IEC 60255-16:1982

FOREWORD
PREFACE
SECTION ONE - GENERAL AND DEFINITIONS
Clause
1 Scope
2 Definitions
   2.1 Source impedance Zs
   2.2 Steady-state characteristic
   2.3 Dynamic characteristic
   2.4 Transient characteristic
SECTION TWO - REQUIREMENTS
3 Standard values
   3.1 Input and auxiliary energizing quantities and
        frequency
   3.2 Characteristic quantity
   3.3 Specified times
   3.4 Standard reference values of influencing quantities
        and factors and standard values of their nominal
        and extreme ranges
   3.5 Values of the limits of the operative range of the
        auxiliary energizing quantities
4 Methods of presenting relay characteristics and performance
   4.1 Operating characteristics
   4.2 Resetting characteristics
   4.3 Operating times
   4.4 Resetting times
5 Thermal requirements
6 Accuracy
7 Mechanical requirements
8 Rated burden
9 Shock and vibration
10 Contact performance
11 Insulation requirements
12 Marking and data
13 High-frequency disturbance tests
SECTION THREE - TEST METHODS
14 General requirements
15 Test circuits and methods for determining relay
   characteristics, performance and accuracy
   15.1 Tests for determining steady-state characteristics
   15.2 Tests for determining the dynamic characteristics
        and operating times
16 Tests for thermal requirements
17 Tests for mechanical requirements
FIGURES

Specifies the general requirements for impedance measuring relays. Covers test methods and methods of presenting relay characteristics and performance.