It presents redundant de-excitation protection problem,and introduces the system which is make up of DMX(Machinery field breaker)DDL(Electronic break er),and ZnO(Nonlinear resistor) in detail.

• 详细介绍了由DMX(磁场断路器)、DDL(电子断路器)和ZnO(非线性电阻)组成的冗余灭磁保护系统。