In an Electrical Power System currents and voltages must be monitored constantly to make sure that the values remain within the required limits. This will also switch off the faulty sections from the main supply network.
It is important to identify the fault and to isolate the faulty section automatically from the network because this will result in collapse of the entire electrical power system. These protection systems need to be fast and reliable in events of fault in order to avoid any large scale damage. It is important that the protection system identifies and isolates the faulty section without affecting the remaining power system.
A number of protective relays are analyzed: under/over voltage time relays, definite time over-current relays, inverse time over-current relays, combined over-current and earth-fault relay, directional relay and earth-fault relays.
List of Electrical Power Trainer
Description | Module | Qty |
Variable Three-Phase Power Supply
|
IT-6000 | 1 |
Line Model
|
IT-6002 | 1 |
Three-Phase Transformer
|
IT-6003 | 1 |
Resistive Load
|
IT-6004 | 1 |
Inductive Load
|
IT-6005 | 1 |
Experiment Transformer (0-250 V @ 5 A)
Outputs:
|
IT-6016 | 1 |
Three-Phase Power Supply
|
IT-6017 | 1 |
Power Circuit Breaker with Integrated PLC
|
IT-6019 | 1 |
CT Load
|
IT-6023 | 1 |
VT Load
|
IT-6024 | 1 |
Under/over Voltage Time Relay
|
IT-6025 | 1 |
Definite Time Over-Current Relay
|
IT-6027 | 1 |
Combined Over-Current and Earth-Fault Relay
|
IT-6028 | 1 |
L/C Loads
|
IT-6030 | 1 |
Numerical Control Voltage, Frequency & Earth Fault Control Relay (3-Phase)
|
IT-6031 | 1 |
Moving Coil Ammeter (1000mA)
|
IT-6034 | 4 |
Moving Coil Ammeter (2.5A)
|
IT-6035 | 1 |
Moving Iron Ammeter (5A)
|
IT-6036 | 2 |
Moving Iron Voltmeter (500V)
|
IT-6038 | 4 |
Single-Phase Current Transformer
|
IT-6043 | 1 |
Three-Phase Current Transformer
|
IT-6044 | 1 |
Single-Phase Voltage Transformer
|
IT-6045 | 1 |
Three-Phase Voltage Transformer
|
IT-6046 | 1 |
Summation Current Transformer
|
IT-6047 | 1 |
Base Frame
|
IT-2L | 1 |
Leads (Accessory)
|
IT-ACC | 1set |
Expansion Module (optional):
IT-6059
- Differential Transformer Relay : 1pc
IT-6044
- Three Phase Current Transformer : 2pcs
IT-6058
- Feeder Manager Relay : 1pc
IT-6074
- Over/Under Frequency Relay : 1pc
IT-6075
- Synchronous Check Relay : 1pc
Experiments with Expansion Module:
- Definite time over current protection.
- Inverse time over current protection.
- Earth fault
- Transformer differential protection.
- Directional Earth Fault
- Distance Earth Fault
- Over/Under Frequency Protection
- Synchronization Check