Eaton KES 310+ Instruction Leaflet Download Page 8

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© 2013 Eaton 

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Publication No. IL012001EN / TBG001055

Part Number: IL012001ENH04

October 2013

Eaton is a registered trademark. 

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respective owners.

Instruction Leaflet 

IL012001EN

Effective October 2013

Instruction Leaflet for the

KES 310+ Electronic Trip Unit

 

The instructions for installation, testing, maintenance, or repair 

herein are provided for the use of the product in general commercial 

applications and may not be appropriate for use in nuclear applica-

tions. Additional instructions may be available upon specific request 

to replace, amend, or supplement these instructions to qualify them 

for use with the product in safety-related applications in a nuclear 

facility.
The information, recommendations, descriptions, and safety nota-

tions in this document are based on Eaton’s experience and judg-

ment with respect to Retrofitting of Power Breakers. This instruction-

al literature is published solely for information purposes and should 

not be considered all-inclusive. If further information is required, you 

should consult an authorized Eaton sales representative.
The sale of the product shown in this literature is subject to the 

terms and conditions outlined in appropriate Eaton selling policies 

or other contractual agreement between the parties. This literature 

is not intended to and does not enlarge or add to any such contract. 

The sole source governing the rights and remedies of any purchaser 

of this equipment is the contract between the purchaser and Eaton.

NO WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING 

WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR 

MERCHANTABILITY, OR WARRANTIES ARISING FROM COURSE 

OF DEALING OR USAGE OF TRADE, ARE MADE REGARDING 

THE INFORMATION, RECOMMENDATIONS, AND DESCRIPTIONS 

CONTAINED HEREIN.

 In no event will Eaton be responsible to the 

purchaser or user in contract, in tort (including negligence), strict 

liability or otherwise for any special, indirect, incidental or conse-

quential damage or loss whatsoever, including but not limited to 

damage or loss of use of equipment, plant or power system, cost 

of capital, loss of power, additional expenses in the use of existing 

power facilities, or claims against the purchaser or user by its cus-

tomers resulting from the use of the information, recommendations 

and description contained herein.

Summary of Contents for KES 310+

Page 1: ...it Installation 2 2 Trip Unit Controls and Functions 4 3 Neutral Current Sensor Installation 6 4 100 Rated K Frame Breakers 7 Effective October 2013 Instruction Leaflet IL012001EN Instruction Leaflet for the KES 310 Electronic Trip Unit ...

Page 2: ... WHILE IT IS ENERGIZED DEATH OR SEVERE PERSONAL INJURY CAN RESULT FROM CONTACT WITH ENERGIZED EQUIPMENT ALWAYS VERIFY THAT NO VOLTAGE IS PRESENT BEFORE PROCEEDING 1 Trip Unit Installation Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 TORQUE 6TO 8 LB FT 3X 8TO 10 N m LINE END LOAD END TRIP UNIT RETAINING SCREWS TRIP UNIT TEST PORT TORQUE 18 23 LB IN 8X 2 0 2 6 N m Note N Wires for optional features ...

Page 3: ...nd Current Sensor Bend Tab at Scored Line and Break Out Notch Is Positioned Towards Load End of Circuit Breaker and Is Closer to Base than Cover Retaining Screw 3 Places Trip Unit Secondary Winding Connector Barrier Current Sensor Retaining Screw Position the trip unit together with the barrier and current sensor in the circuit breaker Make sure the latch bracket pin is properly seated in the slot...

Page 4: ...t conditions that exceed the short delay pick up setting the trip unit initiates a trip after a predetermined delay Note N In addition to the short delay trip function there is a fixed instanta neous override for the 400A 250A and 125A trip units The override for the 400A is fixed at 4400A the override for the 250A is fixed at 4200A and the override for the 125A is fixed at 3000A If a fault curren...

Page 5: ...rammed trip unit settings to be altered automatically to respond to different fault conditions and locations thereby local izing the effects of an interruption and providing positive coordi nation between circuit breakers Three wires exit the breaker with the following color code and function White Black Stripe Zone Out White Red Stripe Zone In and Black Common An example of a Zone Interlock syste...

Page 6: ...al is grounded but no phase to neutral loads are used the neutral cur rent sensor is not necessary In that case the white and grey leads on the trip should be cut off before installation If the system neutral is grounded and phase to neutral loads are used then the neutral current sensor must be used It should be connected to the breaker according to Figure 11 It has the same turns ratio as the ph...

Page 7: ...n accessory wir ing for ground fault breakers Then install the ground fault alarm and neutral current sensor connector printed circuit board as described previously CAUTION LEADS COULD BE DAMAGED IF IN CONTACT WITH MOVING PARTS ACCESSORY WIRES SHOULD BE FORMED AND ROUTED TO CLEAR ALL MOVING PARTS When the appropriate accessory and the connector board are installed there are up to three sets of lea...

Page 8: ...e considered all inclusive If further information is required you should consult an authorized Eaton sales representative The sale of the product shown in this literature is subject to the terms and conditions outlined in appropriate Eaton selling policies or other contractual agreement between the parties This literature is not intended to and does not enlarge or add to any such contract The sole...

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