All products on this website are discounted products, and market prices have been fluctuating. Please refer to customer service quotes for details. Pictures are not actual photos. Before placing an order, please confirm the model, product, price, and other detailed information with customer service. Both second-hand and brand new products are available for sale on this website. Please contact customer service for further communication.
ABB RET670 1MRK002816-AB｜Transformer Protection Relay｜
-
- 1) Main protection
Low impedance transformer differential 87T, built-in second harmonic surge braking and fifth harmonic overexcitation braking
Neutral point zero sequence differential REF 87N, sensitive detection of winding grounding short circuit
Real time alarm locking differential for inter turn short circuit and CT disconnection
2) Complete set of backup protection
5-section quadrilateral phase to phase distance protection 21
Directional/non directional inverse time limit, timed overcurrent, zero sequence 3I0 protection
V/Hz overexcitation protection, thermal accumulation overload protection
Gap zero sequence, compound voltage lockout overcurrent, circuit breaker failure protection 50BF
3) Non electric interface
It can be connected to main switch signals such as gas, pressure release, oil temperature, winding temperature, oil level, etc., and can be separately configured with alarm/trip logic.
- 1) Main protection
There are no reviews yet.