VTH1ph and VTHR1ph Single Phase Voltage Transducers for Voltage Sensing, instantaneous or rms with Modbus/RS485 outputs

Safety and good working practice when using the VTH3ph and VTHR3ph voltage transducers

1. Ensure that all personnel connecting and configuring the VTH are fully trained and conversant with electric shock and fire hazards associated with electricity supplies
2. Ensure the circuit under test is switched off and isolated before connection
3. Only use safety type cables for connections to the VTH probe.  These cables are typically fitted with a 4mm safety type banana connector on either end.  All connections should be insulated to prevent human contact
4. Ensure that the VTH output (lo terminal) is connected to a grounded point on the scope/data logger/measurement system.  Ensure it is a true ground and not just signal low
5. Ensure that the maximum differential input voltage of (1000Vpk) and input voltage to ground (1000Vpk) are not exceeded
6. Users should always work in pairs, both parties should be trained and familiar with medical procedures in the event of electric shock
7. Ensure the circuit test is protected with over current protection
8. During installation, avoid all mechanical stress to the VTH probe terminals
9. Do not use the probe with the case open
10. Ensure that the storage and operating conditions are clean and dry, do not use where there is risk of explosion

Product Specifications

• Available input ranges 0.333V to 600V ac or dc.  Operational from 10% - 125% of range
• Outputs: 10V, 4-20mA and 4-12-20mA outputs available
• Auxiliary power input 12/24/48/110/230 Vdc or Vac.  Max current draw 24Vdc 100mA max
• Fast response time <200uS (no filtering).  Standard frequency range is DC-10kHz
• RS485 and Modbus interfaces transmit Vrms, Vrmsmax, Vmean, Vpk, Vpkmax, Vcf and frequency
• Certified accuracy better than <0.25% at +23°C ±5°C, traceable to NIST/NPL
• Internal gain and offset controls
• Galvanic isolation
• Working temperature range -10°C - 50°C
• Functional temp range –20°C - 70°C
• Rated working voltage insulation 1.5kVpk, flash tested 2.5kV for 1 minute
• Screw terminal input/output connections IP30
• Din Rail or Screw fixing
• CE Marked, UL94V0, IEC/EN61010 cat II, IEC348, DIN 57411
• Case IP50, terminals IP30 complies with IEC529
• 1 year warranty