Overview
The General Electric 103131LSSV AC ammeter is a high-accuracy switchboard instrument designed for precise measurement of AC current in industrial and utility applications. This transformer-rated ammeter features a full-scale range of 0–1200 amperes with an RTG (rating) of 0–5A, making it suitable for monitoring high current circuits via current transformer (CT) coupling. Compliant with ANSI C39.1 accuracy class 1, the GE AB40-series meter delivers reliable performance in demanding environments.
Key Features
- Transformer-Rated Design: Engineered to operate with current transformers, allowing safe monitoring of high amperage circuits.
- ANSI C39.1 Accuracy Class 1: ±1.0% basic accuracy across the full scale, meeting stringent industrial standards.
- Robust Construction: 4.5-inch case size with durable switchboard-grade materials for long service life in harsh environments.
- Zero-Left Scale: Clear, easy-to-read face for operator visibility and quick current assessment.
- 40/70 Hz Operation: Compatible with industrial 50/60 Hz power systems.
Technical Specifications
- Model Number: General Electric 103131LSSV
- Instrument Type: GE AB40 AC Ammeter
- Full-Scale Range: 0–1200 Amperes (AC)
- Rating (RTG): 0–5A (transformer-rated)
- Accuracy Class: ANSI C39.1, Class 1 (±1.0% full scale)
- Scale Type: Zero-Left
- Frequency: 40–70 Hz
- Case Size: 4.5 inches
- Dimensions: 4.5" × 4.5" × 4.5"
- Weight: Approximately 2 lbs
- Dielectric Strength: 2300 VAC for 1 minute (circuit to mounting studs)
- Overload Rating: 1.2× continuous; 10× for 0.5 seconds (repeated 10 times with 1-minute interval)
- Origin: Made in USA
Typical Applications
- Industrial motor control and switchboard installations
- Utility and distribution feeder monitoring
- Power plant instrumentation
- Legacy electrical panels requiring ANSI C39.1 compliance
- High-current circuit monitoring via current transformer networks
Compatibility & Replacements
Compatible With
- Current transformer (CT) systems with appropriate ratios (e.g., 120:1, 400:1)
- Industrial AC power systems (40–70 Hz)
- Standard switchboard panel cutouts (4.5-inch configuration)
- ANSI C39.1 compliant installations
Replaces / Drop-In Replacement For
- GE 103131LSSN (0–800A variant)
- GE 103131LSUE2 (alternative 0–5A RTG configuration)
- Other GE AB40-series ammeters with matching case and mounting
Works With
- Current transformers (CTs) with specified ratios and accuracy classes
- Legacy electrical control systems and power distribution equipment
- ANSI-compliant panel instruments and metering networks
- Industrial AC circuits operating at 40–70 Hz frequency
