Manual Tan Delta Bridge
LQMTD2876 Manual Tan Delta Bridge: Dielectric Loss & Capacitance Measurement
Industrial-grade testing system for liquid/solid insulation, cables, transformers, and rotating machines with 0.00001 tan δ resolution and 15A direct charging current capability.
Compliance Standards
ISO/IEC 17025: Laboratory competence
IEC 60247: Insulating liquid dielectric properties
EN 61010-1: Electrical safety
EMC Directive 2014/30/EU: Electromagnetic compatibility
ASTM D924: Dissipation factor in insulating oils
Key Applications
Power transformer insulation diagnostics
Cable tan δ monitoring
Bushing & capacitor quality control
Generator/motor winding assessment
Shunt reactor power loss measurement
Measured Parameters
| Parameter | Symbol | Range |
|---|---|---|
| Capacitance | CX | 0.1–1099.99×CN |
| Dissipation Factor | tan δ | 0.00000–9.99 |
| Power Factor | cos φ | 0–1 |
| Inductance | LX | User-defined ranges |
| Test Current | IX | Up to 3000A (with comparator) |
Technical Specifications
1. Electrical Parameters
Test Voltage: 50V–1.6MV (1% accuracy)
Frequency: 45–65Hz ±0.2%
Standard Capacitor: 10pF–10nF (15mA max)
2. Measurement Accuracy
| Function | Resolution | Accuracy |
|---|---|---|
| Capacitance | 5 digits | ±0.01% |
| tan δ | 1×10-5 | ±0.5% rdg + 0.005% |
| Power Loss | 0.1W | ±1% + 2 LSD |
3. Safety Features
Built-in insulation failure protection
Stray field immunity
Self-test circuit for diagnostics
Operational Benefits
Frequency-independent bridge balancing
Direct 15A charging current input
Print-ready measurement reports
Customizable test programs
Typical configurations: Includes industrial PC (Intel 1.5GHz+, 2GB RAM) for data logging and analysis.
