Generator Protection Bench

Generator Protection Bench

Overview

The Generator Protection Bench is a comprehensive educational platform designed to simulate and study various aspects of generator operation and protection. It integrates key components such as synchronous generators, voltage regulators, protective relays, and fault detection systems. This setup is ideal for hands-on training in power systems, electrical machines, and protective technologies.

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Core Components & Specifications

1. Variable Ohmic Load 

• Type: Three-phase, 1 kW

• Resistance: 3 x 750 Ohm

• Current: 3 x 2 A

• Dimensions: 297 x 456 x 125 mm

• Weight: 8 kg

2. Exciter Voltage Controller with De-Excitation 

• Output: DC 200 V / 2 A

• Inputs: Voltage boosting/decreasing, relay for de-excitation, DC on switch

• Interface: Incremental rotary encoder, push buttons

• Power Supply: 230 V, 50/60 Hz

• Dimensions: 297 x 228 x 190 mm

• Weight: 5 kg

3. Universal Power Supply

• Input: 3x 230/400V, 50/60Hz

• Output: 3x 0-450V AC, 0-250V DC

• Current: 2 A

• Safety: Integrated motor protection switch (1.8–2.5 A)

4. Three-Phase Synchronous Machine (Smooth Core Rotor) 

• Power: 0.8 kW

• Voltage: 400/230 V, 50 Hz

• Current: 1.5 A / 2.6 A

• Speed: 1500 rpm

5. Energy Monitor

• Measures: Voltage, current, power (active/reactive/apparent), energy, frequency, power factor

• Voltage: up to 576 V, Current: 5 A

• Display: Backlit graphic screen

• Power: 110-230 V, 50/60 Hz

6. Transformer/Generator Differential Protection Relay

• Functions: ANSI 87T, 87TN, 50P/51P, 46, 49T, Inrush, 50N/51N, 50BF, 74TC, 60L

• Application: Overcurrent, earth fault, differential, overload, unbalance protection

7. Multi-Function Relay Controller

• Control: Synchronisation, voltage, frequency, power, power factor, active/reactive power

• Protection: ANSI 27, 59, 81O/U, 32, 32R/F, 46, 50, 51, 50G, 55, 78, ROCOF

• Interface: USB, membrane keyboard, LCD display

• Outputs: Relay manager (3 floating relays)

• Inputs: 4-mm safety sockets

8. Rotor Earth-Fault Relay

• Voltage: Nominal 400 V, Relay 24 V

• Contacts: 1 NO, 1 NC

• Indicators: Buzzer, LED lamps

• Controls: Test and reset buttons 

9. Shaft End Guard 

• Power: 0.3 kW

• Material: Black steel plate with edging

• Dimensions: 115 x 90 x 30 mm (HxWxD)

• Weight: 0.1 kg

10. Coupling Guard with LED Lighting 

• For 1 kW machines

• Transparent polycarbonate construction

• Integrated LED lighting

• Dimensions: 160 x 105 x 110 mm (HxWxD)

• Weight: 0.2 kg

11. Rubber Coupling Sleeve 

• Material: Neoprene rubber with internal ring gear

• Dimensions: 40 x 58 mm (Length x Diameter)

• Weight: 0.1 kg

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Applications

• Hands-on training in generator protection and synchronisation

• Study of fault conditions and relay responses

• Testing and analysis of machine behavior in power system operations

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Target Audience

• Technical and vocational institutions

• University electrical engineering departments

• Industrial training centers and power companies