# Title: Testec TT-HVP 40 High Voltage Passive Probe 40kV DC/28kV AC
## Description: Professional High Voltage Measurement for Multimeters The Testec TT-HVP 40 is a precision-engineered high voltage passive probe designed specifically for safe measurement of extreme voltages using standard digital multimeters. This probe extends your multimeter's measurement capability to 40kV DC and 28kV AC RMS, making it indispensable for power supply testing, CRT television servicing, and industrial high voltage diagnostics. Resistive Divider Technology Built around a proven 1000:1 resistive divider circuit, the TT-HVP 40 uses high-precision 1000MΩ input resistance to minimise circuit loading whilst maintaining measurement accuracy. When connected to 10MΩ multimeters, the probe provides a 1000:1 division ratio. For 1MΩ input impedance instruments, the ratio becomes 2000:1, offering versatility across different measurement equipment. Key Specifications: Parameter Value Notes Max DC Input 40kV ±5% accuracy (1-20kV), ±6% (20-40kV) Max AC Input 28kV RMS 0-300Hz, ±5% at 60Hz Input Resistance 1000MΩ Minimal circuit loading Temperature Coefficient <200ppm/°C Excellent thermal stability Safety Features Safety is paramount in high voltage measurement. The TT-HVP 40 incorporates multiple protective features including CAT I overvoltage protection, reinforced insulation, and a mandatory grounding connection via the supplied earth clip. The probe body features robust environmental ratings, operating from 0°C to +50°C and withstanding humidity up to 80% at 40°C. Important: This probe is rated for CAT I (energy-limited circuits) only. Suitable for applications such as power supply testing, CRT servicing, and laboratory measurements. Not suitable for mains distribution or power line measurements. Wiring Quick-Start Connection is straightforward using standard 4mm banana plugs: 1. Connect probe's banana plugs to multimeter V+ and COM terminals 2. Set multimeter to appropriate DC or AC voltage range (disable autoranging) 3. Connect ground clip to reliable earth/chassis ground BEFORE touching high voltage 4. Place probe tip on measurement point 5. Read multimeter value and multiply by division ratio (1000:1 or 2000:1) 6. Remove probe tip BEFORE disconnecting ground clip Probe connection diagram showing banana plug connections to multimeter and ground clip attachment Applications Power Supply Testing: Measuring output voltages in high voltage DC-DC converters CRT Television Servicing: Testing EHT (Extra High Tension) voltages up to 40kV Industrial Equipment: Measuring high voltage rails in manufacturing equipment Laboratory Research: Precision measurements in high voltage research applications
## Product type: Multimeter Accessory
## Vendor: TESTEC Elektronik GmbH
## Tags: Accessory, High Voltage Probe, High-Voltage, Multimeter Probe, Oscilloscope, Oscilloscope Probe, Passive Probe, spec-oscilloscope-probe, Test Probe, Testec
## Price range: 145.0 - 145.0 GBP
## Link: https://thedebugstore.com/products/testec-tt-hvp-40-high-voltage-probe-15001
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## Variants
- Default Title, SKU: 15001, Available: yes, Inventory: 1
## Metafields
- description_tag: Testec TT-HVP 40 high voltage probe extends multimeters to 40kV DC/28kV AC. 1000:1 ratio, CAT I safety, ±5% accuracy. Essential for power supply testing. Buy now.
- title_tag: Testec TT-HVP 40 High Voltage Probe 40kV - Professional Multimeter Testing | Debug Store
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- widget:
- condition: new
- custom_product: false
- mpn: TT-HVP-40
- google_product_category: Electronics
- custom_label_0: Multimeter Accessory
- manufacturer: TESTEC Elektronik GmbH
- warranty: 12 months
- backorder_label: If no stock is shown above, order now and we'll ship within 5 working days.
- mpn: TT-HVP-40
- myordercount: {"ordercount":1,"recentcount":1}
- warranty: 12 months
- brand: Testec
- manufacturer: TESTEC Elektronik GmbH
- brands: gid://shopify/Metaobject/56313938143
- breadcrumbs: ["gid://shopify/Collection/267180835005"]
- customhs_code: 903090
- key_feature_1: High voltage passive probe extending multimeter capability to 40kV DC/28kV AC with 1000:1 division ratio.
- summary: The Testec TT-HVP 40 represents professional-grade high voltage measurement capability in a compact, safe design. This passive probe transforms any 10MΩ input impedance multimeter into a high voltage measurement instrument capable of safely measuring up to 40kV DC or 28kV AC RMS. The probe's resistive divider architecture provides excellent accuracy (±5% for most ranges) whilst maintaining minimal circuit loading through its 1000MΩ input resistance. The probe's dual division ratio capability sets it apart: 1000:1 when used with 10MΩ multimeters and 2000:1 with 1MΩ instruments, providing flexibility across different equipment. With a bandwidth extending to 300Hz and temperature stability better than 200ppm/°C, the TT-HVP 40 delivers reliable measurements in demanding applications.
Safety compliance to CAT I standards ensures reliable operation in energy-limited circuits, whilst the reinforced 1-metre cable and mandatory ground connection provide operator protection. Ideal for power supply engineers working with high voltage power supplies, service technicians maintaining CRT equipment, and laboratory researchers requiring precision high voltage measurements. The probe operates reliably across industrial temperature ranges and altitude conditions up to 4,600 metres.
- key_feature_2: 40kV DC/28kV AC measurement capability
- key_feature_2_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Safely measure extreme voltages with standard multimeters up to 40,000V DC or 28,000V AC RMS"}]}]}
- key_feature_3: Dual division ratio: 1000:1 or 2000:1
- key_feature_3_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Automatically adapts to 10MΩ or 1MΩ multimeter input impedance for maximum flexibility"}]}]}
- key_feature_4: 1000MΩ input resistance minimises loading
- key_feature_4_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"High impedance design prevents measurement errors and circuit disruption"}]}]}
- key_feature_5: CAT I safety compliance with reinforced insulation
- key_feature_5_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Certified for energy-limited circuit measurements with robust safety protection"}]}]}
- key_feature_6: ±5% measurement accuracy across most ranges
- key_feature_6_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Professional precision with ±5% accuracy from 1-20kV DC and at 60Hz AC"}]}]}
- key_feature_7: 300Hz bandwidth for AC measurements
- key_feature_7_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Accurate AC voltage measurement from DC to 300Hz with -3dB frequency response"}]}]}
- key_feature_8_tooltip: {"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"Mandatory ground connection for operator safety"}]}]}
- key_feature_8: Integrated earth clip ensures safe operation and prevents accidental shock hazards
- why_people_choose_3_title: Universal Multimeter Compatibility
- why_people_choose_2_title: Enhanced Safety Protection
- why_people_choose_1_title: Professional Grade Accuracy
- why_people_choose_1: Delivers ±5% precision for critical high voltage measurements in power supply development and CRT servicing applications
- why_people_choose_3: Works with both 10MΩ and 1MΩ input impedance multimeters through automatic ratio adjustment for maximum equipment flexibility
- why_people_choose_2: CAT I compliance with mandatory grounding eliminates shock hazards when measuring dangerous voltages up to 40kV
- 1572355: What multimeters are compatible with the Testec TT-HVP 40?***SIMP***The probe works with any digital or analogue multimeter having 10MΩ or 1MΩ input impedance. Most standard bench and handheld multimeters use 10MΩ input resistance, giving a 1000:1 division ratio. The probe automatically provides 2000:1 ratio with 1MΩ impedance meters for consistent accuracy.
- 1572356: Can I use this probe for mains electrical measurements?***SIMP***No, the TT-HVP 40 is rated CAT I for energy-limited circuits only. It's designed for power supply testing, CRT servicing, and laboratory applications where high voltage exists but energy is limited. For mains distribution measurements, use appropriately rated CAT II, III, or IV equipment.
- 1572357: What safety precautions must I follow when using this probe?***SIMP***Always connect the ground clip to a reliable earth before touching the high voltage point. Never remove the ground connection whilst the probe tip contacts high voltage. Inspect the probe for damage before each use, ensure dry conditions, and turn off the high voltage source when possible during connections.
- 1572358: How accurate are the voltage readings with this probe?***SIMP***DC accuracy is ±5% from 1kV to 20kV, and ±6% from 20kV to 40kV. AC accuracy is ±5% at 60Hz with bandwidth extending to 300Hz at -3dB. The probe's low temperature coefficient (<200ppm/°C) maintains accuracy across industrial temperature ranges.
- 1572359: What's the difference between 1000:1 and 2000:1 division ratios?***SIMP***The division ratio depends on your multimeter's input impedance. With 10MΩ multimeters (most common), you get 1000:1 ratio - multiply the reading by 1000. With 1MΩ meters, the ratio becomes 2000:1 - multiply by 2000. This automatic adaptation ensures consistent performance across different equipment.
- 1572360: Can this probe measure AC voltages at different frequencies?***SIMP***Yes, the probe measures AC from DC to 300Hz with specified accuracy. It's optimised for power line frequencies (50/60Hz) where accuracy is ±5%. Response rolls off at higher frequencies, reaching -3dB at 300Hz, making it suitable for most power supply and industrial applications.
- 1572361: What applications is the TT-HVP 40 best suited for?***SIMP***Primary applications include power supply output voltage measurement, CRT television EHT testing, high voltage laboratory research, and industrial equipment diagnostics. The probe excels in any situation requiring safe, accurate measurement of high DC or low-frequency AC voltages in energy-limited circuits.
- 1572363: How does the probe's high input impedance benefit measurements?***SIMP***The 1000MΩ input resistance minimises circuit loading, preventing measurement errors and avoiding disruption to sensitive high voltage circuits. This is crucial in power supply testing where loading could affect regulation or cause instability in the circuit under test.
- 1572365: What environmental conditions can the probe withstand?***SIMP***Operating temperature range is 0°C to +50°C, with storage from -20°C to +70°C. The probe operates at altitudes up to 4,600 metres and withstands 80% relative humidity at 40°C. These specifications ensure reliable operation in most industrial and laboratory environments.
- 1572366: What accessories are included with the TT-HVP 40 probe?***SIMP***The probe includes banana plug connectors for multimeter connection, an earth grounding clip with 90cm lead, a screw-in probe tip, and a screw-in hook attachment. The complete package provides everything needed for immediate high voltage measurement capability with your existing multimeter.