Chestnut Ridge, NY. Teledyne LeCroy has introduced two new additions to the HVD3000 series of high voltage differential probes—the 2-kV safety-rated HVD3206 and the 8.4-kV safety-rated HVD3605. Like the existing 1-kV safety-rated HVD310x probes, these new probes offer high gain accuracy, wide differential voltage range, high offset range, and favorable common-mode rejection ratio (CMRR).
The HVD3605 is safety-rated for 8,485 V (DC + peak AC) and 6,000 V RMS for test coverage of 5-kV-class electrical apparatus and power electronics. This probe has 1% gain accuracy, a standard 6-meter cable, a differential voltage range of 7,000 V (DC + peak AC) with a 7,600-V maximum measurable differential voltage before amplifier saturation, and an offset range up to 6,000 V, along with 100 MHz of bandwidth.
The HVD3206 is a safety-rated 2,000-V (DC + peak AC) and 1,500 VDC probe per the IEC/EN 61010-031:2015 standard. This probe was specifically designed to address solar PV string inverter requirements for 1,500 VDC inputs. This higher DC input voltage will become common in utility-scale string inverters since it allows economies of scale (more PV modules on each string) and lower installed cost. Teledyne LeCroy says it is the first company to offer a HV differential probe suitable for this application. The HVD3206 has the same 1% gain accuracy and 2,000 V peak differential voltage range, 120 MHz of bandwidth, and CMRR performance as the 1-kV safety-rated HVD3106 probe.
Also introduced were “no accessory” (-NOACC) versions of the existing HVD3102 and HVD3106 probes. The HVD3102-NOACC and HVD3106-NOACC provide an alternative to customers seeking excellent 1-kV safety-rated high voltage differential probes, but not requiring the full range of tip accessories. These are suitable for the price-conscious user who already has the required tip accessories or who will not need the full accessory tip set.
All HVD3000 Series probes connect to the oscilloscope through the ProBus interface. The ProBus interface provides power and communications to the probe so there is no need for a separate power supply or batteries, and attenuation is automatically selected based on the oscilloscope gain range (V/div) setting. Autozero can also easily be performed through the oscilloscope channel menu.
The HVD3206 (2 kV, 120 MHz) and the HVD3605 (6 kV, 100 MHz) U.S. list prices are $1,995 and $3,340, respectively. The HVD3102-NOACC (1 kV, 25 MHz, no accessories) and the HVD3106-NOACC (1 kV, 120 MHz, no accessories) U.S. list prices are $1045 and $1420, respectively, or $245 less than the versions that contain all of the accessories.
