Types BDD15A and BDD16A - Transformer Differential Relays with Percentage and Harmonic Restraint
Transformer Differential Relays with Percentage and Harmonic Restraint - BDD15A, BDD16A
BDD15B/16B Transformer Differential Relay with Percentage and Harmonic Restraint
BDD17B - Transformer Differential Relay with Percentage and Harmonic Restraint
TRANSFORMER DIFFERENTIAL RELAY WITH PERCENTAGE AND HARMONIC RESTRAINT - TYPES: BDD15B, FORMS 11 AND UP - BDD16B, FORMS 11 AND UP
BDD15B and BDD16B - Transformer Differential Relay with Percentage and Harmonic Restraint
TRANSFORMER DIFFERENTIAL RELAY WITH PERCENTAGE AND HARMONIC RESTRAINT - TYPE BDD18B
Type BDD18B - Transformer Differential Relay with Percentage and Harmonic Restraint
BDD and STD Transformer Differential Relays