Ground Fault Systems DGF100, Manual

Page 1: ...gital Ground Fault unit reference manual www groundfaultsystems com info groundfaultsystems com Tel 31 53 4318628 CofC 55400914 Ground Fault Systems B V Rigtersbleek Aalten 4B15 7521 RB Enschede The Netherlands ...

Page 2: ...3 Control Voltage Error Bookmark not defined 6 4 System power 15 6 5 Terminals 15 6 6 Relay contacts 16 6 7 Mechanical properties installed 16 6 8 Display datalink circuit 17 6 9 Environment 17 7 APPLICABLE STANDARDS 18 8 TABLES AND FIGURES 19 8 1 Table 1 Dipswitch settings 19 8 2 Table 2 Primary current Trip Level 20 8 3 Tables 3 Trip Time Accuracy 21 8 3 1 Table 3a Current level 0 030 2 5 A 21 8...

Page 3: ...l test of the DGF100 is started by either double clicking the cover mounted or external button or by invoking a test on the DGF100 Display A green RUN LED flashes alternating one second on and off to indicate that sufficient control power is applied to terminals L and N Power OK A red TRIP LED indicates that the DGF100 has sensed a Ground Fault and that the output contacts have operated 7 point an...

Page 4: ...nals T1 T2 3 0 900 A by passing the 5 A secondary of an interposing CT with a current ratio of 500 5 through the built in 46 mm CS 30 9000 A by passing the 5 A secondary of an interposing CT with a current ratio of 5000 5 through the built in 46 mm CS See Table 1 2 1 2 Ground Fault Trip Current level dipswitches 2 3 4 5 The Ground Fault Trip Current level is 30 mA 9000 A in different ranges Table ...

Page 5: ...ntrol Voltage is removed In this condition the red TRIP LED does not light If Control Voltage is maintained after a ground fault trip the reset button must be pushed to reset the relay after clearing the ground fault If Control Voltage is removed after a ground fault is detected the output relay remains tripped If the ground fault has not been cleared when Control Voltage is restored the relay rem...

Page 6: ...less of the Trip Delay time after 500 milliseconds the relay goes to the tripped state for 0 5 seconds then resets The red TRIP LED will turn on If the ground fault has been cleared when Control Voltage is restored the unit will remain in reset state and the green LED will flash If the DGF100 is to be used for alarm only purposes rather than to interrupt ongoing processes and the alarm has to have...

Page 7: ... Chassis Ground Chassis ground is the ground to which all of the non current carrying metal equipment is connected bonded In order to meet the Electromagnetic Compatibility EMC requirements a firm and short connection is required between terminal FB and the chassis ground point The chassis ground must not be more than 50 mm away from the unit If the DGF100 is mounted on a 35 mm DIN rail a DIN rail...

Page 8: ...ST pushbutton See section 2 3 Ground Fault Test for a description of the test procedure The RESET button must be held pressed before the TEST is pressed to invoke the test procedure The function of this button can be enabled disabled by inserting the interconnecting cable from the DGF100 base unit into one of two sockets TEST ON or TEST OFF on the right side of the display If the feature is disabl...

Page 9: ...5000 5 ratio interposing CT is used all displayed values are to be interpreted as kA rather than A Two blank boxes to the right of the LCD display window are marked A and kA Use a permanent marker to check the appropriate box as follows A when using the built in CS an external CS or a 500 5 ratio interposing CT kA when using a 5000 5 ratio interposing CT ...

Page 10: ...um EMC performance and safety the FB Frame Bond terminal must be firmly connected to the local frame or chassis ground The chassis ground must not be more than 50 mm away from the unit If the DGF100 is mounted on a 35 mm DIN rail a DIN rail ground terminal block can be installed beside the unit to act as the chassis ground point Use a 2 2 5 mm2 14 AWG stranded conductor Control Voltage is subseque...

Page 11: ...cting ac or dc Control Voltage s cold side 11 and 12 for access to the normally closed N C contact of the relay 13 and 14 for access to the normally open N O contact of the relay 7 In order to meet the Electromagnetic Compatibility EMC requirements a firm and short connection is required between terminal FB and the chassis ground point The chassis ground must not be more than 50 mm away from the u...

Page 12: ... 6 2 14 Up to six DGF100 units in the same enclosure may share a common remote Reset Test button Connect one terminal of the button to terminal T2 R2 of one of the units and connect the other terminal of the button to terminals R1 of all the units in parallel See figure 5 15 Position power cables in the centre of the current sensor opening Keep cables and buswork clear of the split on split core c...

Page 13: ... sequence current sensor 144 mm window 1000 1 ratio CS10 240 Zero sequence current sensor 240 mm window 1000 1 ratio CS10 1025 Zero sequence current sensor 100 x 250 mm window 1000 1 ratio CS10 1035 Zero sequence current sensor 100 x 350 mm window 1000 1 ratio CS10 2028 Zero sequence current sensor 200 x 280 mm window 1000 1 ratio CS20 95 Zero sequence current sensor 95 mm window 2000 1 ratio CS20...

Page 14: ...0 ms 5000 A 20 ms 1000 A 500 ms Thermal withstand capability with external CS Ratio 10 000 1 10 000 A 3 00 s 50 000 A 1 00 s 200 000 A 0 05 s Suitable external CS types Different sizes with 500 1 1000 1 2000 1 and 10 000 1 ratio including split rectangular sensors See section 5 1 The accuracy of the trip point refers to the value of the real world leakage current assuming a purely sinusoidal wave ...

Page 15: ...ce no impaired operation 50 ms 38 V dc 180 ms 80 V dc 400 ms 138 V dc 70 ms 38 V ac 250 ms 80 V ac 600 ms 138 V ac Power up time 500 ms for G F detection 6 4 System power Voltage and current range internal CS 0 660 V ac 0 100 A Voltage and current range external CS Any providing the power conductors are insulated for the system voltage Frequency range 45 65 Hz or 400 Hz Isolation voltage internal ...

Page 16: ...y AC 12 4 A 250 V ac utilization category AC 13 3 A 250 V ac utilization category AC 14 3 A 250 V ac utilization category AC 15 5 A 30 V dc utilization category DC 12 3 A 24 V dc utilization category DC 13 Maximum fuse rating 13 A EN 60947 5 1 Isolation voltage between contacts and coil 3 kV RMS 50 60 Hz 1 minute Breakdown voltage between open contacts 1 kV RMS 50 60 Hz 1 minute 6 7 Mechanical pro...

Page 17: ...nals RJ 10 telephone connector 6 9 Environment Operating temperature 20 C to 50 C Storage temperature 40 C to 80 C Humidity 85 max no condensation Ingress protection IP20 Shock resistance no malfunction 10 G Vibration resistance no malfunction 10 G 10 55 Hz at 1 5 mm double amplitude The DGF100 is encapsulated in Poly Urethane PUR to keep the exposure to mechanical shock and vibration to a minimum...

Page 18: ... 3 Radiated electromagnetic field immunity EN 61000 4 4 Electromagnetic compatibility EMC for industrial process measurement and control equipment Part 4 4 Electrical fast transient burst immunity EN 61000 4 5 Electromagnetic compatibility EMC for industrial process measurement and control equipment Part 4 5 Surge immunity EN 61000 4 6 Electromagnetic compatibility EMC for industrial process measu...

Page 19: ...T 2 3 4 5 Ground Fault Trip level D D D D D D D U D D U D D D U U D U D D D U D U D U U D D U U U U D D D U D D U U D U D U D U U U U D D U U D U 0 030 A 0 040 A 0 060 A 0 090 A 0 150 A 0 250 A 0 40 A 0 60 A 0 90 A 1 50 A 2 50 A 4 00 A 6 00 A 9 00 A 6 7 8 Ground Fault Trip Delay time D D D D D U D U D D U U U D D U D U U U D U U U 20 ms 50 ms 100 ms 200 ms 500 ms 1000 ms 2000 ms 5000 ms 9 10 Opera...

Page 20: ...6 A 0 060 kA 0 090 A 0 090 A 0 180 A 0 360 A 1 80 A 9 A 0 090 kA 0 150 A 0 150 A 0 300 A 0 60 A 3 0 A 15 A 0 150 kA 0 250 A 0 250 A 0 50 A 1 00 A 5 0 A 25 A 0 250 kA 0 40 A 0 40 A 0 80 A 1 60 A 8 0 A 40 A 0 40 kA 0 60 A 0 60 A 1 20 A 2 40 A 12 0 A 60 A 0 60 kA 0 90 A 0 90 A 1 80 A 3 60 A 18 0 A 90 A 0 90 kA 1 50 A 1 50 A 3 00 A 6 00 A 30 0 A 150 A 1 50 kA 2 50 A 2 50 A 5 00 A 10 00 A 50 0 A 250 A ...

Page 21: ...3 220 ms 197 214 ms 500 ms 531 581 ms 507 544 ms 497 531 ms 491 525 ms 1000 ms 1031 1081 ms 1007 1044 ms 997 1031 ms 991 1025 ms 2000 ms 2031 2081 ms 2007 2044 ms 1997 2031 ms 1991 2025 ms 5000 ms 4890 5081 ms 4867 5044 ms 4856 5031 ms 4850 5025 ms 8 3 2 Table 3b Current level 4 A Trip Current Level set at 4 A Trip Delay setpoint Delay when current exceeds trip current setting by a factor of 1 2 2...

Page 22: ...531 581 ms 507 544 ms 498 537 ms 1000 ms 1031 1081 ms 1007 1044 ms 998 1037 ms 2000 ms 2031 2081 ms 2007 2044 ms 1998 2037 ms 5000 ms 4890 5081 ms 4867 5044 ms 4857 5037 ms 8 3 4 Table 3d Current level 9 A Trip Current Level set at 9 A Trip Delay setpoint Delay when current exceeds trip current setting by a factor of 1 2 1 7 20 ms 57 90 ms 33 55 ms 50 ms 87 120 ms 63 85 ms 100 ms 137 170 ms 113 13...

Page 23: ...PAGE 23 OF 26 DGF100 reference manual rev 1 Feb 22 2022 Ground Fault Systems B V 8 4 Figure 1 Typical field connection using built in Current Sensor remote test reset and DGF100 Display ...

Page 24: ...PAGE 24 OF 26 DGF100 reference manual rev 1 Feb 22 2022 Ground Fault Systems B V 8 5 Figure 2 Typical field connection with external Current Sensor and DGF100 display ...

Page 25: ...PAGE 25 OF 26 DGF100 reference manual rev 1 Feb 22 2022 Ground Fault Systems B V 8 6 Figure 3 Typical field connection with interposing Current Transformer and DGF100 display ...

Page 26: ...PAGE 26 OF 26 DGF100 reference manual rev 1 Feb 22 2022 Ground Fault Systems B V 8 7 Figure 4 Dimensions DGF100 8 8 Figure 5 Connection multiple DGF100s Back to Connections and precautions ...