Seaward PH3-LLT Proving Unit

The Seaward PH3-LLT is a lightweight compact proving unit providing a nominal output voltage of 500V DC. Output Voltage - 500V DC nominal Output current - 0.45mA into 2kohm.

The PH3-LLT has been designed to perform tests:
a) In a dry environment.
b) At a altitude of up to 2000m.
c) At temperature of 5°- 40°C without moisture condensation.

To maintain the specified performance, the instrument must be verified at regular intervals by either the manufacturer or an authorised Seaward Service Agent. We recommend a calibration period of one year.

The Seaward PH3-LLT proving unit is approved by Network Rail Certificate of Acceptance No. PA05/03345.

Seawrd PH3-LLT Specifications:

• Output Voltage - 500V DC nominal.
• Output current - 0.45mA into 2kohm.
• Two non-touchable terminals.
• Neon ‘active’ indicator.
• Compliance BS EN61010.
• Power Supply: 9Vdc, PP3 Alkaline battery.
• Degree of Protection: IP40.
• Dimensions: 110mm(h) x 85mm(w) x 60mm(d).
• Seaward PH3-LLT warranty: 1 year.