Time Constant of Moving Iron Ammeter Calculator

✖Shunt Inductance refers to an inductor connected in parallel with a component or circuit to affect the flow of electrical current.ⓘ Shunt Inductance [L_sh]			+10% -10%
✖Shunt Resistance refers to a low-resistance pathway connected in parallel with a measuring instrument to divert most of the current and enable accurate measurement.ⓘ Shunt Resistance [R_sh]			+10% -10%

✖Time constant refers to the characteristic time it takes for a system to reach a certain fraction of its final steady-state value in response to a change or disturbance.ⓘ Time Constant of Moving Iron Ammeter [T]

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Formula

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Time Constant of Moving Iron Ammeter

Formula

`"T" = "L"_{"sh"}/"R"_{"sh"}`

Example

`"0.125s"="1.25H"/"10Ω"`

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Time Constant of Moving Iron Ammeter Solution

STEP 0: Pre-Calculation Summary

Formula Used

Time Constant = Shunt Inductance/Shunt Resistance
T = L_sh/R_sh
This formula uses 3 Variables

Variables Used

Time Constant - (Measured in Second) - Time constant refers to the characteristic time it takes for a system to reach a certain fraction of its final steady-state value in response to a change or disturbance.
Shunt Inductance - (Measured in Henry) - Shunt Inductance refers to an inductor connected in parallel with a component or circuit to affect the flow of electrical current.
Shunt Resistance - (Measured in Ohm) - Shunt Resistance refers to a low-resistance pathway connected in parallel with a measuring instrument to divert most of the current and enable accurate measurement.

STEP 1: Convert Input(s) to Base Unit

Shunt Inductance: 1.25 Henry --> 1.25 Henry No Conversion Required
Shunt Resistance: 10 Ohm --> 10 Ohm No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

T = L_sh/R_sh --> 1.25/10

Evaluating ... ...

T = 0.125

STEP 3: Convert Result to Output's Unit

0.125 Second --> No Conversion Required

FINAL ANSWER

0.125 Second <-- Time Constant

(Calculation completed in 00.004 seconds)

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Created by Nikita Suryawanshi

Vellore Institute of Technology (VIT), Vellore

Nikita Suryawanshi has created this Calculator and 100+ more calculators!

Verified by Payal Priya

Birsa Institute of Technology (BIT), Sindri

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< 10+ Ammeter Calculators

m of Moving Iron Ammeter

Go Multiplying Power = (Meter Resistance/Shunt Resistance)*sqrt((1+((Angular Frequency*Inductance)/Meter Resistance)^2)/(1+((Angular Frequency*Shunt Inductance)/Shunt Resistance)^2))

Rsh of PMMC based Ammeter

Go Shunt Resistance = (Meter Current*Meter Resistance)/(Electric Current-Meter Current)

Resistance at switch position n for multi range Ammeter

Go Resistance at nth Switch Position = (Resistance at Switch Position 1+Meter Resistance)/Nth Multiplying Factor

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Go Microammeter Current = Electric Potential Difference/Insulation Volume Resistance

Current at Full-scale reading

Go Current at Full Scale Reading = Full Scale Voltage Reading/Meter Resistance

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Go Nth Multiplier Resistance = Meter Resistance/(Nth Multiplying Factor-1)

m of PMMC based Ammeter

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Time Constant of Moving Iron Ammeter

Go Time Constant = Shunt Inductance/Shunt Resistance

Average Meter Current

Go Average Current = Electric Current*0.637

Peak Meter Current

Go Electric Current = Average Current/0.637

Time Constant of Moving Iron Ammeter Formula

Time Constant = Shunt Inductance/Shunt Resistance
T = L_sh/R_sh

What is Moving Iron Instrument?

A moving-iron instrument is generally used to measure alternating voltages and currents. The moving element is an iron vane/plate. This iron is moved in a magnetic field produced by a stationary coil, which is excited by the current. On excitement, the coil behaves as an electromagnet, and the vane moves in such a way that the flux increases. Force is produced in the direction which results in the increment of coil inductance

How to Calculate Time Constant of Moving Iron Ammeter?

Time Constant of Moving Iron Ammeter calculator uses Time Constant = Shunt Inductance/Shunt Resistance to calculate the Time Constant, The Time Constant of Moving Iron Ammeter formula is defined as the characteristic time it takes for the ammeter's pointer to reach a certain fraction (typically 63.2%) of its final deflection when subjected to a step change in current. It represents the speed at which the ammeter responds to changes in current and settles to its final reading. Time Constant is denoted by T symbol.

How to calculate Time Constant of Moving Iron Ammeter using this online calculator? To use this online calculator for Time Constant of Moving Iron Ammeter, enter Shunt Inductance (L_sh) & Shunt Resistance (R_sh) and hit the calculate button. Here is how the Time Constant of Moving Iron Ammeter calculation can be explained with given input values -> 0.125 = 1.25/10.

FAQ

What is Time Constant of Moving Iron Ammeter?

The Time Constant of Moving Iron Ammeter formula is defined as the characteristic time it takes for the ammeter's pointer to reach a certain fraction (typically 63.2%) of its final deflection when subjected to a step change in current. It represents the speed at which the ammeter responds to changes in current and settles to its final reading and is represented as T = L_sh/R_sh or Time Constant = Shunt Inductance/Shunt Resistance. Shunt Inductance refers to an inductor connected in parallel with a component or circuit to affect the flow of electrical current & Shunt Resistance refers to a low-resistance pathway connected in parallel with a measuring instrument to divert most of the current and enable accurate measurement.

How to calculate Time Constant of Moving Iron Ammeter?

The Time Constant of Moving Iron Ammeter formula is defined as the characteristic time it takes for the ammeter's pointer to reach a certain fraction (typically 63.2%) of its final deflection when subjected to a step change in current. It represents the speed at which the ammeter responds to changes in current and settles to its final reading is calculated using Time Constant = Shunt Inductance/Shunt Resistance. To calculate Time Constant of Moving Iron Ammeter, you need Shunt Inductance (L_sh) & Shunt Resistance (R_sh). With our tool, you need to enter the respective value for Shunt Inductance & Shunt Resistance and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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