New BOSCH expert measuring instruments: for precise and safe electrical work

Measuring instruments adapted to the constraints of the construction site

The EXPERT range is designed for electricians, maintenance teams, and technicians working on electrical systems. The three new devices cover common diagnostic and control needs.

These instruments allow us to measure the essential quantities of an electrical circuit: voltage, current, resistance or frequencyThey are integrated into the verification processes mandated by safety standards, particularly overvoltage categories. CAT III and CAT IV, defined by the IEC 61010 standard.

In practice, these tools are used during the commissioning of installations, troubleshooting or periodic control of electrical equipment, for example in distribution cabinets or HVAC systems.

One operational limitation remains to be considered: the accuracy of measurements depends on the conditions of use, particularly in the presence of electromagnetic disturbances or load variations.

EXMC600-17 clamp meter for non-interrupting measurements

The EXMC600-17 clamp meter allows current measurement without opening the circuit, a key advantage for ensuring continuity of service. It supports AC and DC currents up to 600 A.

It incorporates several complementary functions:

• voltage measurement up to 600 V
• resistance up to 60 MΩ
• microamperes and frequency
• Temperature via type K probe from -40 to +400 °C

Function TrueRMS It guarantees reliable measurements, including on non-sinusoidal signals. This is essential in modern installations incorporating variable speed drives or electronic power supplies.

"Thanks to its True RMS function, it performs highly reliable measurements without the need to open electrical circuits."

Its IP54 protection rating and 2m drop resistance make it suitable for construction site environments. The integration of non-contact voltage detection facilitates rapid diagnostics.

EXDM600-17 multimeter for complete diagnostics

The EXDM600-17 multimeter is positioned as a versatile tool for electrical testing operations. It covers a wide range of measurements:

• AC/DC voltage and current
• resistance and capacity
• diode test
• low impedance (LoZ)

The LoZ function helps prevent phantom voltages, which are common in complex installations. This improves the reliability of diagnostics, particularly during renovation work.

"It has protection against power outages that prevents it from operating when the battery compartment is open."

The reinforced housing, conforming to an IP65 rating, protects the device against dust and water splashes. This level of protection is suitable for construction site conditions, but requires regular maintenance of the connections to guarantee accuracy.

A common example of use is the control of an electrical panel in a commercial building, where the multimeter allows several parameters to be checked simultaneously before being put back into service.

EXVT1000-17 Voltage Tester for Safe Verification

The EXVT1000-17 tester meets a key requirement: verifying the absence of voltage before intervention. It complies with the standard IEC EN 61243-3:2014, reference for voltage absence verification (VAT) devices.

It allows:

• voltage detection up to 1000 V
• continuity and diode test
• frequency and low voltage measurement

The device signals the presence of voltage via visual, audible, and vibrating signals. This redundancy improves on-site safety, particularly in noisy environments.

"Its integrated self-test function ensures the tool is working correctly and offers additional protection to the user."

The 1,25 m cable facilitates measurements inside electrical cabinets. Its robustness, combined with an IP65 rating, makes it ideal for demanding construction sites.

An important nuance: even with a compliant tester, the electrical lockout procedure must be followed, including switching off, locking out and verification.

A response to the requirements of safety and precision

These three instruments are part of a strategy to ensure the safety of electrical interventions. They cover the main stages of control: detection, measurement and validation.

Their robust design and advanced features meet the needs of professionals, while remaining compatible with field constraints. Their effectiveness, however, depends on proper handling and adherence to professional protocols, particularly by design offices and implementation teams.

In a context of increasingly complex electrical installations, these tools help to make maintenance operations more reliable and to limit risks for those involved.