White Fused Alumina WFA Grains Suppliers Philippines

With the development of current technology(white fused alumina), comprehensive electrical protection technology is becoming more and more perfect, but the basis of electrical protection is the foundation of all protection, and its characteristics, requirements and nature are the principles of current and future electrical protection(black silicon carbide). Two sets of protection voltage switching circuits should be provided.

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For the relay protection device with dual configuration(white aluminum oxide non-skid grit), the current circuit, voltage circuit, trip circuit, power circuit and relevant cable lead of each device shall be completely independent. Sealing performance: the sealing performance of the capacitor shall be sufficient to ensure that there is no leakage for at least 2 hours after each part reaches the maximum allowable operating temperature of the dielectric(silicon carbide 180 grit).

(white fused alumina WFA grains suppliers philippines)All kinds of input switching values required by the logic judgment circuit of the protection device shall be directly connected to the protection device without switching through the integrated automation system and its communication network(white corundum powder), and the tripping output contact of the protection device shall trip directly(green silicon carbide). However, the relay protection device should not operate correctly in the whole phase oscillation process.

The protection device shall be able to operate independently when it is not connected with the integrated automation equipment(white fused alumina make company). Component failure 2: when each rectifier arm component in the rectifier cabinet is failure 2, after 15 seconds delay, the unit will send out a fault alarm signa(pink aluminum oxide). Then, when the DC ripple coefficient is not more than 5%, the relay protection and automatic safety device should not misoperate.(white fused alumina WFA grains suppliers philippines)

Relative to the anti-interference requirements of relay protection and automatic safety device(white aluminum oxide): when the relay protection and automatic safety device suffer from electromagnetic disturbance, it should not reduce the accuracy of its control and the rapidity of its response(white aluminum oxide powder), and the performance degradation of any protection function is not allowedl, and the unit will trip under high voltage.

(white fused alumina WFA grains suppliers philippines)In case of metal and non-metal faults under various operation modes within the protection scope, the relay protection device shall be able to operate correctly(brown fused alumina for abrasive); even if one side is a weak power supply, the correct operation of both sides shall be ensured; in case of faults outside the protection scope, no misoperation shall be allowed(black aluminum oxide). The protection and measurement and control of switchyard equipment shall not share CPU.

In recent years, when the DC power supply voltage suddenly disappears and then returns to normal(white corundum), the relay protection and safety automatic device / DC converter should have self recovery function. In case of short circuit or open circuit of voltage transformer circuit used by relay protection and automatic safety device(brown fused aluminum oxide), the device shall not misoperate and can send alarm signal and block protection.(white fused alumina WFA grains suppliers philippines)

The relay can compensate all kinds of equipment and CT connection to get the correct differential action(aluminium oxide grit blasting vendor). In the substation of electrolytic aluminum plant, SEL-587 current differential relay and over-current relay are mainly used as the main protection of power transformer(garnet abrasive price). In the process of DC power supply voltage rising and falling slowly, relay protection and automatic safety device should not misoperate.