DESCRIPTION
This is a teaching unit which gives
students theorical and practical experience with several industrial
relays.It includes experiments investigating earth fault, overcurrent,
differential, circulating current and distance numerical protection. The
unit uses real industrial protection equipment and techniques, not
simulation, and a variety of industrial relays specially adapted for
educational use (see available relays). This unit also covers relay
setting and tripping characteristics, as well as grading and
discrimination under fault conditions, and it allows students to compare
individual relays characteristics and simultaneous comparison of any
two relays tointroduce the topic of discrimination. Instrumentation,
power supplies, transformers and load resistors are incorporated in the
unit and has an user-friendly desk space for users to work on. The
relays are housed in modern, portable enclosures. The test unit will
support up to two relays at once. These can be different relays or both
the same. The relays are programmed either directly or using software,
because this unit includes relays support software which enables users
to program the relays modules on a suitable computer (computer no
included)using software. Student connect the relays to the console by
plugging leads into terminals on the front panels, thus perform
experiments and practices using the unit to set test conditions and
control and monitor relay behaviour. The unit and relay front panels
have schematic diagrams which help users carry out and understand the
experiments.
SPECIFICATIONS
Unit designed for comprehensive investigations into the theory and practice of electrical power system protection.
This unit is common for the relays modules type “ERP” and can use one or more relays.
Anodized aluminium structure. Panels and main metallic elements in stainless steel.
Floor-standing unit enabling wide range of protection relay investigations.
It uses genuine industrial relays, not simulations, with full range of safety features incorporated throughout.
Diagrams on the unit enable students to set up and perform practices and experiments with minimal supervision.
Comprehensive controls, transformers, supplies and instrumentation.
Modern, ergonomic and practical design which includes desk space for users or students to work on, and mounting area for relays.
It is supplied with relay support software.
Selection of up-to-date numerical protection relays, specially adapted for educational use. (See available relays).
Unit controls and instrumentations specifications:
0 to 10 A variable current supply.
0 to 220 V variable voltage supply.
2 fault limiting resistors.
Timed fault application circuit breaker.
Configurable tapped transformer with delta or star secondary.
Variable three-phase load star connected.
Variable three-phase load delta connected.
2 sets of three-phase voltage transformers.
4 sets of three-phase current transformers.
Mains isolator.
Test circuits:
Configurable transformer test circuit.
Relay test area.
Transmission line model (5 x 50 km).
Cables and accessories for normal operation.
Manuals:
This unit is supplied with the following manuals: Required Services, Assembly and Installation, Starting-up, Safety, Maintenance, Practices,
including unit description and procedure.
This unit is common for the relays modules type “ERP” and can use one or more relays.
Anodized aluminium structure. Panels and main metallic elements in stainless steel.
Floor-standing unit enabling wide range of protection relay investigations.
It uses genuine industrial relays, not simulations, with full range of safety features incorporated throughout.
Diagrams on the unit enable students to set up and perform practices and experiments with minimal supervision.
Comprehensive controls, transformers, supplies and instrumentation.
Modern, ergonomic and practical design which includes desk space for users or students to work on, and mounting area for relays.
It is supplied with relay support software.
Selection of up-to-date numerical protection relays, specially adapted for educational use. (See available relays).
Unit controls and instrumentations specifications:
0 to 10 A variable current supply.
0 to 220 V variable voltage supply.
2 fault limiting resistors.
Timed fault application circuit breaker.
Configurable tapped transformer with delta or star secondary.
Variable three-phase load star connected.
Variable three-phase load delta connected.
2 sets of three-phase voltage transformers.
4 sets of three-phase current transformers.
Mains isolator.
Test circuits:
Configurable transformer test circuit.
Relay test area.
Transmission line model (5 x 50 km).
Cables and accessories for normal operation.
Manuals:
This unit is supplied with the following manuals: Required Services, Assembly and Installation, Starting-up, Safety, Maintenance, Practices,
including unit description and procedure.
EXERCISES AND PRACTICAL POSSIBILITIES
- A wide range of practices and investigations into the performance and characteristics of a variety of different industrial relays.
REQUIRED SERVICES
- Electrical supply: 380/415 V three-phase and neutral electrical supply fused at 16 A per phase.
DIMENSIONS AND WEIGHT
- Dimensions: 2500x1000x1800mm
- Weight: 600 Kg.
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