Overview
The ACPD series coupling device is designed to work with the AIM-T500 insulation monitoring device, extending its voltage monitoring capability to higher voltage unearthed IT systems (single-phase AC up to 1150V, three-phase AC up to 1650V, and DC up to 1760V). It provides high internal impedance to minimize impact on the monitored system and ensures reliable operation in harsh industrial environments. The ACPD series is available in two models: ACPD100 for single-phase AC/DC systems and ACPD200 for three-phase AC/DC systems.
Highlight
Voltage Extension
- Up to 1760V DC
- Up to 1650V AC
- Single/three-phase
- DC system support
High Impedance
- ≥160kΩ (ACPD100)
- ≥225kΩ (ACPD200)
- Minimal system impact
- System protection
Wide Temperature
- -20°C to +60°C work
- -20°C to +70°C store
- 5%-95% humidity
- ≤2500m altitude
Simple Wiring
- L1/L2/L3 to system
- AK to AIM-T500
- No reconnection
- Reliable terminals
Function
| Voltage Range Extension | Enables AIM-T500 to monitor insulation resistance in IT systems with voltage up to 1150V AC (single-phase), 1650V AC (three-phase), or 1760V DC. |
| High Internal Impedance | Internal DC resistance ≥160kΩ (ACPD100) or ≥225kΩ (ACPD200) ensures negligible influence on the monitored system. |
| Wide Environmental Adaptability | Operating temperature -20°C to +60°C, storage -20°C to +70°C, humidity 5%–95% non-condensing, altitude ≤2500m. |
| Simple Integration with AIM-T500 | Direct connection via AK terminal; no need to reconnect the monitor to the system. |
Specification
| Parameter | ACPD100 | ACPD200 |
| Monitored IT System Type | Single-phase AC / DC unearthed | Three-phase AC / DC unearthed |
| System Voltage | Single-phase AC 0-1150V, DC 0-1760V | Three-phase AC 0-1650V, DC 0-1760V |
| Internal DC Resistance | ≥160kΩ | AK1 ≥225kΩ |
| Operating Temperature | -20°C to +60°C | |
| Storage Temperature | -20°C to +70°C | |
| Relative Humidity | 5% – 95% (non-condensing) | |
| Altitude | ≤2500m |
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FAQ
No, it must be used together with AIM-T500 insulation monitor. It is an accessory to extend the voltage range.
Connect L1 to the positive pole and L2 to the negative pole of the DC system. Then connect AK to AIM-T500.
Yes, but only two phases (L1, L2) need to be connected. However, ACPD100 is more cost-effective for single-phase.
Up to 1760V DC, as specified.
Yes, ≥160kΩ or ≥225kΩ ensures minimal impact on the monitored IT system.
Summary
The ACPD series coupling device is the essential companion to AIM-T500 for high-voltage IT systems. It extends the monitoring voltage up to 1760V DC or 1650V AC while maintaining high internal impedance for system integrity. With two models covering single-phase and three-phase systems, wide environmental tolerance, and simple wiring, it provides a reliable and cost-effective solution for insulation monitoring in demanding industrial applications.
