IEC 60418-4:1976
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Variable capacitors. Part 4: Type specification for variable pre-set capacitors Type C
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
09-12-2022
English - French
01-01-1976
FOREWORD
PREFACE
SECTION ONE - GENERAL
Clause
1 Scope
2 Object
3 Terminology
SECTION TWO - GENERAL REQUIREMENTS FOR TESTS, MARKING
AND IEC TYPE DESIGNATION
4 Test conditions
4.1 Standard atmospheric conditions for testing
4.2 Methods of mounting
4.3 Test samples
4.4 Schedule for type tests
4.5 Classification into categories
4.6 Marking
4.7 IEC type designation
SECTION THREE - METHODS OF TEST
5 Visual examination
6 Dimensions and effective angle of rotation
7 Capacitance
8 Blacklash
9 Tangent of the loss angle
10 Insulation resistance
11 Voltage proof
12 Rotor contact resistance
13 Temperature coefficient
14 Capacitance drift
15 Operating torque
16 Locking
17 Locking torque proof
18 End stop torque
19 Thrust and pull (axial)
20 Side thrust
21 Robustness of temperature
22 Rapid change of temperature
23 Soldering
24 Impact
25 Vibration
26 Climatic sequence
27 Damp heat (steady state)
28 Corrosion
29 Endurance
30 Sealing (normal conditioning)
31 Sealing (extended conditioning)
32 Capacitance drift after adjustment
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