1 Scope
2 Normative references
3 Definitions
4 Measurement
  4.1 General
  4.2 Current
  4.3 Voltage dividers
5 Control systems
  5.1 General
  5.2 Anti-pumping
  5.3 Auto-reclose with variable reclose time and
      final lock out
  5.4 Line test device
  5.5 Undervoltage close inhibit
6 Protection systems
  6.1 General
  6.2 Protection system for line circuit breakers (L)
  6.3 Protection system for rectifier circuit breaker (R)
  6.4 Direct acting (series trip)
  6.5 Indirect acting
Annex A (informative) Electronic protection relay features
  A.1 Scope
  A.2 Failures
Annex B (informative) Rate of rise and (delta)I relay
        Examples for fault characteristic and setting
        parameter selection
  B.1 Scope
  B.2 Rate of rise detection
  B.3 (delta)I Protection
  B.4 Combined di/dt and (delta)I protection
Annex C (informative) Bibliography on relays in use
Figures