V1431-1 Universal Relay Trainer

Description

V1431-1 Universal Relay Trainer is intended for practical training in static relays and relay protection engineering for applications in power systems.

The Universal Relay Trainer MV 1431-1 is an integrated training system including different kinds of static relays, which are common in relay protection systems around the world.

The static relays used in the experiment unit belong to the well-known ABB COMBIFLEX relay system.

The Universal Relay Trainer MV 1431-1 does not only include static relays, it also contains a current transformer, a voltage transformer and an internal power supply. These components are all fitted into a sturdy steel cabinet with a front panel on which all sub units can be connected using either 4 mm safety sockets or 2 mm signal plug terminals. The choice of 2 mm signal plug terminals makes the unit compact and suitable for experiments with the trainer standing on a table.

Mimic diagrams of the relays with large clear symbols are printed on the front panel. Sockets are also provided for test objects.

The rack carries a selection of the static relays used in modern electric power systems.

Following relays are provided:

  1. Microprocessor operated double over- and undervoltage relay
  2. Microprocessor operated double over current relay
  3. Microprocessor operated multi-function directional / reverse power relay
  4. Instantaneous over current relay
  5. Two types of auxiliary output relays
  6. Multirange time-lag relay
  7. Flag / signal relay, double unit

Built-in are also:

  • One current transformer
  • One voltage transformer
  • Internal power supply

The laboratory manual for the Universal Relay Trainer MV 1431-1 covers from basic operation principles of each relay up to giving an introduction to the theory and the practical handling of typical situations where static relays are used to protect certain objects in for instance a power plant.

The protected object may for example be a transformer, a generator, a bus bar or a feeder.

The focus of the proposed experiments is not only the different measuring relays, but the surrounding auxiliary relays are also described and used to build a relay protection.

From the basic operation principles, which can be understood by the experiments, the students obtain knowledge about how relay protection systems are built and how they will work in different situations.

Experiment Manual

  1. Introduction
  2. Identifying the Relays
  3. Auxiliary Equipment
  • Auxiliary relay
  • Signal/flag relay
  • Current measuring relay, classic
  • Current measuring relay, double
  • Voltage measuring relay, double
  • Power measuring relay
  • Multifunction time relay
  • Tripping relay
  1. Basic Experiments
  • Operating the tripping relay
  • Operating the signal relay
  • Operating the current relay
  • Time delay of the tripping relay
  • Time delay of the current relay

 

Technical data

Supply voltage

220-240 V, 50 Hz, 1-ph

MV1431-1 can also be delivered for 60Hz supply

Dimensions:

510 x 280 x 570 mm

Weight:

30 kg

  1. Modern Multifunctional Time Relay
  • Time relay at DC-operation
  • Time relay at AC-operation
  • Time relay together with measuring current relay
  1. Double Overvoltage Relay
  • Get familiar with the relay
  • Define time over/under voltage function
  • Inverse time over voltage function
  • The instantaneous over voltage function
  • The influence of voltage transformers
  1. Double Over Current Relay
  • Get familiar with the relay
  • Define time over current function
  • Inverse time over current function
  • The instantaneous over current function
  • The influence of current transformer
  1. Operating the Reverse Power Relay
  • Background and principle diagram
  • The phase lag circuit
  • Reverse power caused by low current
  • Reverse power caused by low voltage
  • Reverse power caused by the angle between the current and the voltage
  • Reverse power setting
  • Reverse power in unstable system
  1. Advanced Experiments
  • Earth-fault protection (95%)
  • Earth-fault protection using a current measuring relay
  • Differential protection
  • Reverse power / Loss of synchronization protection

Recommended peripheral equipment for MV1431-1

Cat. Code

Description

pc

page

Accessories for MV 1431-1, Basic and Medium Level :

MV1103

Variable Transformer, 3-phase

1

20

MV1429

Terminal Board

1

30

MV1500

Load Switch, 3-pole 16A

1

30

MV1918-1

Digital Timer 1 ms-99.99 s

1

26

MV1957

Rheostat 200 W 5 Ohm 6.3 A

1

23

MV1963

Rheostat 500 W 2500 Ohm 0.45 A

2

23

MV1971

Differential Probe

2

26

MV1830-HF

Flex Set, 100 Safety Leads, Safety Plugs

1

33

MV1904

Flex Stand

1

33

DM9C*)

Digital Multimeter

3

23

MAT220349*)

Digital Clamp Meter AC / DC current

1

24

Accessories for MV 1431-1, Extended Level in addition to the Basic and Medium Level :

MV1957

Rheostat 200 W 5 Ohm 6.3 A

1

23

MV1400

Push Button Panel

1

30

MV1402

Contactor

1

31

MV1931

Current Transformer

2

30

MV1911

Transformer, 1-phase 1 kVA 50-60 Hz

1

10

MV1915

Transformer, 3-ph 2 kVA 50-60 Hz

1

10

MV1420

Line Model 3-phase, 230 V 3-phase

1

6

MV1100-235

Load Resistor 3-ph 3.3 kW

1

21

DM9C*)

Digital Multimeter

1

24

MAT220349*)

Digital Clamp Meter AC / DC current

1

24

Accessory for MV 1431-1, Advanced Level In addition to the levels above :

MV1305-405-235

Mobile Motor Generator Unit

1

18-19

*) Equivalent instruments can be delivered and used

Transmission, Transformer & Protection Lab