Fully Automatic SF6 Density Relay Calibrator

Product Introduction

The WEMD-W2000F is a fully automatic intelligent calibration instrument focusing on the operation and maintenance of SF6 switchgear. It is specially optimized for problems such as slow response, poor contact and temperature compensation failure of density relays in on-site operation. Strictly following the DL/T596-1996 Preventive Test Regulations for Power Equipment, it achieves high-precision calibration without a constant temperature room and complex operations, and is the core guarantee equipment for the safe operation of SF6 equipment in power supply and distribution departments.

Product Parameter (specification)

Power Supply Configuration: AC220V 50Hz commercial power, DC12.6V 4000mAh lithium battery, charging time < 4 hours, continuous working time 8 hours
Instrument Accuracy: Class 0.1, pressure resolution 0.001MPa, temperature resolution 0.1℃
Pressure Range: Calibration range 0~1MPa, ambient temperature range -20℃~80℃
Interaction Method: 320×240 graphic dot matrix monochrome LCD screen, single-button flywheel knob operation
Data Storage: Power-off protection, can store 50 sets of test results, supporting query and printing at any time
Physical Specifications: Main unit 365×300×222mm, overall weight 8kg, portable case integrated design
Function Adaptation: Supports calibration of single alarm, single lockout, single alarm + single lockout, single alarm + dual lockout types

Product feature and application

Core Chip Empowerment: 32-bit microprocessor + TI high-speed signal processing chip, high integration, good repeatability and strong stability
Intelligent Temperature and Pressure Conversion: Automatically completes the conversion between ambient pressure and equivalent pressure at 20℃, dynamic temperature and pressure compensation, solving the problem of on-site calibration
Efficient and Energy-saving Air Circuit: Extremely low gas consumption during calibration, no SF6 gas waste, zero pollution and low cost
On-site Non-destructive Calibration: Standard configuration of multiple models of adapters, suitable for most switch types, on-site calibration without disassembly
Automatic Report Generation: High-speed micro printer, Chinese character report output, with intelligent analysis of test results
Flexible On-line Debugging: Supports on-line adjustment of system clock and pressure, meeting the needs of on-site precise correction
Imported Core Components: Key components adopt imported accessories, ensuring high reliability in long-term operation

Prodection details

Operation and Maintenance of SF6 Switches in Power Systems: Periodic calibration of on-site density relays to eliminate false tripping and response failure
Production of High-voltage Electrical Equipment: Full-performance testing of density relays and pressure gauges before factory delivery by manufacturers
Equipment Maintenance in Industrial and Mining Enterprises: Regular calibration, fault diagnosis and performance recovery of SF6 electrical equipment
Third-party Metrology and Testing: Professional institutions issue authoritative calibration reports to ensure compliant operation of equipment
Calibration Without Constant Temperature Environment: Breaking the limitation of the venue, completing high-precision calibration in any temperature environment

Company Qualifications

FAQ

1)What are the fundamental principles of calibrating SF6 density relays?

Temperature affects the gas pressure within a sealed container. The standard reference is usually the relative pressure value of SF6 at 20°C. To evaluate the performance of density relays, all SF6 pressure measurements obtained at a certain ambient temperature must be translated to their equivalent pressure values at 20°C during on-site calibration.

2)What are the functions of an SF6 density relay?

(1) SF6 Density Relay Calibration Single signal, single lockout, dual lockout, lockout reset value calibration, alarm reset value calibration, alarm value calibration, and lockout value calibration
(2) Ambient Temperature Pressure Gauge Calibration

(3) 20°C Pressure Gauge Calibration

3)What are the precautions for the fully automatic SF6 density relay calibrator?

1. To avoid damaging the calibrator when calibrating SF6 gas density relays on-site, unplug the power source that is attached to the density relay.
2. Bring the toolbox before you go to the location. Bring all the transition connections and equipment needed for switching activities, and first verify the nitrogen gas reserve in the little cylinder within the toolbox.
3. To avoid secondary circuits creating loops with these signal wires that might interfere with testing, disconnect the respective alarm signal wires and interlock signal wires from the terminal block.
4. To guarantee precise calibration results, the density relay under calibration must be positioned upright rather than flat.
5. Steer clear of significant vibration while the density relay is being calibrated.
6. When utilizing gas cylinders, adhere to these rules.

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