Megger SVERKER 900 Relay Protection and Substation Test System

Overview

The Megger SVERKER 900 Relay Protection and Substation Test System is a portable, three-phase secondary and primary test platform engineered for precision, field resilience, and operational flexibility in high-voltage power systems. Based on a fully isolated, digitally regulated current and voltage source architecture, the SVERKER 900 employs closed-loop feedback control to maintain stable output amplitude, phase, and frequency—regardless of load impedance variation or mains supply fluctuation. Its core measurement and stimulation capability supports manual, semi-automated, and sequence-driven testing of electromechanical, static, and modern digital relays—including IEC 61850-compliant devices—across ANSI, IEEE, and IEC protection function categories (e.g., ANSI 21, 50/51, 59, 67, 79, 87). Designed for use in distribution substations, renewable generation interconnection points, industrial switchyards, and transmission infrastructure, the system meets stringent safety and electromagnetic compatibility requirements defined in IEC 61010-1 (measurement category CAT IV 600 V) and IEC 61326-1 (industrial EMC environment).

Key Features

• Three independently controllable current sources (up to 105 A AC / 10 A DC per channel) and four fully isolated voltage sources (up to 900 V AC / 900 V DC per channel), each adjustable for amplitude, phase angle (0°–360°, 0.1° resolution), and frequency (10 Hz–600 Hz + DC)
• Dedicated busbar simulation via fourth voltage channel to support testing of digital relay logic, GOOSE/SV-based schemes, and IED synchronization
• Integrated binary input (4-channel, programmable as contact closure or voltage sensing) and binary output (4-channel, dry contact rating) for timing, sequence validation, and breaker trip/close simulation
• Self-contained human-machine interface: 5.7-inch resistive LCD touchscreen with intuitive menu navigation, non-volatile memory for test configurations and results, and real-time metering of voltage, current, resistance, impedance, power factor, and phase angle
• Ruggedized mechanical design certified to IEC 60068-2-27 (shock) and IEC 60068-2-6 (vibration); operating range: 0°C to +50°C; storage range: −40°C to +70°C; altitude rating: up to 2000 m
• Onboard test toolboxes—including Time Testing, CT Excitation, Fault-Pre/Fault-During, Ramp-to-Trip, Sequence Generation, and Impedance Plane Testing—with configurable parameters and automatic signal translation from Z-plane coordinates to synchronized V/I waveforms

Sample Compatibility & Compliance

The SVERKER 900 is validated for functional and timing verification of protection relays conforming to ANSI C37.90, IEC 60255, and IEEE C37.112 standards. It supports primary injection testing of circuit breakers, CTs, VTs, and switchgear using direct three-phase or single-phase current/voltage injection methods. Secondary-side applications include polarity verification, CT saturation curve (excitation) analysis, ratio and burden testing, directional element validation, and impedance reach assessment per IEC 60255-151. All outputs meet IEC 61000-4 immunity requirements and are rated for CAT IV 600 V overvoltage protection. The unit carries CE marking under the Low Voltage Directive (2014/35/EU) and Electromagnetic Compatibility Directive (2014/30/EU), and complies with UL 61010-1 third-party certification requirements for field-deployable test equipment.

Software & Data Management

Test configurations, timing logs, waveform captures, and impedance plots are stored internally in non-volatile memory and exported via USB 2.0 in CSV format for post-processing in Excel or third-party analysis tools. Optional SVERKER Viewer PC software (license-based, tied to instrument serial number) enables advanced report generation, comparative analysis across multiple tests, overlay of reference curves (e.g., CT saturation envelopes), and MTT (Multiple Trip Timing) evaluation with statistical deviation reporting. The software supports audit-trail functionality compliant with GLP/GMP documentation practices and integrates with enterprise calibration management systems via standard file interchange protocols. Firmware updates are performed locally via USB or remotely through authorized service channels using encrypted update packages.

Applications

• Commissioning and periodic maintenance of distribution and transmission substations, wind/solar farm interconnection panels, and industrial medium-voltage switchgear
• Functional validation of overcurrent (50/51), distance (21), differential (87), auto-reclosing (79), frequency (81), undervoltage (27), overvoltage (59), and synchrocheck (25) relays
• CT excitation curve (B-H) acquisition and knee-point determination per IEC 60044-1 and IEEE C57.13
• Primary injection testing of circuit breakers and ground-fault detection systems using coordinated three-phase current injection
• SCADA I/O loop checking, binary input/output response timing, and communication interface behavior verification under simulated fault conditions
• Verification of protection coordination logic, including time-current characteristic (TCC) plotting and selective tripping validation

FAQ

What protection functions can the SVERKER 900 test?
It supports manual and guided testing of all major ANSI/IEEE and IEC relay types—including instantaneous and inverse-time overcurrent, distance, differential, voltage-restrained, frequency, and synchrocheck functions—as well as digital IEDs with multi-function logic.
Can it perform primary injection on high-current circuits?
Yes: with up to 105 A per current channel and parallel configuration capability, it delivers sufficient output for primary testing of low- and medium-voltage breakers, bus ducts, and grounding systems.
Is the SVERKER 900 suitable for IEC 61850 environments?
While not a protocol analyzer, its fourth voltage channel enables busbar emulation and synchronized analog stimulus critical for validating GOOSE-triggered logic, sample value dependency, and time-synchronized trip decisions in IEC 61850 substations.
How is calibration traceability maintained?
The unit includes internal self-calibration routines and supports external NIST-traceable calibration using Megger-certified procedures; full calibration records and uncertainty budgets are retained with each firmware revision.
Does it support automated test scripting?
The base unit operates in manual and semi-automated modes; advanced automation requires integration with SVERKER Viewer and optional script modules compliant with IEC 61850-10 conformance testing frameworks.