Thermosetting electromagnetic coil of pneumatic steam valve FN20553EX

Basic parameters such as rated voltage and resistance of electromagnetic coil.

The model, rated voltage, frequency, power and manufacturer's name or trademark should be marked on the outer surface of the electromagnetic coil, and the logo can also be agreed upon according to the user's requirements. Rated voltage of electromagnetic coil:

1. The electromagnetic coil should work normally within the range of rated voltage (110%~85%)V;

2. When the rated voltage is alternating current, it is expressed by Arabic numeral value of the letter AC suffix voltage value, and the alternating frequency is indicated; When the rated voltage is DC, it is expressed by the Arabic numeral value of the letter DC suffix voltage value.

Electromagnetic coil resistance:

1. Unless otherwise specified, the resistance value of the coil is 20℃;

2. The resistance should be within the tolerance range: 5% (when the standard resistance is less than 1000Q) or 7% (when the standard resistance is 21000Q).

Inspection rules for electromagnetic coils:

01. Classification of electromagnetic coil inspection The inspection of electromagnetic coil is divided into factory inspection and type inspection.

1. Ex-factory inspection The electromagnetic coil should be inspected before leaving the factory. Ex-factory inspection is divided into mandatory inspection items and random inspection items.

2. Type inspection ① Type inspection shall be carried out on the products in any of the following cases:

A) During trial production of new products;

B) If the structure, materials and process change greatly after production, the product performance may be affected;

C) When production is stopped for more than one year and production is resumed;

D)) When the factory inspection result is quite different from the type test;

E) When requested by the quality supervision organization.

02, electromagnetic coil determination rules electromagnetic coil determination rules are as follows:

A) If any required item fails to meet the requirements, the product is unqualified;

B) All required and random inspection items meet the requirements, and this batch of products is qualified;

C) If the sampling item is unqualified, double sampling inspection shall be conducted for the item; If all the products with double sampling meet the requirements, all the products in this batch are qualified except those that failed the first inspection; If the double sampling inspection is still unqualified, the project of this batch of products should be fully inspected and the unqualified products should be eliminated. If the power cord tension test is unqualified, directly determine that the batch of products is unqualified. The coil