EN
- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
The GDCT-9500C is a portable, wireless high-precision CT ratio & error analyzer designed for online, no-power-off, no-disassembly testing of ≤60kV (35kV typical) current transformers (CTs) and transformers in distribution systems. It synchronously measures HV primary current, LV secondary current, ratio, ratio error, phase angle error, polarity, phase sequence, and leakage current.
Featuring DSP+ARM dual-core processing, 3-channel LV clamp synchronous acquisition, and long-range wireless transmission (up to 100m, wall-penetrating), it delivers accurate, stable data without system shutdown. The 3.2” TFT color LCD displays real-time vectors, waveforms, and test results. With 2000-group data storage, USB export, and PC analysis software, it’s ideal for substations, power bureaus, industrial plants, and anti-theft-of-electricity inspections.
Specifications
| Parameter | Specification |
| System Voltage | ≤60kV (35kV/10kV typical) |
| HV Primary Current | 0–500A；±1.0% (0–50A), ±2.0% (50–500A) |
| LV Secondary Current | 0–5A；±0.5% |
| Ratio Range | 1–1000；Ratio error ±1.0% |
| Phase Angle Error | ±1° |
| Wireless Distance | 100m (lineofsight), wallpenetrating |
| Display | 3.2” TFT color LCD |
| Data Storage | 2000 groups；USB export |
| Power Supply | Liion batteries；8hrs continuous |
| Dimensions | 345×290×105mm (integrated case) |
| Weight | ~3.5kg (full set) |
| Operating Temp | 10°C ~ +50°C |
| Compliance | DL/T 668, IEC 60044, CE |
Applications
Core Test Objects
· HV CTs: 10kV/35kV/60kV metering & protection CTs
· Distribution transformers: Primary/secondary ratio & polarity
· LV metering circuits: 3-phase balance, leakage, antitheft checks
· Substation DC systems: CT bank consistency verification
Typical Usage Scenarios
· CT acceptance & periodic verification: Ensure metering accuracy
· Live troubleshooting: Identify ratio/phase errors without shutdown
· Anti-theft-of-electricity: Detect abnormal CT connections or bypasses
· Maintenance: Verify CT health before replacement
· Data logging: Long-term trend analysis (optional GPS)
Advantages
Zero Downtime Testing
Online live-circuit measurement → no production interruption
3-Channel Sync, One-Shot 3-Phase Test
3 LV clamps + 1 HV clamp → complete 3-phase CT test in minutes
100m Wireless, Safe & Flexible
Wall-penetrating wireless → safe operation at distance, no heavy cables
Lab-Grade Accuracy On-Site
±0.5% LV / ±1–2% HV → reliable metering-grade data
All-In-One CT Test Solution
Ratio / error / phase / polarity / leakage → one unit replaces multiple testers
FAQ
Q: Can it test CTs while the substation is live?
A: Yes. It supports online, energized testing without de-energizing the system.
Q: What’s the maximum distance between HV clamp and host?
A: 100m line-of-sight, can penetrate walls (actual range depends on site conditions).
Q: Does it test 3-phase CTs at once?
A: Yes. 3 LV clamps measure all three secondary currents synchronously.
Q: Is training required to operate it?
A: Minimal. The 3.2” TFT has intuitive menus; one-key test for basic measurements.
Q: What’s included in the standard package?
A: Main unit, HV wireless clamp, 3×LV clamps, 5section insulated rod, Li-ion batteries & chargers, USB drive, PC software, manual, hard carry case.
