Page 4 - Applications; Building
Applications Building Office, commercial business, residence, school, hospital Industrial facilities Petrochemical, electronic, glass, steel, semiconductor,chemical, medicine, cement, paint
Page 5 - Public institutions; Earth Fault
Public institutions Gas, water supply and drainage, airport, train, port Control power ● 24 VDC ● 85~260 VAC/DC, 50/60 Hz Composition by function ● Earth Fault ● i3BZ, iFBZ (with Modbus RS-485) ● 3BZ2, FBZ2 (without Modbus RS-485) Contact contact ● A-Type ● 95-96(b), 97-98(a) : OL ● 57-58(a) : GR ● ...
Page 6 - General Features
6 EOCR-i3BZ/iFBZ/3BZ2/FBZ2 EOCR-i3BZ / iFBZ : Intelligent Digital Over-Current, Earth Fault Relay with built-in ZCT,EOCR-3BZ2 / FBZ2 : Economic Digital Over-Current, Earth Fault Relay with built-in ZCT Earth fault detection by built-in ZCT Multifunctional motor protection for rated motor currents up...
Page 8 - Specifications
8 EOCR-i3BZ/iFBZ/3BZ2/FBZ2 EOCR-i3BZ / iFBZ : Intelligent Digital Over-Current, Earth Fault Relay with built-in ZCT,EOCR-3BZ2 / FBZ2 : Economic Digital Over-Current, Earth Fault Relay with built-in ZCT Over Current Rated Setting Range(A) Definite TCC : 0.5~80A Inverse & th TCC : 0.5~32A *** CAUT...
Page 9 - Time-current characteristic curve
9 EOCR-i3BZ/iFBZ/3BZ2/FBZ2 EOCR-i3BZ / iFBZ : Intelligent Digital Over-Current, Earth Fault Relay with built-in ZCT,EOCR-3BZ2 / FBZ2 : Economic Digital Over-Current, Earth Fault Relay with built-in ZCT Time-current characteristic curve 2. Definite characteristic 3. Inverse thermal characteristic (0....
Page 10 - Over current and time setting tips; Over current
10 EOCR-i3BZ/iFBZ/3BZ2/FBZ2 EOCR-i3BZ / iFBZ : Intelligent Digital Over-Current, Earth Fault Relay with built-in ZCT,EOCR-3BZ2 / FBZ2 : Economic Digital Over-Current, Earth Fault Relay with built-in ZCT Over current and time setting tips ● Over current Setting tips in definite TCC mode 1. Over curre...
Page 11 - Front face; Bar graph; digit 7 segment LED display
11 EOCR-i3BZ/iFBZ/3BZ2/FBZ2 EOCR-i3BZ / iFBZ : Intelligent Digital Over-Current, Earth Fault Relay with built-in ZCT,EOCR-3BZ2 / FBZ2 : Economic Digital Over-Current, Earth Fault Relay with built-in ZCT Front face 3 phase currents (In) and the leakage current are displayed every 2 seconds in sequenc...
Page 12 - Rotate; phase digital ammeter function; Buttons and Setting Sequence; Setting sequence
12 EOCR-i3BZ/iFBZ/3BZ2/FBZ2 EOCR-i3BZ / iFBZ : Intelligent Digital Over-Current, Earth Fault Relay with built-in ZCT,EOCR-3BZ2 / FBZ2 : Economic Digital Over-Current, Earth Fault Relay with built-in ZCT L1 current display 2sec 2sec 2sec 2sec L2 current display Rotate L3 current display GF current 3 ...
Page 13 - Setting sequence and menu
1 Password 2 Selection of Phase 3 TCC Selection 4 Frequency 5 Fail Safe Reversed Phase 6 detection 7 Over Current Threshold 8 Start Delay Time 9 Over Current Duration Under Current 10 Threshold Under Current 11 Duration Earth Fault 12 (Ground Fault) Threshold 13 Earth Fault Duration 14 EF starting D...
Page 16 - Wiring Examples
16 EOCR-i3BZ/iFBZ/3BZ2/FBZ2 EOCR-i3BZ / iFBZ : Intelligent Digital Over-Current, Earth Fault Relay with built-in ZCT,EOCR-3BZ2 / FBZ2 : Economic Digital Over-Current, Earth Fault Relay with built-in ZCT Wiring Examples EOCR-i3BZ/iFBZ OL : b, GR : a EOCR-i3BZ/iFBZ OL : 1a 1b, GR : 1a 3 phase line Dia...
Page 17 - Dimensions
17 EOCR-i3BZ/iFBZ/3BZ2/FBZ2 EOCR-i3BZ / iFBZ : Intelligent Digital Over-Current, Earth Fault Relay with built-in ZCT,EOCR-3BZ2 / FBZ2 : Economic Digital Over-Current, Earth Fault Relay with built-in ZCT Dimensions EOCR-i3BZ / 3BZ2 (Bottom Hole) EOCR-i3BZ / 3BZ2 (Teminal Type) 70 95 82 ∅ 4.5 6- M 4 2...
Page 18 - Order Code; WR
18 EOCR-i3BZ/iFBZ/3BZ2/FBZ2 EOCR-i3BZ / iFBZ : Intelligent Digital Over-Current, Earth Fault Relay with built-in ZCT,EOCR-3BZ2 / FBZ2 : Economic Digital Over-Current, Earth Fault Relay with built-in ZCT Order Code i3BZ Intelligent, panel mounting unit � Basic Unit iFBZ Intelligent, flush mounting un...
Page 19 - Modbus network setting; Communication Guide
19 Communication setting value Please set the Modbus communication parameters by PCON or HMI for the communication. � Slave address � Baud rate � Parity � Communication loss timeout Slave address The EOCR has slave addresses from 1 to 247. The factory default setting is 1. Baud rate The Communicatio...
Page 20 - Standard connection
20 Communication Guide The standard connection conforms to the Modbus specifications, sepecially 2 wire multidrop serial bus diagram, presented at the website of Modbus.org in 2002 (Modbus_over_serial_line_V1.pdf, Nov.2002). Simple wiring diagram is like below. The characteristics is like below in c...
Page 21 - Bus connection through a SCA type junction box; wire MODBUS RJ45 connections; Pin on nEOCR
21 Communication Guide Bus connection through a SCA type junction box 1. Master (PLC, PC or communication module) 2. Modbus cable (It is different according to the master side or a master having polarization combined to the other part of Bus) 3. Junction box 4. Modbus cable 5. Line terminators : 120...
