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ZX-1200: Precision & Power in Modern Relay Testing
The ZX-1200 Microcomputer Relay Protection Tester represents a significant leap forward in technology for commissioning, maintaining, and verifying protective relays in power systems. Moving decisively beyond the limitations of older, often analog-based testers, the ZX-1200 leverages Digital Signal Processor (DSP) control to deliver unprecedented performance, flexibility, and convenience, setting a new benchmark for field and lab testing.
Core Advantage: DSP-Driven Precision
Unlike conventional testers reliant on older control methods, the ZX-1200's DSP core is the key to its superiority:
Unmatched Speed & Real-Time Processing: Complex test sequences and dynamic signal generation are executed with minimal latency, crucial for testing modern, high-speed digital relays.
Wide Bandwidth & High Fidelity: A fundamental frequency range of 0–1000 Hz and harmonic generation capability up to the 20th order allow accurate simulation of complex power system events like inrush currents, transformer saturation, and sub-synchronous oscillations – scenarios often challenging for older testers.
High-Resolution D/A Conversion: Coupled with a new hi-fi linear power amplifier, this ensures output waveforms of exceptional accuracy, minimal distortion (<0.1% THD typical), and excellent linearity. This translates directly to more reliable and trustworthy test results compared to testers with lower fidelity outputs.
Power and Flexibility: Output Capabilities Redefined
The ZX-1200 offers a versatile and powerful output structure designed to meet the demands of complex protection schemes:
Standard Six-Phase Configuration: Ready to test multi-winding transformers, busbar protection, and full three-phase systems with independent neutral currents without cumbersome reconfiguration.
Impressive Current & Voltage Ranges:
AC Current: 30A/phase (0.1% precision), 60A/phase in 3-phase mode, or a massive 180A via six-phase parallel output (1000VA peak, 10s max).
DC Current: ±10A/phase (0.2% precision).
AC Voltage: 120V/phase (0.1% precision), 240V line-line.
DC Voltage: ±160V/phase (0.2% precision), ±320V line-line.
Independent DC Sources: Dedicated DC outputs simplify testing relay auxiliary supplies, breaker trip coils, and voltage-based elements without tying up the main AC channels – a feature often lacking or limited in older generation testers.
Engineered for the Real World: Robustness and Usability
Beyond raw specs, the ZX-1200 excels in practical application:
Compact, Lightweight & Portable: Utilizing advanced technology and precision components, its specialized structural design makes it significantly smaller and lighter than older, equally capable testers. Technicians can easily carry it to remote substations.
Instant Operation: Ready to work immediately upon startup, maximizing field efficiency compared to testers requiring lengthy warm-up times.
Comprehensive I/O & Timing:
8 Input Channels: Handles free contacts (1-20mA/24V) and potential contacts ("0": 0-6V, "1": 11-250V).
4 Powerful Output Contacts: DC (220V/0.2A) or AC (220V/0.5A) for driving breaker simulators or signaling.
High-Speed Timing: Measurement range 0.1ms – 9999s with < 0.1ms accuracy, essential for testing operating times of high-speed relays and breaker failure schemes.
Perfect Self-Protection: Robust internal safeguards protect the instrument from accidental misconnection or overload, a critical feature for field durability often enhanced beyond older models.
Contrasting Legacy Testers: A Clear Evolution
The ZX-1200 decisively outperforms its predecessors:
Precision: 0.1% AC accuracy vs. the typical 0.2%-0.5% of older units.
Bandwidth & Harmonics: 0-1000Hz + 20 harmonics vs. often limited to 50/60Hz + a few harmonics.
Output Power: 450VA/phase AC current, 1000VA parallel provides ample power for testing low-impedance burdens and high-current applications (e.g., instantaneous overcurrent) where older testers might struggle or require bulky external amplifiers.
Flexibility: Standard 6-phase voltage AND current with independent DC outputs offers unparalleled versatility in a single, compact unit, reducing the need for multiple specialized test sets.
Speed & Fidelity: DSP control ensures cleaner waveforms, faster test execution, and accurate simulation of dynamic phenomena impossible for many analog-based testers.
Portability: Its compact, lightweight design represents a major ergonomic improvement over bulkier legacy equipment with similar output capabilities.
Conclusion：
The ZX-1200 Microcomputer Relay Protection Tester is not merely an incremental upgrade; it's a technological evolution driven by DSP power. Its combination of high precision across wide ranges (AC/DC current/voltage), exceptional waveform fidelity, six-phase flexibility, independent DC sourcing, robust I/O, ultra-fast timing, and true portability makes it an indispensable tool for modern protection technicians. It effectively replaces multiple older devices while offering capabilities they lack, streamlining workflows, enhancing test accuracy, and ultimately contributing to more reliable power system protection. For technicians demanding the highest performance and versatility in relay testing, the ZX-1200 sets the contemporary standard.
GDZX is a manufacturer of power detection equipment, offering a diverse range of products with comprehensive models and providing professional technical support. Contact us at +86-27-6552607 or +86-17396104357.Website: http://en.gdzxdl.com/
