The Relay Tester (RT100) is a Secondary Injection Test Set designed for the testing of protective relay equipment. This instrument is intended for use in high voltage substations and industrial environments.

The types of protection relay the portable relay test set (RT100) can be used to test include:

TYPE IEEE No.

• Synchronising Relay * 25
• Under/Over Voltage 27/59
• Directional Power Relay * 32
• Field Relay 40
• Reverse Phase Current * 46
• Reverse Phase Voltage * 47
• Incomplete Sequence 48
• Overcurrent-Ground Fault Relay 50
• Inverse Time Overcurrent Relay 51
• Power Factor Relay * 55
• Voltage Balance * 60
• Ground Detection 64
• Directional Overcurrent Relay * 67
• Phase Angle Out-Of-Step Relay * 78
• Automatic Re-Closing Devices * 79
• Frequency Relay * 81
• Pilot Wire Relay 85
• Lockout Relay 86
• Differential Relay * 87
• Directional Voltage Relay * 91
• Power Directional Relay * 92
• Tripping Relay 94