Maidugwari da Wasu Kafin Yawan Gida

Takardunin Kwatamati

Kwatamati shi ne wurare da ya kawo abin da ake yi da kwatar.

Takar Kwatamati a Takarda

A cikin kwatamati na tsayawa, zai iya zama sama da tattalin arziki da kuma takar kwatamati a kan 90 digiri. A gaba, wannan takar yana da damuwa da 90 digiri. An yi ayyuka da za su taimaka wajen inganta wannan takar. Za a duba hukumar:

A cikin hukumar, an yi koyar da sunan lag coil a kan tushen masu takarda N. Idan an yi jirgin arziki a kan pressure coil, yana bayyana flux F, wanda yake jagoranci Fp da Fg. Wannan Fp flux yana kudan disc na yawan sama da lag coil, wanda yake jagoranci emf El wanda yake da damuwa da Fp da 90 digiri. 

Il yana da damuwa da Fl da 90 digiri, kuma lag coil yana bayyana flux Fl. Wannan flux na yawan sama Fl da Fp, wanda yake da damuwa da mmf na lag ko shading coil. Mmf na shading coil zai iya zama da damuwa da wasu hanyoyi:

• Daga hanyoyin kawo damuwar resistance.

• Daga hanyoyin kawo damuwar shading bands.

Za a duba waɗannan mafi girma:

Kawo damuwar resistance:

Idan resistance na coil yana da damuwa, il yana da damuwa, wanda yake kawo damuwar mmf da kuma damuwar takar. Yana iya zama da damuwar takar idan a yi damuwar wire na coil. Kawo damuwar resistance yana iya zama da damuwar takar.

Daga hanyoyin kawo damuwar shading bands a kan tushen masu takarda, zai iya zama da damuwar takar saboda idan a yi damuwar shading bands a kan gabashin, zai iya jawo flux, wanda yake zama da damuwar emf, kuma mmf yana zama da damuwa da takar. Idan a yi damuwar shading bands a kan gabashin, zai iya jawo flux, wanda yake zama da damuwar emf, kuma mmf yana zama da damuwa da takar. Saboda haka, daga hanyoyin kawo damuwar shading bands, zai iya zama da damuwar takar.

Takarda Tsakiyar Gidaje

Don in taimaka tsakiyar gidaje, an yi koyar da fadada da yake da damuwa a kan tushen disc, wanda yake da damuwa da load. In ba a yi damuwar fadada, zai iya zama da creeping, wanda yake nufin da disc yana da damuwa bayan an yi jirgin arziki a kan pressure coil baki daya ba a kan current coil. Don in sa ta hanyar, an yi koyar da biyu holes a kan disc, wanda yake jagoranci eddy current path. Wannan yana zama da damuwar eddy current paths daga C zuwa C1, wanda yake bayyana magnetic pole a kan C1. Disc yana da damuwa har zuwa lokacin da hole yake samu edge na pole, inda yake da damuwar rotation da kuma opposing torque.

Takarda Overload

A cikin takarda, disc yana da damuwa, wanda yake bayyana dynamically induced emf. Wannan emf yana bayyana eddy currents, wanda suka jagoranci series magnetic field don bayyana breaking torque. Wannan breaking torque, wanda yake da damuwa da square of the current, yana zama da damuwa da rotation na disc. Don in sa ta hanyar, an yi damuwar full load speed na disc da damuwa. Errors a cikin single-phase energy meters yana nuna driving da kuma braking systems, wanda zai iya zama da damuwar:

Error caused by Driving System

• Error Due to Non Symmetrical Magnetic Circuit:Idan magnetic circuit ba a da damuwa, zai iya bayyana driving torque, wanda yake zama da meter creep.

• Error Due to Wrong Phase Angle:Idan ba a da damuwan phase difference a kan phasors, zai iya zama da improper rotation na disc. Improper phase angle yana nuna improper lag adjustment, variation of resistance with temperature ko abnormal frequency of supply voltage.

• Error Due to Wrong Magnitude of Fluxes:An fi sani da wasu sababon wrong magnitude of fluxes, daga cikinsu main reasons are abnormal values of current and voltage.