English Product Name
| Origin | Sweden |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | Sverker 650 |
| Pricing | Available Upon Request |
| AC Current Output | 0–10 A (75 V full-load), 0–40 A (20 V full-load), 0–100 A (8 V full-load), 0–250 A (10 V, 1 s pulse) |
| AC Voltage Output | 0–250 V AC (3 A, 250 V full-load), 0–300 V AC (2 A, 250 V full-load) |
| Auxiliary AC/DC Voltage Outputs | 0–60 V AC / 60–120 V AC / 20–130 V DC / 130–220 V DC (all up to 0.4 A) |
| Timer Range | 0.000–999.9 s, resolution 1 ms |
| Current Measurement | Internal 0.00–200.0 A (±0.5%), External 0.000–6.000 A (±0.5%) |
| Voltage Measurement | 0.00–600.0 V (±0.5% AC/DC) |
| Phase Angle Range | 0–359° (±1°) |
| Dimensions | 350 × 270 × 220 mm |
| Weight | 18 kg |
Overview
The Megger Sverker 650 is a high-performance, single-phase relay test set engineered for comprehensive functional verification and commissioning of electromechanical, static, and digital protective relays in low- and medium-voltage power systems. Designed around a robust, integrated architecture, it combines precision current and voltage sources with calibrated measurement circuits—eliminating the need for external meters or auxiliary instrumentation. Its core functionality is grounded in controlled energy injection: applying programmable AC/DC current and voltage waveforms to simulate fault conditions—including overcurrent, undervoltage, overvoltage, and directional elements—while simultaneously measuring relay response time, pickup/dropout thresholds, and contact status. The unit complies with IEC 61850-10 conformance testing requirements for protection IEDs and supports traceable calibration per ISO/IEC 17025 when used with accredited reference standards.
Key Features
- Integrated high-current capability: delivers up to 250 A (1 s pulse) and sustained 100 A at 8 V, enabling realistic simulation of short-circuit currents for instantaneous and time-overcurrent element testing.
- Dual-range AC voltage outputs: 0–250 V AC (3 A) and 0–300 V AC (2 A), supporting VT secondary testing, loss-of-excitation checks, and synchro-check relay validation.
- Flexible auxiliary supplies: independently regulated AC (0–120 V) and DC (20–220 V) outputs for powering auxiliary coils, trip circuits, and auxiliary relays during sequence-of-operation tests.
- High-resolution timing: LED-display timer with 1 ms resolution and ±1 ms accuracy over 0.000–999.9 s range—critical for verifying inverse-time curves (e.g., IEEE C37.112, IEC 60255-151) and auto-reclosing intervals.
- Built-in multifunction metering: simultaneous measurement of RMS current (internal/external), RMS voltage (0–600 V), phase angle (0–359°), and derived quantities including impedance (Z), resistance (R), reactance (X), active (P), reactive (Q), apparent (S) power, and power factor (cos φ).
- Onboard test memory: stores up to 10 preconfigured test setups—including automatic test sequences for overcurrent, voltage-dependent, and directional relays—reducing setup time and operator error.
- Hold function: freezes real-time readings for manual documentation or comparison against relay nameplate settings without interrupting output.
Sample Compatibility & Compliance
The Sverker 650 is compatible with all standard single-phase protective relays used in distribution networks, generator protection schemes, and industrial switchgear—including induction-disk overcurrent relays (e.g., GE Multilin 250, Siemens 7SJ6x), static voltage relays (e.g., ABB REF615), and modern IEC 61850-compliant devices. It meets EN 61000-4-2 (ESD immunity), EN 61000-4-3 (radiated RF immunity), and EN 61000-4-4 (electrical fast transient) requirements for industrial environments. Its measurement accuracy conforms to IEC 61000-4-30 Class S for harmonic and flicker assessment where applicable. Calibration certificates are issued with NIST-traceable references upon request, supporting GLP/GMP and utility QA/QC programs.
Software & Data Management
The Sverker 650 supports bidirectional RS232 and USB communication with Megger’s RelayTest software (Windows-based), enabling remote control, automated test scripting, result logging, and report generation in PDF or CSV format. All test records include timestamps, operator ID, instrument serial number, and environmental metadata—ensuring auditability under FDA 21 CFR Part 11 and ISO 17025 requirements. Software-defined test templates align with common utility test procedures (e.g., EPRI TR-102357, IEEE C37.118.2), and raw data export permits third-party analysis in MATLAB or Excel. Firmware updates are delivered via secure download portal with version-controlled release notes.
Applications
- Commissioning and periodic maintenance of feeder protection relays in 11 kV–33 kV distribution substations.
- Functional testing of generator backup protection (51G, 27/59G) and motor protection relays (46, 49RTD).
- Verification of auto-reclosing logic timing, lockout sequences, and synchronism check (25) relay behavior.
- Calibration support for field technicians performing on-site relay calibration per ANSI/IEEE C37.90 and IEC 60255-6.
- Educational use in power engineering labs for hands-on relay coordination studies and fault simulation exercises.
FAQ
What relay types can the Sverker 650 test?
It supports all single-phase electromechanical, solid-state, and microprocessor-based relays—including overcurrent (50/51), voltage (27/59), frequency (81), directional (67), and reclosing (79) functions.
Does it support three-phase testing?
No—the Sverker 650 is strictly a single-phase test set. For three-phase applications, Megger recommends the Sverker 900 series or Omicron CMC 356.
Is external current shunt required for high-current measurements?
No—its internal current measurement circuit handles up to 200 A directly; external clamp-on sensors (e.g., 6 A range) are optional for higher-precision low-current work.
Can test results be exported for regulatory reporting?
Yes—RelayTest software generates timestamped, tamper-evident reports compliant with utility asset management systems and ISO 55001 documentation requirements.
What is the recommended calibration interval?
Megger specifies annual calibration; however, end users may extend this to 24 months if supported by in-house verification against traceable standards per ISO/IEC 17025 clause 7.7.
