PROTECTION KBCH 120 130 140 Differential Protection for Transformers and Generators Type KBCH relays offer biased differential current t EJ restricted earth fault and overfluxing protection O a R A primarily for the protection of two or three winding power transformers auto transformers or generator transformer units The KBCH provides these features in a very compact and space efficient case size for ease of installation All models are thr
AREVA KBCH 120 130 140 Transformer Differential Protection Relay Service Manual KBCH EN M G11 Service Manual KBCH 120 130 140 CURRENT DIFFERENTIAL RELAYS KBCH 120 130 140 CONTENT Errata Section KBCH EN M G11 Handling of Electronic Equipment Safety Instructions Technical Description Chapter 1 E11 Application Notes Chapter 2 D11 Commissioning Instructions Chapter 3 C11 Commissioning Test Results Chapter 4 C11