MODEL: ET4400
SANFIX ET-4400 Large Substation Grounding Grid Impedance Tester
SANFIX Precision Instrument
Technical Download Center
Category: Earth Ground Testers
SANFIX ET-4400 Large Substation Grounding Grid Impedance Tester
High-current (up to 10A variable frequency) grounding grid impedance tester measuring step voltage, touch voltage, and grid impedance in 500kV substations.
| Parameter / Feature | Technical Value / Range |
|---|---|
| Test Current | 1.0A to 10.0A Variable Dual-Frequency (45Hz/55Hz) |
| Grid Impedance | 0.001Ω to 50.000Ω |
| Safety Tests | Step Voltage (Vstep) & Touch Voltage (Vtouch) |
| Interference Filter | Canceled 50Hz/60Hz power frequency grid interference |
| Output Power | 1000W Heavy-Duty Generator Inverter |
| Enclosure | Ruggedized Pelicase Mobile Trolley with Wheels |
Official Calibration Option Available: This model can be delivered pre-calibrated with an ISO/IEC 17025 accredited certificate from PT. SANFIX Calibration Lab.
ET4400
SANFIX ET-4400 Large Substation Grounding Grid Impedance Tester