high-efficiency inverters.
Safety and Noise Immunity
Designed with differential input and high common-mode rejection (CMRR 80 dB typical at 100 kHz), the VT1005 maintains measurement accuracy even in noisy inverter environments. With CAT II 2000 V and CAT III 1500 V ratings, it ensures safe operation during high-voltage testing, making it ideal for inverters using SiC power devices and other high-voltage equipment.
Accurate Efficiency Evaluation
The VT1005 allows users to detect small efficiency improvements on the order of 0.1%, something conventional high-voltage probes struggle to achieve. This capability is crucial for analyzing inverter performance and high-efficiency power conversion systems where precise measurement of both fundamental and switching components is required.
Technical Specifications
| Specification | Details |
| Product Name | Hioki VT1005 AC/DC High Voltage Divider |
| Maximum Input Voltage | 5000 V AC/DC, ±7100 V peak (no category) |
| Measurement Accuracy | ±0.08% DC, ±0.04% 50/60 Hz, ±0.17% 50 kHz |
| Frequency Band | DC to 4 MHz (-3 dB) |
| Amplitude Flatness | ±0.1% up to 200 kHz |
| Phase Flatness | ±0.1° up to 500 kHz |
| Noise Resistance | CMRR 80 dB typical (100 kHz) |
| Measurement Method | Differential input |
| Safety Category | CAT II 2000 V, CAT III 1500 V |
| Ideal Applications | High-voltage inverters, rail power systems, power efficiency testing |
| Key Benefit | Accurate high-voltage measurement and inverter efficiency evaluation in noisy environments |
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