Jy1000-St 85-1000V RS485 DC Insulation Monitoring Relay for DC Floating System

• Customization: Available
• Theory: Electromagnetic Relay
• Usage: Insulation Monitor
• Model NO.: JY1000-ST
• Phase: 3
• Electricity Type: Dc
• Number of Pole: 2
• Load: Medium Power Relay
• Protective Characteristics: Enclosed Relay
• Action Principle: Electromagnetic Type
• Size: Miniature
• Type: Electric Parameter Relay
• Protect Feature: Sealed
• Contact Load: High Power
• Application: EV Charger
• Channels: 1 Channel
• Transport Package: Please Consult for Details
• Specification: 10*10cm
• Trademark: blue jay
• Origin: Chongqing, China
• Production Capacity: 1000 Piece/Pieces Per Month
• Package Size: 10.00cm * 10.00cm * 10.00cm
• Package Gross Weight: 0.650kg

Product Description

Description

JY1000-ST is a DC insulation monitoring device based on MODBUS protocol, including DC to ground insulation impedance monitoring, DC voltage monitoring, DC voltage reverse connection alarm and other safety monitoring functions. It can be used for electric vehicle DC charging system, photovoltaic systems, energy storage systems, DC grids and other DC systems below 1000V.

This product has the function of starting and stopping insulation monitoring. After insulation monitoring is started, the insulation resistance of positive and negative poles to the ground can be monitored in real-time. The monitoring result is not affected by DC voltage fluctuation, and is not affected by the symmetry of insulation resistance of positive and negative poles.

Feature

* Wide power supply range

* Widely insulation monitoring range (100V~1000VDC)

* insulation monitoring equipment self-test

* Adaptive capacitance to ground

* Convenient parameter setting

* Remote monitoring and management

* Monitor positive and negative poles

* Ground insulation resistance

* Voltage reverse polarity alarm

The internal resistance of the insulation monitoring module to ground is 3MΩ or 600KΩ.

Specification

Parameter	Value
Power supply	10-30VDC, Power 3w
DC voltage range	100V~1000V
DC voltage measurement accuracy	≤2V+0.3%
Insulation resistance measurement range	1KΩ~10 MΩ (DC System voltage:100V~1000V)
Insulation monitoring accuracy ((When :DC voltage:100V-1000V)	CYrange	Resistance range	Accuracy
	0~0.8μF	≤60kΩ	≤3kΩ
		60kΩ<R≤1MΩ	≤5%
	0.8μF ~3μF	≤60kΩ	≤6kΩ
		60kΩ<R≤1MΩ	≤20%
Off-line pressure test	<2mA
Standard	IEC 61851-23 (2014-03):2014-11
Humidity	85%
Storage temperature	– 40°C ~125°C
Operating temperature	– 40°C ~75°C

Pressure point	Maximum voltage rating	Time
DC+/DC- To GND	4200VDC/3000VAC	≤1min
Power supply +/- To GND	3500VDC/2500VAC	≤1min
RS485 A/B To GND	3500VDC/2500VAC	≤1min
DC+/DC- To Power supply +/-	3500VDC/2000VAC	≤1min
DC+/DC- TO A/B	3500VDC/2000VAC	≤1min

Company Profile

Chongqing Blue Jay Technology Co., Ltd

Blue Jay is a professional Chinese local industrial power and energy meter manufacturer with over 10 years of experience. We hold full capabilities in industrial power and energy meter manufacture, which supports us in offering you a one-stop solution for OEM/ODM customers. Many times, we are not only manufacturing for you but also supporting your design according to your final applications.

Our capabilities include manufacturing and designing power and energy meter solutions. We can manufacture a variety of protection relays, such as motor protection relays, arc flash relays, DC insulation monitoring relays, and much more. 

Certifications

FAQ

Q1: Can we use an earth leakage relay instead of an insulation monitoring device? Do they provide the same protection?

A: No. An earth leakage relay is used in grounded neutral systems. It detects leakage current exceeding a preset current value (usually 5A) and issues a trip signal. An insulation monitoring device, on the other hand, is used in ungrounded neutral systems to monitor the system's insulation resistance, measured in ohms (Ω). An IMD issues an alarm when the insulation resistance falls below a set value. While tripping is generally not necessary, it does serve as a reminder that the primary fault must be addressed as soon as possible to prevent a dangerous secondary fault. The two devices are designed for completely different system types and have completely different protection mechanisms.

Q2: What is the insulation resistance range that Blue Jay IMD can measure?

A: The Blue Jay Insulation Monitoring Device (IMD) can measure insulation resistance in the range of 0 to 50 MΩ, allowing for effective monitoring of both low- and high-resistance insulation conditions in DC systems.