PRECISION BENCH TRANSFORMER MICRO OHMMETER

5895 Transformer Micro ohmmeter.
This Micro ohmmeter, Type 5895, has been specifically designed for the fast measurement of the resistance of large transformers. 
5895 Micro ohmmeter is equally suitable for the measurement of any resistance where a large
amount of inductance is also present. 

Transformer Micro ohmmeter

An integral timer and printer are also incorporated to enable precise readings to be
recorded at exact and programmed time intervals. 
Whilst being practical in use the instrument also has safety features to protect both the operator and the instrument from the hazards associated with this type of measurement. 
This micro ohmmeter instrument is suitable for the resistance measurement requirement of 
BS171 Part 2 or Part 1 IEC 76-5. 

IEEE-488 Interface included as standard. 

Transformer Micro ohmmeter Speed of Measurement

Stable accurate measurements can be achieved in a fraction of the time required than when using more traditional bridge methods. For an average size distribution transformer the resistance reading is available within 10 seconds

5895 Micro ohmmeter method of operation

A high test current and unique circuitry is used to rapidly drive the core into saturation and to eliminate any oscillation of the magnetic field, thus enabling a steady reading to be obtained quickly. 
A large high intensity LED is illuminated when the instrument is in the “Read” mode and remains ON when the instrument is switched to “Zero” until any E.M.F.'s, generated in the transformer as the magnetic field collapses, have fallen to a safe level for the leads to be removed.