SHI Mendeleevets - Instrument shunt
The instrument shunt is intended to measure direct current (DC) at the use of a special measuring instrument – DC millivoltmeter.
Compatibility of the instrument shunt with the meter-recorder IR-1 Mendeleevets and the universal diagnostic meter «Diakor» is provided by its design.
The shunt provides current to voltage transformation. The shunt is installed at the corresponding gap of the measured circuit.
The shunt is connected to the measured circuit using standard test leads with banana-type connectors with a diameter of 4 mm. To connect the shunt to the millivoltmeter it is necessary to use built into the shunt banana-type terminals with a diameter of 4 mm. The nominal distance between the terminals: 19 mm, according to GOST 7396.1.
|Instrument shunt rated voltage, mV||75||75||75|
|Instrument shunt rated current, mA||7,5||75||150|
|The limit of allowable basic relative error of the shunt, %||±0,5|
|Weight, kg, no more than||0,04|
|Dimensions (LxWxH), mm, no more than||63х41х14|
|Service lifetime, years||5|
The shunt is resistant for prolonged current overload exceeding the nominal current value by 2 times.
The shunt is resistant for short-term overload in one current pulse (without damage), exceeding the nominal current value by 5 times with a duration of 0.5 s.
Nominal currents and nominal resistances for different shunt designs are shown in the table.
|Shunt||Instrument shunt voltage, mV||Instrument shunt current, mA||Instrument shunt resistance, Ohm|
|1||Rated voltage of shunt, mV;|
|2||Rated current, mA;|