The relay shows clearly the characteristics of three-phase differential protection.
The relay is housed in a robust enclosure with carrying handle.
The unit mounts on the desk area of the Protection and Relay Test Set or other Power System product.
It connects using a multi-core cable from the back of the relay to the Power System products.
A relay forms the main part of the unit. The lecturer or student sets up different fault circuits on the Protection and Relay Test Set or other Power System product.
This includes high stability during out-of-zone faults, zero-sequence current filtering for each winding, high-speed operation, magnetising inrush restraint, amplitude and vector matching.
They then use the keypad and display on the relay module to program it to the settings needed for the tests.
They can also use the S1 software (supplied) and a suitable computer (computer not included) to program the relay module.
The user then connects the 4 mm shrouded sockets from the relay to the test circuits on the Power System product.
