Product Description

Key Features (Point-by-Point Discussion)

1. Product Type & Core 定位

• Model: STE38-CT
• Product Category: STS Prepaid Three-Phase Keypad-Type CT Meter (Three-Phase Four-Wire System)
• Core Function: Specialized for balanced load applications; measures three-phase voltage, current, active/reactive power, and four-quadrant energy to support comprehensive energy monitoring.

2. Compliance & Quality Assurance

• International Standards Compliance: Meets IEC62052-11 and IEC62055-41 standards; certified by STS ASSOCIATION for multi-phase prepaid management.
• Manufacturing Standards: Produced in accordance with ISO9001 (quality management) and ISO14001 (environmental management) standards, ensuring product reliability and stability.
• Protection Class: Class II (electromagnetic compatibility), safeguarding against electrical interference.

3. Core Functional Advantages

• STS Token Recharge: Supports recharge via 20-digit token, with flexible top-up methods (on-site, mobile, door-to-door).
• Comprehensive Measurement: Includes neutral current measurement and bidirectional metering, adapting to diverse power usage scenarios.
• Intelligent Alarming & Protection: Features credit alarming (low credit reminder), tamper detection, and cover opening detection to prevent theft and ensure data security.
• Time & Tariff Management: Equipped with a real-time clock and supports up to 8 time-of-use (TOU) multi tariffs for flexible energy pricing.
• Remote & Automated Control: Optional RF communication module enables remote reading, data collection, and remote on/off control; automatic switch-off when credit is exhausted.
• Data Traceability: Built-in event log to record operational events, facilitating troubleshooting and data auditing.
• Low-Voltage Adaptability: Operates stably under low-voltage conditions, enhancing applicability in complex power environments.

4. Technical Parameters (Key Specifications)

• Electrical Performance:
  • Nominal Voltage: 3×230V
  • Working Voltage Range: 70%~120%Un
  • Nominal Frequency: 50-60Hz
  • Current Ratings: Basic Current (Ib)=10A; Maximum Current (Imax)=100A; Starting Current (Ist)=30mA
  • Active Energy Constant: 400 imp/kWh
  • Measurement Accuracy: Class 1.0
• Power Consumption: Voltage circuit <2W <8VA; Current circuit <1VA
• Environmental Adaptability:
  • Operation Temperature Range: -25℃~70℃
  • Storage Temperature Range: -40℃~85℃
• Electromagnetic Compatibility (EMC):
  • AC Insulation Strength: 4kV at 50Hz for 1min
  • Impulse Voltage (1.2/50μs): 8kV (mains connections)
  • Electrostatic Discharges: 8kV (contact discharge), 16kV (air discharge)
  • Electromagnetic RF Field: 10V/m (27MHz-500MHz), 30V/m (100KHz-1GHz)
  • Fast Transient Burst Test: 4kV

5. Product Design & Durability

• Long Service Life: 8-year battery life ensures continuous operation without frequent replacement.
• Protective Performance: IP54 protection rating (dustproof and water-splash resistant) for indoor/outdoor installation.
• Safety & Durability: Thickened flame-retardant shell material, ensuring stability, durability, and fire safety.
• User-Friendly Design:
  • LCD display for clear visibility of energy consumption, credit, and operational status.
  • Transparent protective cover and keypad operation for easy token input and function control.
  • Infrared communication support for local data transmission.
  • Easy Installation: Fixed triangular positions and hanging hole design on the back simplify mounting.

6. Application Scenarios

• Commercial: Large supermarkets, convenience stores, clothing stores, office buildings, commercial complexes.
• Industrial: Factories, industrial parks, large-scale public facilities.
• Residential & Rental: Households, apartments, rental properties (for high-load usage).

7. Vending & Recharge System

System Functions

• Data Management: Covers meters, prices, customers, regions, sales stations, and accounts; supports creation, editing, deletion, querying, and Excel import/export.
• Recharge Service: Two recharge methods (by amount/unit); generates token receipts after successful top-up.
• Report Generation: Produces receipt reports, monthly summaries, customer payment reports, and regional reports for operational analysis.
• Account Management: Allows password modification, sub-account creation, and permission assignment.
• API Support: Facilitates function expansion to meet personalized business needs.
• Compatibility: Adapts to electric meters, water meters, and gas meters.

Recharge Processes

• On-Site Recharge: Users recharge at nearby points via the STRON Vending System.
• Mobile Recharge: Through third-party platforms (M-PESA, Alipay, MTN, Airtel, etc.) via API integration, with tokens sent via SMS.
• Door-to-Door Recharge: Staff use mobile vending units to provide on-site recharge services at meter locations.