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AIM-D500-CA DC Din Rail Insulation Monitoring Device IMD with IEC61557-8

IEC61557-8

Insulation Resistance Monitoring of DC Charging Station

Rated Voltage: 50V~1000V

Accordance with the CHAdeMO 3.0 & Combined Charging System (CCS)

Undervoltage and Overvoltage Detection

Stop Mode for Disabling the Measuring Pulse Generator

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Describe

Acrel AIM-D500-CA DC insulation monitor is a cutting-edge device designed for 0-1000V DC systems, ensuring power supply safety by continuously monitoring insulation resistance in IT systems.

It meets the requirements of IEC 61557-8 and is compatible with the Combined Charging System (CCS) and CHAdeMO 3.0 standard.

It can monitor the insulation resistance of DC charging stations with a nominal system voltage range from 50V up to 1000V.

The device features a four-module enclosure and DIN-rail mounting, making it easy to install and integrate into existing systems.

It also has the capability to measure system voltage and detect undervoltage and overvoltage conditions.

Its stop mode allows users to disable the measuring pulse generator via the Modbus protocol, through the device menu, or by using an external button.

The AIM-D500-CA is an ideal solution for applications such as power plants, substations, EV chargers, UPS systems, and solar systems.

Specifications

Item		Parameter
Supply voltage	Supply voltage Us	AC/DC 85~265V
	Frequency	50/60Hz
	Power consumption	≤ 5 W
IT system being monitored	Nominal system voltage with ACPD300, Un	DC 50…1000V
IT system being monitored	Nominal system voltage without ACPD300, Un	DC 50…400V
Response values	Response value (Insulation prewarning)	Insulation alarm limit value…2MΩ
	Response value (Insulation alarm)	1kΩ…2MΩ
	Relative uncertainty	±15%,±2kΩ
	Undervoltage detection	(80%~100%) Un(off)*
	Overvoltage detection	(100%~120%) Un(off)*
	accuracy	1%,±1V
CCS and CHAdeMO 3.0 mode	Permissible system leakage capacitance	≤20μF
	Measuring and display range of insulation resistance	1kΩ…2MΩ
	Measurement uncertainty / Relative uncertainty	Ce≤5μF: ±15%,±2 kΩ

		Ce>5μF and RF>100 kΩ: ±15%
	Response time	≤10s
Interface		RS485/Modbus-RTU
Relay output		2 x 1 n/o contact, AC 250V,3A, DC 30V,5A
Environment	Operating temperature	-10℃ ~ +55℃
	Storage temperature	-20℃ ~ +70℃
	Humidity	≤95%RH, no condensation and corrosive gas
	Altitude	≤2000m
weight	AIM-D500-CA	244.3g
weight	ACPD300	86.1g
Certification	CE, IEC,RoHS

Dimension & Wiring Diagram

Application Scenario

About Acrel

"Optimized Energy Efficiency, Empower Green Future."

Founded in 2003, Acrel Co., Ltd.【Stock Code: 300286.SZ】 is a high-tech enterprise specializing in energy management solutions and electrical safety. Headquartered in Shanghai, Acrel offers innovative and sustainable solutions for microgrid energy efficiency and electrical safety. With over 600 patents and software copyrights, Acrel has deployed more than 28,000 system solutions globally, forming a comprehensive "cloud-edge-end" energy internet architecture.

Acrel's integrated product ecosystem spans from cloud platform software to end-user components, covering sectors such as power, renewable energy, data centers, smart buildings, transportation, and smart cities. These solutions enable intelligent, real-time energy management, enhancing energy security and reducing operational costs.

The company's production facility, Jiangsu Acrel Electric Manufacturing Co., Ltd., adheres to strict quality standards and environmental guidelines, with advanced testing centers and a commitment to lead-free production processes. Acrel's team of over 500 engineers delivers cutting-edge energy efficiency systems and smart energy solutions.

With a strong domestic presence, Acrel is actively expanding internationally, supported by a global network of sales and technical teams and an e-commerce platform that ensures seamless service experiences worldwide. Acrel is proud to help businesses improve efficiency, reduce consumption, and achieve sustainability goals.

Together, we are building a smarter, greener future.