Overview
ASD500 is an advanced device for 3-35kV switchgear. It integrates mimic diagram, HV live display, intelligent climate control (three sensors, three heating, one fan), wireless temperature (standard), power measurement (class 0.5), optional partial discharge monitoring, voice prompts, human body induction, trip/close supervision, dual RS485, Ethernet, 4-20mA outputs, and IRIG-B time sync. Ideal for smart substations and industrial facilities requiring comprehensive monitoring.
Highlight
All-in-One Monitoring
- Dynamic mimic diagram
- HV live display & phase check
- Trip/close supervision & voltage
- Breaker operation counter
- Pre-trip/pre-close flashing (opt.)
Precision Power & PD Measurement
- Class 0.5 power parameters
- Wireless temp (standard)
- Optional partial discharge
- 4-20mA outputs (2 channels)
- Environmental sensors
Smart Environment Control
- Up to 3 temp/humidity sensors
- 3 heating + 1 fan outputs
- Heating circuit fault alarm
- Forced heating mode
- Adjustable thresholds
Advanced Connectivity
- Dual RS485 Modbus
- Ethernet with Modbus-TCP
- IRIG-B time sync
- Power-off alarm
- Industrial reliability (MTBF ≥50,000h)
Function
| Function | Description |
| Mimic Diagram | Dynamic LED display showing breaker, disconnector, earthing switch, spring status. Customizable mapping. |
| HV Live Display | Phase-by-phase LED indication for live voltage; external phase matching via test holes (threshold ≥60V). |
| Electromagnetic Lock | One lock output, controlled by live voltage; unlocks when all phases dead. |
| Power Parameter Measurement | Measures voltage, current, active/reactive power, power factor, energy. Accuracy class 0.5. 3P3L/3P4L selectable. |
| Wireless Temperature Monitoring | Standard support for up to 12 points (ATE200/ATE400 sensors). Range -50～+125℃, ±1℃ accuracy. Over-temperature alarm. |
| Partial Discharge Monitoring (optional) | Connects to APD300-L wired sensor (AE/TEV/UHF). Displays amplitude, frequency, average. Alarm on threshold + count >10. |
| Temperature/Humidity Control | Up to three external sensors (4m cable each). Controls three heating outputs and one fan output. Thresholds adjustable via menu or communication. |
| Heating Circuit Alarm | Detects open circuit or overload of heating loads and reports alarm. |
| Voice Prompts | Intelligent error-prevention voice prompts (three selectable modes). Live voice prompt when HV live and person approaches. |
| Human Body Induction | Automatically turns on backlight and cabinet lighting when operator approaches. |
| Trip/Close Supervision | Monitors continuity of trip and close circuits; indicates 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 | Dual independent RS485 ports, Modbus-RTU protocol, baud rate 2400-19200. |
| Ethernet Communication | One Ethernet port with Modbus-TCP protocol for remote monitoring. |
| 4–20mA Outputs | Two programmable analog outputs for selected parameters. |
| IRIG–B Time Sync | One IRIG-B input for precise time synchronization. |
| 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 | ≤8 VA |
| Power Measurement Accuracy | Class 0.5 (V, I, P, Q, PF, energy) |
| Voltage Input | Rated 100V, consumption ≤0.5VA |
| Current Input | Rated 5A, consumption ≤1VA |
| Frequency | 50Hz |
| Wiring Modes | 3P3L or 3P4L selectable |
| Wireless Temperature | Standard (up to 12 points) |
| – Measuring Range | -50℃ ～ +125℃ |
| – Accuracy | ±1℃ |
| – Sensor Battery Life | ≥5 years (ATE200), ≥10 years (ATE400) |
| – Starting Current | ≥5A (ATE400) |
| Partial Discharge (optional) | APD300-L sensor (AE/TEV/UHF) |
| – AE Range | 0～60 dBμV |
| – TEV Range | 0～60 dBmV, 3MHz～100MHz |
| – UHF Range | -70～+10 dBm, 300MHz～1500MHz |
| – Alarm Logic | Amplitude > threshold and count >10 |
| Temperature/Humidity Sensors | Up to 3, each with 4m cable |
| – Temp Accuracy | ±1℃ |
| – Humidity Accuracy | ±3% RH |
| Trip/Close Voltage Accuracy | Class 1 |
| Digital Inputs | 8 opto-isolated (passive contacts) |
| Relay Outputs | 3 heating, 1 fan, alarm, lock, lighting |
| Analog Outputs | 2 channels, 4-20mA (programmable) |
| Communication | Dual RS485 (Modbus-RTU), Ethernet (Modbus-TCP) |
| IRIG–B Time Sync | 1 input |
| 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 |
| Front Panel Protection | IP40 |
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FAQ
ASD500 comes standard with mimic diagram, HV live display & phase check, one electromagnetic lock, wireless temperature (up to 12 points), power measurement (class 0.5), temp/humidity control (3 sensors, 3 heating, 1 fan), voice prompts, human body induction, trip/close supervision & voltage measurement, dual RS485, Ethernet, two 4-20mA outputs, and IRIG-B time sync. Partial discharge monitoring is optional.
An external APD300-L triple-in-one wired PD sensor (magnetic mount) is required, connected to the second RS485 port of ASD500. ASD500 displays AE, TEV, UHF amplitude, frequency, average, and environmental parameters, with configurable alarms.
Battery-powered ATE200 (life ≥5 years) or CT-powered ATE400 (life ≥10 years, starting current ≥5A) can be used.
RS485 ports use Modbus-RTU, Ethernet port uses Modbus-TCP. The two RS485 ports can be configured independently.
Up to three sensors (WH3 configuration), each with 4m cable. They control three heating outputs and one fan output.
ASD500 adds a third temp/humidity control channel, dual RS485, Ethernet, two 4-20mA outputs, IRIG-B time sync, and optional PD monitoring, offering more comprehensive functionality for demanding smart substation and industrial distribution applications.
Summary
ASD500 unifies electrical measurement, temperature monitoring, partial discharge detection, and advanced connectivity in one device. Class 0.5 power metering, wireless temperature, and optional PD provide complete asset insight. Dual RS485, Ethernet, and IRIG-B enable seamless integration. It maximizes uptime, enhances safety, and enables predictive maintenance.
