Power Metering Products
LQ-901 Integrated Transformer Calibration Instrument
The LQ-901 Field Calibration Instrument revolutionizes substation testing with its all-in-one CT/PT verification capability. Combining 0.02% reference-grade accuracy with rugged portability, it eliminates the need for multiple standard transformers and load boxes during field calibrations.
Product Parameter
(1)
CT ratio range | 5A/5A~25000A/5A (5A/1A~5000A/1A) turn ratio error ± 0.2% |
Error measurement range | 5A/5A~5000A/5A(5A/1A~5000A/1A) |
Accuracy range of the tested current transformer | 1.0, 0.5, 0.5S, 0.2, and 0.2S |
CT error accuracy | 0.02 level |
(2)
PT ratio range | Full range measurement (electromagnetic type) ± 0.2% |
Error measurement range | Primary voltage:3-220kV/(non-standard primary voltage is also acceptable) Secondary voltage: 3kV/100V、3kV//100V/;6kV/100V、6kV//100V/;6.3kV/100V、 6.3kV//100v/;10kV/100V、10kV//100V/;10.5kV/100V、10.5kV//100V/;13.8kV/100V、13.8kV//100V/;15kV/100V、15kV//100v/;15.75kV/100V 、15.75kV//100V/;18kV/100V、18kV//100V/ ;20kV/100v、 20kV//100v/;35kV/100V、35kV//100V/;66kV//100v/; 110kV//100V/;220kV//100V/ |
Power factor | 0.0-1.0 |
PT error accuracy | 0.05 level |
DC resistance | 0.0-0.1 Ω ± 3% |
0.1-50Ω ±1% | |
Environmental temperature | 0-40℃ |
Power consumption of the whole machine | 30W (static) and 150W (working) |
Environmental temperature | 0-40℃ |
Environmental humidity | <85% at 25℃ |
Whole machine weight | 6.0Kg |
Whole machine volume | 472mm × 355mm × 168mm |
Key Features
1. Advanced Measurement Capabilities
Wide ratio testing: 1%-200% for CTs (including S-class)
Dual-mode operation:
Standard point verification (20%-120%)
Any-point testing (1%-200%)
Multi-parameter analysis: Ratio error, phase angle, polarity, burden
2. Industrial Design
Rugged construction: IP52 rated for substation use
Ultra-portable: 5.8kg (472×355×168mm)
Safety certified: CAT IV 600V, IEC 61010
Technical Specifications
CT Testing:
Ratio: 1%-200%
Accuracy: ±0.02% (ratio), ±0.5' (phase)
PT Testing:
Ratio: 10%-150%
Accuracy: ±0.03% (ratio), ±1' (phase)
Data Storage: 500 tests with timestamps
Compliance & Certifications
ISO 9001:2015 Quality Management
GB/T 19001-2016 (QMS)
IEC 61869-1/2 for instrument transformers
CMC China Metrology Certification
Why Choose LQ-901?
Time Savings: 70% faster than traditional methods
Cost Effective: Replaces $50k+ of reference equipment
Future-Proof: Software-upgradable for new standards
Includes 3-year calibration warranty and on-site training package.