ROOTECH - Energy Solution for Human and Nature

Join

KOREAN

Product

Support

Digital Protection Relay

Distribution Digital Power Meter

Smart Motor System

Digital Power Meter

Digital Power Quality Meter

Digital Protection Relay

Software

Discontinue

Accura 7500

Accura 7500 Digital Protection Relay

Integrated Digital Protection Relay

Accura 7500 is a digital protection relay and high-accuracy power meter
with measurement and relay functions for efficient power control and monitoring.

Accura 7500

Integrated Digital Protection Relay

Accura 7500 is a digital protection relay and high-accuracy power meter with measurement and relay functions for efficient power control and monitoring.

Overview

Features

Specifications

FAQ

Download

Overview
Features
Specifications
FAQ
Download

Voltage Input
PT rating	110V - 770kV/50 - 260V
PT ratio	1 - 7,000/in steps of 0.01
Frequency rating	50/60Hz
Burden	0.04VA/phase @ 260V
Overvoltage withstand capability	Less than AC 260 V(the device keeps operating.)/AC 2,000 V(the device can withstand overvoltage for more than 1 minute.)
Wiring mode	Open-delta connection using 3 PTs
Line-to-neutral Current, Neutral Current Input
CT rating	1 - 50,000A/5A
Burden	0.05VA/phase @ 5V
Overload withstand capability	15 A(the device keeps operating.)/100 A (the device can withstand overload for 2 seconds.)
Zero-sequence Current Input
ZCT rating	200mA/1.5mA
Burden	0.05VA/phase @ 10mA
Overload withstand capability	0.1 A(the device keeps operating.)/10 A (the device can withstand overload for 2 seconds.)
Digital Input
CB state input	1 channel
Digital inputs	7 channels
Wet contact point	DC 70-125V(external power supply)
Insulation
All inputs/outputs	AC 2,500V for 1 minute
Digital Output: CB ON, CB OFF Relay
Contact output type	Form A contact
Contact rating(resistive load)	25A @ AC 240V, 20A @ DC 30V
Contact rating (inductive load cosØ = 0.7)	20A @ AC 250V(inrush 80A)
Contact resistance	Maximum 50 mΩ
Insulation resistance	Minimum 100 MΩ @ DC 500 V
Digital Output: Alarm, Aux. Relay
Contact output type	Form A contact
Contact rating(resistive load)	10A @ AC 125 V, 5 A @ AC 250 V, 5A @ DC 30 V
Maximum switching power	1,250 VA, 150 W
Maximum switching voltage	AC 250 V, DC 110 V(0.3 A)
Contact resistance	Maximum 100 mΩ
Insulation resistance	Minimum 1000 MΩ @ DC 500 V
Environmental Conditions
Operating temperature	-20 to 70℃(-4 to 158℉)
Storage temperature	-40 to 85℃(-40 to 185℉)
Operating humidity	5% - 95%(non-condensing)
Operating altitude	Up to 2,000 m
Case
Method for taking out the casing	Front draw-out type(automatic CT shorting)
Mounting option	Panel or 19" rack
Weight	4.6kg

Measurements
64 samples/cycle, True RMS measurement
IEC 62053-22 Class 0.5S
Support for 50/60 Hz
Power, Energy, Power factor, Frequency
Energy	Received energy, Delivered energy
	Net energy (Received energy- Delivered energy)
	Sum(total) energy (Received energy + Delivered energy)
Line-to-neutral voltage, line-to-line voltage, current
Fundamental component/True RMS value of current
4-quadrant power
Demand, peak demand
Maximum/ minimum value
Protection Relays
Offers the protection function based on the fundamental frequency components of voltage and current
32 samples/cycle
Provides real-time protection for each sampling cycle
Time resolution for event detection: 1 ms
Event recording
Power Quality
Voltage/current THD
Harmonics analysis¹
K-Factor¹
Communication
RS-485 port (on the back of the device)	Modbus RTU protocol
	Communication speed : 1,200 - 38,400 bps
Power Supply
AC 85 - 265 V, 50/60 Hz
DC 100 - 300 V
Power consumption : 20 VA (max 25 VA)