EV Charging Station Testers

Simplify EV Charging Station Testing with Triplett EVSE Testers

Triplett’s EVSE testing equipment enables precise diagnostics of charging infrastructure by checking:

• Voltage and frequency
• Grounding and insulation resistance
• Control Pilot (CP) and Proximity Pilot (PP) states
• Phase sequence and loop impedance
• Error states including open ground or improper wiring
• PWM signal integrity for handshake verification

These tests are essential for confirming that electric vehicle supply equipment (EVSE) is safe, compliant, and delivering the expected power.

Our EV Charging Tester Lineup

TEV200 – EVSE Probe Kit: The TEV200 EV Probe Kit is a compact and modular EV testing tool designed for use with digital multimeters, clamp meters, or multifunction testers. It enables simulation of various EV charge states with built-in Control Pilot (CP) and Proximity Pilot (PP) features. The unit also includes oscilloscope terminals for waveform analysis and CP/PE short circuit simulation to detect error conditions. Supplied with an IEC62196-2 Type 2 adapter compatible with Tesla connectors, the TEV200 is ideal for quickly testing EV charging points during field inspections or installations.

TEV300 – Electric Vehicle Charging Tester: The TEV300 is a standalone EVSE tester built for fast diagnostics with clear LED indicators. It supports Type 1 connectors and simulates common vehicle states and error conditions such as grounding issues or CP faults. With built-in CP/PP simulation and GO/NO-GO wiring diagnostics, it provides a simple yet effective interface for socket inspection and output testing. Compatible with SAE J1772 standards, the TEV300 is perfect for technicians who need to verify EV charging station performance quickly and reliably.

TEV500 – Pro EV Charging Station Test Kit: The TEV500 is Triplett’s most advanced EVSE tester, offering comprehensive diagnostics for professional-grade electric vehicle testing. It supports full CP and PP simulation across States A to D, includes insulation resistance checks and PE pre-tests, and features a CCID trip test to validate GFCI safety. Oscilloscope output terminals are available for analyzing CP signal waveforms. Designed for use with both 120V/208V and 240V systems, the TEV500 is the best EVSE test box for commissioning teams, installers, and certified electricians who demand precision and performance.

What is an EVSE Tester?

An EVSE tester (Electric Vehicle Supply Equipment tester) is a diagnostic tool designed specifically to test and verify the performance, safety, and functionality of electric vehicle charging stations. Unlike general-purpose electrical testers, EVSE testers simulate the presence of an electric vehicle by replicating charging states and monitoring the response of the EVSE system. This includes testing key components like the Control Pilot (CP) and Proximity Pilot (PP) lines, which manage communication between the charger and the vehicle.

EVSE testers are essential for professionals involved in the installation, inspection, and maintenance of EV charging infrastructure. They help identify common issues such as grounding faults, voltage irregularities, CP signal errors, and insulation breakdowns. Many testers, like those from Triplett, support advanced features including waveform output for oscilloscope analysis, RCD trip testing, and compatibility with both Type 1 and Type 2 connectors. By using an EVSE tester, technicians can ensure that charging stations are operating safely, efficiently, and in compliance with industry standards.

Why Use EVSE Testers?

Safety Verification: A certified EVSE tester detects potential hazards like open grounds, CP errors, insulation failures, and voltage imbalances, helping prevent electrical accidents.

Performance & Efficiency: Accurate testing ensures the charger delivers the correct current and voltage to support optimal EV charging speeds.

Preventive Maintenance: Regular testing identifies issues early, reducing the risk of expensive equipment failures and minimizing charger downtime.

Enhanced User Experience: For EV owners and fleet operators, functional and safe chargers mean reliable uptime and faster turnaround.

When Should You Test EV Charging Points?

• Inconsistent charging times or slow charging
• Error messages on the charger screen
• Visible wear and tear like frayed cables or corrosion
• Overheating or buzzing sounds during operation

These are all signs your EV charging station needs testing.

Do EV Charging Station Testers Require Calibration?

Yes. To ensure measurement accuracy, EV testing equipment like Triplett’s testers should be calibrated at least once a year. This ensures reliable diagnostics and traceability—especially critical for public installations and compliance documentation.