Overview
ASD200 is a multifunctional device for 3-35kV switchgear. It features dynamic mimic diagram, HV live display with phase check, intelligent temp/humidity control (two heating, one fan), voice prompts, human body induction, trip/close supervision and voltage measurement, breaker counter, and RS485 Modbus. Ideal for substations and industrial distribution.
Highlight
Comprehensive Status Indication
- Dynamic LED mimic diagram
- Breaker, disconnector, earthing status
- Spring charge indication
- Customizable input mapping
HV Live & Phase Check
- 3-phase live LED indication
- Built-in self-test button
- External phase matching support
- 1 electromagnetic lock output
Smart Temp./Humidity Control
- 1 external sensor (4m cable)
- 2 heating + 1 fan outputs
- Forced heating mode
- Heating circuit fault alarm
Enhanced Safety & Monitoring
- Voice error-prevention prompts
- Human body induction (auto backlight)
- Trip/close circuit supervision
- RS485 Modbus communication
Function
| Function | Description |
| Mimic Diagram | Dynamic LED display showing breaker, disconnector (trolley), earthing switch, and spring status. |
| HV Live Display | Phase-by-phase LED indication for live voltage; supports external phase matching via test holes. |
| Electromagnetic Lock | One lock output, controlled by live voltage; unlocks when all phases dead. |
| Temperature/Humidity Ctrl | One external sensor (4m cable); controls two heating outputs and one fan output based on user-set thresholds (adjustable via front panel or communication). |
| Heating Circuit Alarm | Detects open circuit or overload of heating loads and reports alarm. |
| Voice Error–Prevention | Voice prompts when unsafe operation is attempted (e.g., moving trolley with breaker closed). Two selectable modes. |
| Human Body Induction | Automatically turns on backlight and cabinet lighting when operator approaches. |
| Trip/Close Supervision | Monitors continuity of trip and close circuits; indicates circuit health via LEDs. |
| Trip/Close Voltage Meas. | Measures control voltage on trip and close circuits (accuracy class 1). |
| Breaker Operation Counter | Records number of breaker operations; can be reset via menu. |
| RS485 Communication | Modbus-RTU protocol, baud rate 2400-19200, for remote monitoring and parameter setting. |
| Power–off Alarm | Relay output closes upon auxiliary power loss. |
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Specification
| Parameter | Value |
| Auxiliary Power | AC 85～265V or DC 100～300V |
| Power Consumption | ≤6 VA |
| Communication | RS485, Modbus-RTU, 2400-19200 bps |
| Temperature Measurement | ±1℃ |
| Humidity Measurement | ±3% RH |
| Trip/Close Voltage Acc. | Class 1 |
| Digital Inputs | 8 opto-isolated (passive contacts) |
| Relay Outputs | Heating I, Heating II, Fan, Alarm, Lock, Lighting (depending on model) |
| Operating Temperature | -10℃ ～ +55℃ |
| Relative Humidity | ≤95% (no condensation) |
| MTBF | ≥50,000 hours |
| Dimensions (W×H×D) | 238 mm × 178 mm × 83 mm |
| Panel Cut–out | 220 mm × 165 mm |
| Mounting | Panel flush mounting |
| Weight | Approx. 1.2 kg |
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FAQ
Yes, one sensor is included with a 4-meter cable. For longer cables, please specify when ordering.
You can set them via the front panel keys (see manual section 2.4) or via RS485 communication.
Two modes: Mode 1 (prompts both breaker and earthing switch), Mode 2 (only breaker). Switch via the system setup menu.
No. For wireless temperature monitoring, please consider ASD300 or ASD320.
The range is 0～6553.5V (primary side value), accuracy class 1. It measures the secondary control voltage and displays the primary value after transformation.
Summary
ASD200 enhances safety with voice error-prevention, auto-lighting, and trip/close monitoring. Its climate control prevents condensation, while RS485 enables remote integration. Rugged design (MTBF ≥50,000h) ensures long life. It reduces misoperations and protects insulation, ideal for modern switchgear.
