The PC Based Portable Overload Relay Functional Trip Tester is designed for panel builders, electrical consumers, and maintenance teams who need a practical way to verify thermal overload relay trip health during incoming inspection and preventive maintenance.

Item Code: 1906261905
Description: PC based portable functional trip tester for overload relay trip time, test current, I2t, and auxiliary contact status checking.

Purpose:

This tester is intended for practical workshop checks where the user wants to confirm that a thermal overload relay trips under a controlled over current condition and that its auxiliary trip contact changes state correctly.

Typical Applications:

• Incoming quality inspection of purchased thermal overload relays
• Preventive maintenance checks of spare or removed overload relays
• Functional trip checking before panel assembly
• Random health verification as part of maintenance schedules
• Maintenance workshop and panel shop use

Key Capabilities:

• User-selectable AC test current up to 60A
• Test by multiple of overload relay Ir or by direct current entry
• Common test selections such as 1.5 x Ir and 7.2 x Ir, subject to current range
• Automatic current control through PC software
• Trip time measurement and I2t recording
• TRMS current measurement feedback
• Overload relay auxiliary NC contact monitoring
• Provision for testing all three overload relay poles in series

Test Philosophy:

The operator can enter the overload relay Ir setting and select a required test multiple, or directly enter the desired test current in amperes. The tester raises current to the selected target, monitors the overload relay auxiliary contact, records trip time and I2t, and stops current after trip.

The maximum available test current is 60A. Higher multiples such as 7.2 x Ir can be used for lower-current overload relay ranges where the required current is within tester capacity.

PC Software Operation:

• Test setup with Ir, test multiple, or direct current entry
• Live current and test status display
• Automatic trip detection from overload relay auxiliary contact
• Trip time and I2t result display
• Result storage or export as required by customer workflow

Contactor Testing Provision:

Where the overload relay is mounted below a contactor, the tester provides a provision to switch the external contactor coil supply during the test. The customer connects the required coil supply externally as per the contactor coil rating.

Technical Configuration:

• Dimensions: 19-inch rack-mount, 5U
• Input supply: 230 VAC, 1 phase, 50 Hz
• Test current output: Up to 60A AC
• Test voltage: Low-voltage AC current source
• Current measurement: TRMS current feedback
• Trip measurement: Trip time and I2t
• Operator interface: PC software
• Safety: Emergency switch, safety healthy indication, fused input, and earthing

The PC Based Portable Overload Relay Functional Trip Tester is useful for organisations that purchase overload relays, build electrical panels, and need a repeatable incoming inspection and preventive maintenance check with measured trip response records.

Download brochure: PC Based Portable Overload Relay Functional Trip Tester Brochure