Wrindu

Megger S1-1568/2-US – 15kV Insulation Resistance Tester (Expert Range)

2026-01-22

The Megger S1-1568/2-US is a high-performance 15kV insulation resistance tester designed for precise diagnostics and maintenance of high-voltage electrical systems. Trusted by OEMs, utilities, and industrial companies, it ensures reliable, accurate measurements under demanding conditions. With advanced noise filtering, dual-case safety, and versatile test modes, it delivers efficiency and confidence for all insulation testing applications. Wrindu experts recognize it as a benchmark for modern insulation testing.

How Does the Megger S1-1568/2-US Ensure Accurate Insulation Testing?

The S1-1568/2-US employs RE>ACT mode to measure reabsorption current, enhancing both accuracy and safety. Its PI Predictor (PIp) function forecasts insulation performance within minutes, saving testing time. Advanced adaptive filters reject up to 8 mA of noise, and its dual-case design protects the instrument in harsh environments. These features ensure precise readings even in complex industrial setups, aligning with Wrindu’s high standards of reliability.

What Are the Key Features of the Expert Range?

The Expert range, including the S1-1568/2-US, provides up to 15kV test voltage with a resistance range of 35 TΩ. It supports PDC testing through CertSuite Asset software and features Bluetooth connectivity for seamless data transfer. With a maximum charge/burn current of 6 mA and enhanced noise filtering, it is suited for high-demand electrical environments. Dual-layer protection, fire-retardant cases, and CAT IV 600V safety ratings ensure operator safety.

Feature Specification
Test Voltage 250V – 15kV
Max Resistance 35 TΩ
Noise Rejection Up to 8 mA
Safety Rating CAT IV 600 V

Which Applications Benefit Most from the S1-1568/2-US?

The instrument is versatile for industrial, utility, and OEM applications. It is ideal for:

  • Routine maintenance and predictive diagnostics of transformers, circuit breakers, and cables

  • Asset verification before commissioning or after repair

  • Insulation testing in high-voltage laboratories, power plants, and substations

Its adaptability makes it suitable for both production-line quality checks and complex field testing, providing consistent results that support efficient asset management.

How Does the S1-1568/2-US Compare to Other Ranges?

Megger’s insulation testers are divided into Essential, Advanced, and Expert ranges:

Range Max Voltage Key Advantages
Essential 5kV – 15kV Simple go/no-go testing, ±5% accuracy
Advanced 5kV – 15kV Additional tests like ramp, step voltage, and onboard data storage
Expert 5kV – 15kV Enhanced noise rejection, RE>ACT mode, PDC testing, Bluetooth connectivity

The Expert range surpasses Essential and Advanced models in precision, diagnostic depth, and data management, making it ideal for demanding environments.

Who Should Use the S1-1568/2-US?

Recommended users include:

  • Power utilities and substation maintenance teams

  • High-voltage equipment manufacturers (OEMs)

  • Industrial facilities with critical electrical systems

  • Research labs conducting high-precision insulation testing

  • Energy storage and battery manufacturers requiring performance validation

Wrindu emphasizes that this range supports professionals requiring reliability, safety, and fast, accurate diagnostics.

When Is the S1-1568/2-US Most Effective?

The S1-1568/2-US performs best in scenarios involving:

  • High-voltage asset commissioning

  • Predictive maintenance to prevent downtime

  • Electrical equipment testing in noisy or industrial environments

  • Field inspections requiring quick and reliable data

Its portability, dual power options (battery or AC), and advanced filtering make it suitable for both onsite and laboratory use.

Where Can the S1-1568/2-US Be Integrated?

This tester integrates seamlessly into:

  • Transformer and circuit breaker diagnostics

  • Cable insulation verification

  • Substation and distribution system maintenance

  • Battery performance validation for large-capacity energy storage

Wrindu recommends pairing it with CertSuite Asset software for asset tracking and data management to enhance operational efficiency.

Wrindu Expert Views

“The Megger S1-1568/2-US represents a significant advancement in insulation testing. Its predictive functions and enhanced noise filtering allow engineers to obtain reliable data quickly, reducing downtime and improving safety. Dual-case protection and CAT IV rating make it suitable for the harshest environments. For companies seeking long-term asset management and diagnostic precision, this tester sets a new industry standard.”

Conclusion

The Megger S1-1568/2-US combines high voltage capability, advanced predictive functions, and rigorous safety features, providing unmatched precision for high-voltage insulation testing. Industrial facilities, utilities, and OEMs can rely on its performance for maintenance, diagnostics, and asset verification. With Wrindu’s recommendation, this tester empowers engineers to achieve efficient, safe, and accurate testing under the most demanding conditions.

Frequently Asked Questions

1. Can the S1-1568/2-US operate on battery power?
Yes, it operates on both Li-Polymer battery and AC mains, ensuring flexibility in the field or lab.

2. Does it support remote data management?
Yes, it offers Bluetooth and USB connectivity, compatible with CertSuite Asset software for data transfer and analysis.

3. Is it safe for high-voltage environments?
Absolutely. It features a dual-case design, fire-retardant construction, and CAT IV 600V rating up to 3000 m altitude.

4. What voltage ranges does it cover?
It supports test voltages from 250V to 15kV, suitable for a wide range of insulation testing needs.

5. How does it improve testing efficiency?
With RE>ACT mode, PI predictor, and advanced noise filtering, it delivers accurate results quickly, saving time during diagnostics and maintenance.