Service Ground Test Set (900)
TESCO’s Service Ground Test Set (Catalog No. 900) is engineered to confirm the condition of a service ground connection with clarity and precision. Designed around a suppressed-zero voltmeter and internal shunt, this compact instrument identifies resistance in the ground path by displaying any resulting voltage drop. It also doubles as a diagnostic tool for potential transformers, placing a measurable burden on the secondary to detect performance issues. Whether verifying a meter installation or investigating transformer functionality, the 900 offers dependable accuracy in the field.
Description
Features
- Verifies Ground Integrity: Quickly identifies resistance in secondary service ground connections.
- Suppressed Zero Voltmeter: Dual-range scale (65-130V and 130-260V) magnifies voltage drop effects for easy detection.
- Color-Coded Readings: Red, Yellow, and Green sectors help technicians visually assess ground quality at a glance:
- Red: 65-86V (≥24 ohms resistance)
- Yellow: 86-106V (~8–24 ohms resistance)
- Green: 106-130V (≤8 ohms resistance)
- Multi-Use Functionality: Also checks potential transformers in transformer-rated metering installations.
- Compact & Lightweight: Measures just 6.5″ x 4.125″ x 2.625″ and weighs only 1.375 lbs.
- Built-In 60 Ohm Shunt: Delivers 2A load when testing ground resistance.
Product Documents
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Disclaimer:
TESCO Metering reserves the right to modify product designs, specifications, features, and documentation at any time as part of our continuous improvement process. All information is provided “as is” and may change without prior notice. While TESCO® strives for accuracy, completeness, and technical reliability, customers should verify the latest product details before making purchasing or engineering decisions. For confirmation of current specifications or application suitability, please contact TESCO® directly.