ABB COV-6 Instruction Leaflet Download Page 20

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41-116.1C

COV Voltage Controlled Overcurrent Relay

Printed in U.S.A

ABB Automation Inc.

4300 Coral Ridge Drive

Coral Springs Florida 33065

TEL: 954-752-6700

FAX: 954-345-5329

visit our website at www.abbus.com/papd

Figure 11: Outline and Drilling Plan for the Type COV Relay in Type FT21 Case (For Class 1E Application)

Sub 4
3519A66

Summary of Contents for COV-6

Page 1: ...ave been specially designed and tested to establish their suitability for Class 1E appli cations in accordance with the ABB Relay Division program for Class 1E Qualification Testing as detailed in Bul...

Page 2: ...g is held in position by a spring type clamp The spring adjuster is located on the underside of the bridge and is attached to the moving contact arm by a spiral spring The spring adjuster is also held...

Page 3: ...ll respond to multi ples of tap value currents in accordance with the var ious typical time current curves The factory adjustment of the CO unit contacts provides a contact follow Where circuit breake...

Page 4: ...By turning the time dial move the moving contacts until they deflect the stationary con tact to a position where the stationary contact is resting against its backstop The index mark located on the m...

Page 5: ...er trips and the target drops Then release the contacts and observe that the reset is smooth and positive If an additional time check is desired pass second ary current through the relay and check the...

Page 6: ...ntil the operation time corresponds to the value of Table 1 For type COV 11 relay only the 1 30 times tap value operating time from the number 6 time dial position is 54 9 5 seconds It is impor tant t...

Page 7: ...pedestal and moving the ICS in the downward position a Contact Wipe Adjust the stationary contact so that both stationary contacts make with the moving contacts simultaneously and wipe 1 64 to 3 64 w...

Page 8: ...Y REQUIREMENTS COV 7 OVERCURRENTS UNITS Ampere Range Tap Continuous Rating Amperes One Second Rating Amperes Power Factor Angle Volt Amperes At Tap Value Current At 3 Times Tap Value Current At 10 Tim...

Page 9: ...Range Tap Continuous Rating Amperes One Second Rating Amperes Power Factor Angle VOLT AMPERES At Tap Value Current At 3 Times Tap Value Current At 10 Times Tap Value Current At 20 Times Tap Value Cur...

Page 10: ...COV Voltage Controlled Overcurrent Relay Telephone Relay T Overcurrent Unit CO Indicating Contactor Switch ICS Figure 1 Type COV Relay without case 1342D82A01 Photo Voltage Unit Adjustable Resistor Vo...

Page 11: ...41 116 1C 11 COV Voltage Controlled Overcurrent Relay Sub 6 3526A40 Figure 2 Internal Schematic of the Type COV Relay in the Type FT 21 Case For Class 1E Application...

Page 12: ...NORMAL CURRENT IN PERCENT OF FULL LOAD The Trip Area May be Changed as Follows The line bc may be moved in the direction of arrow y by changing the voltage unit setting The line ab may be moved in the...

Page 13: ...41 116 1C 13 COV Voltage Controlled Overcurrent Relay Figure 4 Typical 50 and 60 hertz Time Curves of COV 6 Overcurrent Unit 619511 Sub 1...

Page 14: ...41 116 1C 14 COV Voltage Controlled Overcurrent Relay Figure 5 Typical 50 and 60 hertz Time Curves of COV 7 Overcurrent Unit 619512 Sub 1...

Page 15: ...41 116 1C 15 COV Voltage Controlled Overcurrent Relay Figure 6 Typical 50 and 60 hertz Time Curves of COV 8 Overcurrent Unit 619513 Sub 1...

Page 16: ...41 116 1C 16 COV Voltage Controlled Overcurrent Relay Figure 7 Typical 50 and 60 hertz Time Curves of COV 9 Overcurrent Unit 619514 Sub 1...

Page 17: ...41 116 1C 17 COV Voltage Controlled Overcurrent Relay Figure 8 Typical 50 and 60 hertz Time Curves of COV 11 Overcurrent Unit 619515 Sub 1...

Page 18: ...41 116 1C 18 COV Voltage Controlled Overcurrent Relay Figure 9 Diagram of Test Connections of COV Relays 1582C85 Sub 6...

Page 19: ...41 116 1C 19 COV Voltage Controlled Overcurrent Relay Figure 10 External Schematic of the COV Relay on a Generator Sub 2 3531A56...

Page 20: ...S A ABB Automation Inc 4300 Coral Ridge Drive Coral Springs Florida 33065 TEL 954 752 6700 FAX 954 345 5329 visit our website at www abbus com papd Figure 11 Outline and Drilling Plan for the Type COV...