HT EASYTEST - User Manual

Need help?

Do you have a question about the HT EASYTEST and is the answer not in the manual?

Overview

Function Description
Important Technical Specifications
Usage Features
Maintenance Features

The EASYTEST-COMBI519 is a versatile electronic measuring instrument designed for verifying the safety of electrical systems in compliance with IEC/EN61557, BS7671 17th and 18th editions, and IEC/EN61010 guidelines. It offers a comprehensive suite of functions for testing various aspects of electrical installations.

Function Description:

The instrument provides a wide range of measurement capabilities, including:

AUTO (Automatic Test Sequence): Performs an automatic sequence of Ra (overall earth resistance without RCD tripping), RCD (tripping current and time for General RCDs of type A/F, AC, or B/B+), and MΩ (insulation resistance with test voltages from 50V to 1000V DC) measurements.
DMM (Digital Multimeter Function): Measures real-time TRMS values of Phase-Neutral (P-N), Phase-PE (P-PE), Neutral-PE (N-PE) voltages, and frequency.
RPE (Continuity of Protective Conductors): Tests the continuity of earth, protective, and equipotential conductors with a test current greater than 200mA and an open-circuit voltage between 4V and 24V. It supports STD (standard) and TMR (timed) modes, and offers compensation for cable resistance.
LoΩ (Continuity of Protective Conductors with 10A): Measures the resistance of protective and equipotential conductors with a test current greater than 10A, requiring the optional EQUITEST accessory. This function uses a 4-wire method, eliminating the need for preliminary cable calibration.
MΩ (Measurement of Insulation Resistance): Measures insulation resistance with continuous test voltages of 50V, 100V, 250V, 500V, or 1000V DC. It supports MAN (manual), TMR (timed, including DAR and PI tests), and AUTO (automatic sequence) modes.
RCD (Test on Differential Switches): Performs tests on molded-case standard, General, and Selective RCDs of type A/F, AC, B/B+, and DD, up to 1000mA. It measures tripping time, tripping current, and contact voltage. Modes include AUTO, x½, x1, x5, and ramp test.
LOOP (Line/Loop Impedance and Overall Earth Resistance): Measures line/fault loop impedance (P-N, P-P, P-E) and calculates prospective short-circuit current. It also measures overall earth resistance without RCD tripping (Ra) and checks the breaking capacity of magnetothermal protections (MCB) and fuses, as well as protection against indirect contacts.
LoZ (Line/Loop Impedance with High Resolution): Measures line/loop impedance (L-N, L-L, L-PE) with high resolution (0.1mΩ) and calculates prospective short-circuit current, requiring the optional IMP57 accessory.
1,2,3 (Phase Sequence and Phase Concordance Test): Indicates phase sequence using a 1-wire method, by direct contact with live parts.
ΔV% (Voltage Drop of Mains): Evaluates the percentage voltage drop between two points of the mains, comparing it to specified limit values. It supports L-N and L-L modes, and can use the optional IMP57 for high-resolution measurements.

Important Technical Specifications:

AC TRMS Voltage: Range 15 ÷ 460V, Resolution 1V, Accuracy ±(3%rdg + 2dgt).
Frequency: Range 47.50 ÷ 52.50 / 57.00 ÷ 63.00Hz, Resolution 0.01Hz, Accuracy ±(0.1%rdg + 1dgt).
Continuity of Protective Conductor (RPE): Range 0.00 ÷ 1999Ω, Resolution 0.01Ω (0.00-9.99Ω), 0.1Ω (10.0-99.9Ω), 1Ω (100-1999Ω), Accuracy ±(5.0%rdg + 3dgt). Test current >200mA DC up to 5Ω. Open-circuit voltage 4 < V0 < 24VDC.
Insulation Resistance (MΩ): Test voltages 50V, 100V, 250V, 500V, 1000V. Ranges from 0.01MΩ to 1999MΩ with varying resolutions and accuracies (e.g., ±(2.0%rdg + 2dgt) for lower ranges, ±(5.0%rdg + 2dgt) for higher ranges). Rated measuring current >1mA.
Line/Loop Impedance: Range 0.01 ÷ 199.9Ω, Resolution 0.01Ω (0.01-9.99Ω), 0.1Ω (10.0-199.9Ω), Accuracy ±(5%rdg + 3dgt). Max test current 3.31A (at 265V), 5.71A (at 457V).
First Fault Current – IT Systems: Range 0.1 ÷ 999mA, Resolution 0.1mA (0.1-0.9mA), 1mA (1-999mA), Accuracy ±(5%rdg + 1dgt).
Contact Voltage (measured during RCD and Ra test): Range 0 ÷ Ut LIM, Resolution 0.1V, Accuracy -0%, +(5.0%rdg + 3V).
Phase Rotation: Voltage range P-N, P-PE 100 ÷ 265V, Frequency range 50Hz/60Hz ± 5%.
Safety: IEC/EN61010-1, IEC/EN61010-2-030, IEC/EN61010-2-033. Measurement category CAT IV 300V to earth, max 415V between inputs.
EMC: IEC/EN61010-2-034, IEC/EN61557-1.
Mechanical Protection: IP40.
Dimensions (L x W x H): 225 x 165 x 75mm.
Weight (batteries included): 1.2kg.
Display: COG Black/white graphic LCD, 320x240pxl.
Power Supply: 6x1.5V alkaline AA LR06 MN1500 batteries or 6x1.2V rechargeable NiMH AA batteries.
Battery Life: > 500 tests.
Auto Power OFF: After 10 minutes of idling (if activated).

Usage Features:

Intuitive Interface: The instrument features an LCD display and a keyboard with dedicated keys for navigation (arrow keys), selection (SAVE/ENTER), starting/stopping measurements (GO/STOP), accessing help (HELP), and returning to the main menu (ESC/MENU).
Multi-language Support: Users can select the operating language from a list of options (English, Italian, Spanish, German, French, Portuguese).
Customizable Settings: Electrical system parameters (nominal voltage, frequency, system type, distribution, contact voltage limit, RCD current visualization, RCD/RCCB option, Isc Factor) can be configured.
Auto Start Feature: For RCD and LOOP functions, the instrument can automatically start tests after detecting a steady input voltage, eliminating the need for manual initiation after the first test.
Data Storage: Up to 999 measured values can be saved, recalled, and deleted. Saved data can be associated with up to three levels of numeric markers (e.g., Installation, String, Module) and a 30-digit comment.
PC Connectivity: The instrument can be connected to a PC via an optical/USB cable (C2006) for data transfer using dedicated management software.
Online Help: The HELP key provides access to online help and displays possible connections for each selected function.
Display Backlight: The display backlight can be adjusted for better visibility.
Test Lead Calibration (ZEROLOOP): For LOOP measurements, the instrument allows preliminary calibration of test cables to automatically subtract cable resistance, ensuring accurate results.

Maintenance Features:

Battery Replacement: The instrument is powered by 6x1.5V AA alkaline batteries. A low battery symbol indicates when replacement is needed. The manual provides instructions for safe battery replacement by qualified technicians.
Cleaning: The instrument should be cleaned with a soft, dry cloth. Avoid using wet cloths, solvents, or water.
Storage: For long-term storage, batteries should be removed to prevent liquid leaks. The instrument should be stored in normal environmental conditions to ensure precise measurements.
End of Life: The instrument and its accessories must be collected separately and disposed of correctly, as indicated by the WEEE symbol.
Warranty and Service: The instrument is warranted against material or manufacturing defects. Repairs due to incorrect use, non-compatible appliances, improper packaging, unauthorized interventions, or use outside specifications are not covered. The manual advises checking batteries and cables and consulting the manual for troubleshooting before contacting After-sales Service.