900EFR-BL-U Earth Fault Relay
Features :
! Earth Fault Monitoring in 1Ø and 3Ø Systems
! True RMS Measurement (AC)
! Power ON Delay,Trip Time Delay & Recovery Time Delay
! Adjustable Switching Hysteresis
! Two Alarm Relays with NC or NO Operation Selectable
! Test and Reset Function via Front / Remote
! LCD With Backlight
! DIN Rail Mount
Certification :
DIN 35mm
Display Specifications Output Specifications
Type Digital No. of Relays 2
Display Liquid crystal display with backlight Type of Output (Relay 1) 1 C/O SPDT
No. of LED 2 Type of Output (Relay 2) 1 C/O SPDT
No. of Push Button 3 Relay Rating NO / 5A@250V AC
NC / 3A@250V AC
LED Indications Chart
Auxiliary Supply Specifications
Condition 'R1' LED 'R2' LED
Supply Voltage (Factory Set) 85 to 270V AC / DC
Nominal Condition OFF OFF Frequency 50 / 60Hz
Fault Conditon ON ON
Environmental Specifications
Pre-Alarm OFF ON
Temperature Operating Temperature : 00 to +500
Storage Temperature : -200 to +750
Input Specifications Humidity (non-condensing) Upto 95% RH
Pollution Degree 2
Functions
Degree of Protection Devices IP20
Measurements Earth Fault Monitoring
Time Settings Power ON delay, Trip time delay,
Recovery time delay, Response Time Mechanical Specifications
Alarm Indications Trip
Mounting DIN Rail
Latching Selectable
Weight 150gms
Reset Auto / Manual (Remote & Front)
Screw Tightening Torque 0.5 NM
Electrical Connections 1Ø - 2 wire, 3Ø - 3 wire, 3Ø - 4 wire
Wire Size (Max) 4sq.mm
Frame Rating (CT Primary) 160A, 250A, 630A
M.C.C.B Rating Depends on Frame rating
Trip Setting (Earth Fault) 10% to 80% of selected MCCB Frame
Rating
Trip Time Settings
Power ON Delay 0.5 - 99.9 sec
Trip Time Delay 0 - 99.9sec
Recovery Time Delay 0 - 99.9sec (In Auto Reset Mode)
Respons Time < 100ms
Hysteresis 1 to 10% of fault current setting
Resolution
Current 0.1A (When fault current is less than
or equal to 99.9A)
1A (When fault current is greater
than 100A)
Accuracy
Current ±5% of Setting ±2 digits
Time ±5% of Setting ±100ms
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900EFR-BL-U Earth Fault Relay
Dimensions Compliance
Applicable EMI / EMC Standards
35mm 44mm
Product Standard : IEC 60947-2
Category Reference Standards Testing Level
Electrostatic Discharge IEC 61000-4-2 Level-3
Electrical Fast Transient / Brust IEC 61000-4-4 Level-3
Electromagnetic Field IEC 61000-4-3 Level-3
67.50mm
90mm
45mm
90mm
Surge IEC 61000-4-5 Level-3
Conducted RF IEC 61000-4-6 Level-2
Rated Power Frequency IEC 61000-4-8 Level-4
Voltage Dip / Short Interruptions IEC 61000-4-11 Level-3
Conducted Emissions CISPR-11 Class-B
70.50mm
Radiated Emission CISPR-11 Class-A
Emission & Immunity IEC 61326-1
Terminal Connection Safety IEC 61010-1
R T C Ordering Information
TEST
Product Code Supply Voltage Certification
RESET 900EFR-BL-U-CE 85 to 270V AC / DC
RELAY1
18 15 16 ACCESSORIES
NO1 COM1 NC1
EFCT
RELAY 2 D
A
26 25 28
NC2 COM2 NO2
S1 S2 N L C
B
EFCT Auxiliary
Supply E
L L1
O L2
A L3
D N
E
Dimensions (mm)
EFCT TYPE
A B EC D E
Timing Diagram EFCT 100X25 100 25 100 156 30
EFCT 140X35 140 35 114 201 32
Monitored
Fault Over trip EFCT 180X35 180 35 109 236 30
Current } Hysteresis
EFCT 220X50 220 50 128 276 32
Output
Ordering Information
Td T t
Product Code Current
Dimenssion in mm
Td = Power on delay Transformer Ratio
T = Trip time delay + Response time (tr)
tr = Response time EFCT 100/25 160/1A VAL CL1 100 x 25 160/1A
t = Recovery delay
EFCT 140/35 160/1A VAL CL1 140 x 35 160/1A
EFCT 140/35 250/1A VAL CL1 140 x 35 250/1A
EFCT 180/35 250/1A VAL CL1 180 x 35 250/1A
EFCT 180/35 630/1A VAL CL1 180 x 35 630/1A
EFCT 220/50 630/1A VAL CL1 220 x 50 630/1A
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