The world's first EOCR with built-in ZCT (bottom hole & terminal type) will save space, time and wiring through unique development design during installation. with compact size, possible to be applied to various panel size. the protection function added for high groud fault current. most suitable for low frequency circumstance (5Hz~, Inveter use) can cover wide range current through product innovation, so it leads to the decrease of customer's managing stocks and simplicity of replacement.
Applications Building Industrial facilities Office, commercial business, residence, school, hospital Petrochemical, electronic, glass, steel, semiconductor, chemical, medicine, cement, paint
Control power Rated current 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 ● C-Type ● 95-96(b), 97-98(a) : OL/GR ● 07-08(a) : AL/UL/TO ● Public institutions Gas, water supply and drainage, airport, train, port Over current : 0.5~80A (Definite) GF current : 0.
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 EOCR-i3BZ / i3BZ2 Bottom hole type EOCR-iFBZ / iFBZ2 Bottom hole type EOCR-i3BZi / 3BZ2 Terminal type EOCR-iFBZ / iFBZ2 Terminal type General Features Earth fault detection by built-in ZCT Multifunctional motor protection for rated motor currents up to 80A (Definite Overcurrent protection) : Over Current,
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 Protection functions Item Operating Condition & Setting Range Load current(In) exceeds threshold(Is) Setting Range : 0.5~80A(Def), 0.
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 Specifications Model Over Current i3BZ/iFBZ, 3BZ2/FBZ2 Rated Setting Range(A) Definite TCC : 0.5~80A Inverse & th TCC : 0.5~32A *** CAUTION : Do not use any external CT Under Current Rated Setting Range(A) Operating Time Characteristics Time Setting Control Output Display Definite 0.
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 1. Inverse characteristic (0.5~32A) 2. Definite characteristic 3. Inverse thermal characteristic (0.
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 current threshold (OC) : - Set the OC at the rating current of a motor. To protect machine together, it is recommended to set at 110~120% of the actual normal operating current. 2.
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 7 segment LED display Reset Mode selection Phase indication LED LED Phase indication L1/L2/L3 Ampere(A) Second(s) Bar graph Set/Store Power GR NO Output Communication OL NO Output OL NC Output 7 segment LED display Reset Mode selection Set / Store 65 70 75 80 85 90 95 100% 5 digit 7
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 3 phase digital ammeter function 2sec L2 current display L1 current display 2sec Rotate 2sec 2sec GF current L3 current display ※Blocking display rotation can be done by pressing the SET button once during running. whenever press the SET button, the each phase current displays by turns.
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 Setting sequence and menu No. Menu Parameter Description Default Use password other than zero for secured configuration. This feature enables 1 Password limitation of setting modification by unauthorized person. Zero value is used for disabling password checking.
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 Setting sequence and menu No. Menu 22 Alert Parameter *1) Description Threshold of Alert output, set by % of the over current threshold (oc). If the load current is higher than this value, alert output(07-08 contact) is energized according to the setting of “ALo:XX”.
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 Trip cause indication and fault records 3 fault records including the trip cause and 3phase currents are stored in a non-volatile memory.
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 3 phase line Diagram 3 phase line Diagram EOCR-i3BZ/iFBZ OL : b, GR : a EOCR-i3BZ/iFBZ OL : 1a 1b, GR : 1a Caution 1. Do not use any External CT 2. Earth fault detection by built-in ZCT Caution 1. Do not use any External CT 2.
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 21.4 56.3 70 21.4 3-∅12 ∅4.5 82 95 108.1 EOCR-i3BZ / 3BZ2 (Bottom Hole) 53.3 MOUNTING HOLE SIZE 21.4 21.4 91.3 PANEL & DIN RAIL TYPE ∅4.5 45.3 6-M4 70 EOCR-i3BZ / 3BZ2 (Teminal Type) 82 108.1 95 PANEL & DIN RAIL TYPE MOUNTING HOLE SIZE 21.4 56.3 70 21.4 3-∅12 ∅4.
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 For nEOCR- order i 3 B Z - � A U H L WR � � Basic Unit Intelligent, flush mounting unit 3BZ2 Economic, panel mounting unit � Output relay C � Low frequency adaptation � Intelligent, panel mounting unit A � Wiring method � i3BZ WR � Control Voltage � iFBZ FBZ2 � Current Range
Communication Guide Modbus network setting 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 Communication speed provided is like below. �1.2kbps �2.4kbps �4.8kbps �9.6kbps �19.2kbps �38.4kbps The factory default setting is 19.
Communication Guide Standard connection 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 case of a direct connection to the bus. Items Type of trunk cable Contents single, shielded, twisted pair cable.
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 : 120Ω - 0.25W Please use a cable with 2pair shieded twisted conductors for Interface protection. It is adviced to isolate the Modbus cable 30cm(11.8in) at least from a power cable.
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