background image

2

EATON CORPORATION  Cutler-Hammer

 Information Sheets  70C1486H01

 WARNING

ONLY CERTIFIED AND COMPETENT PERSONNEL
SHOULD ATTEMPT TO INSTALL OR MAINTAIN
POTENTIALLY HAZARDOUS EQUIPMENT.

DO NOT ATTEMPT TO INSTALL OR PERFORM
MAINTENANCE ON EQUIPMENT 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. ALWAYS FOLLOW
SAFETY PROCEDURES.

EATON IS NOT LIABLE FOR THE MISAPPLICATION OR
MISINSTALLATION OF ITS PRODUCTS.

1.0 General

Per the above WARNING, it is highly recommended that
maintenance be conducted on electrical equipment
including circuit breakers with the system de-energized.

For situations that arise where this is not possible, the
Maintenance Mode function of the Digitrip 1150ARM family

(cat. 11ARMLSI, 11ARMLSIG, 11ARMLSIA)

 can reduce

Arc Flash incident energy that is generated on a fault
condition. This is accomplished by an analog trip circuit
which,  when armed, provides a fast acting response to the
fault. The reduced arc condition will occur only in devices
downstream of the trip unit in Maintenance Mode.This is
separate from the normal system protection setting of
Instantaneous. The Maintenance Mode is located in the
“SYSTEM” submenu of the programmable settings menu
(PGM SET). 

(See Appendix for screen details.)

 CAUTION

OBSERVE ALL RECOMMENDATIONS, NOTES, CAU-
TIONS, AND WARNINGS RELATING TO THE SAFETY
OF PERSONNEL AND EQUIPMENT. OBSERVE AND
COMPLY WITH ALL GENERAL AND LOCAL HEALTH
AND SAFETY LAWS, CODES, AND PROCEDURES.

A FLASH HAZARD ANALYSIS SHOULD BE DONE TO
DETERMINE PERSONAL PROTECTIVE EQUIPMENT
REQUIREMENTS.

2.0 Maintenance Mode Settings

The Maintenance Mode Settings provide the Arc Flash
Reduction setting. 2.5 x Rating Plug Value is the Maxi-
mum  reduction setting which correlates to the lowest
pickup value.

Available Trip current of Maintenance Mode Settings:

2.5 x   Rating Plug  Amperes

4.0 x  Rating Plug  Amperes

6.0 x  Rating Plug  Amperes

8.0 x  Rating Plug  Amperes

10.0 x Rating Plug  Amperes

3.0 Arming Maintenance Mode

There are three ways to arm the Maintenance Mode Arc
Flash Reduction setting. One method is via the local
keypad located on the trip unit. The setting is located in
the “SYSTEM” submenu of programmable settings (PGM
SET). When the Mainternance Mode Arc Flash reduction
setting is enabled, the message “Maintenance Mode
Enabled”

 

is displayed to confirm that the function is on. If

any key is pressed, the Maintenance Mode message is
removed and replaced by normal display messages. If no
keys are pressed, the Maintenance Mode message will
reappear after 10 seconds.

For the second method, a remote switch wired through the
breaker secondary contacts can remotely arm the
Maintenace Mode setting. A high quality, gold plated or
palladium contact is required in this application.The
Maintenance Mode Enabled message will verify that the
function is armed. 

(See wiring diagram on adjacent page.)

A  third method to arm the maintenance setting is via a
communication device. A Palm Pilot along with an IR Mint
device can be employed to arm the setting. By initiating
the ENABLE setting, the Maintenance Mode selection in
the control screen of the Palm, Maintenance Mode is set.
There is a confirmation screen that verifies the arming. A
BIM (Breaker Interface Module) is another communcation
method to arm the setting. When Maintenance Setting is
enabled via device communications, this setting must be
disabled by device communications.

Summary of Contents for Cutler-Hammer Digitrip 1150

Page 1: ...neral 2 2 0 Maintenance Mode Settings 2 3 0 Arming Maintenance Mode 2 4 0 Remote Indicator 3 5 0 Choosing the Reduction Setting 3 6 0 Tripping and Testing 3 Diagrams and Appendix Wiring Diagram 4 Display Matrix for Program Settings Menu 5 Display Matrix for Program Aux Relays Menu 6 Display Matrix for Program Accessory Bus 7 Display Matrix for Possible Events TRIP 8 Display Matrix for View Setting...

Page 2: ...S 2 0 Maintenance Mode Settings The Maintenance Mode Settings provide theArc Flash Reduction setting 2 5 x Rating Plug Value is the Maxi mum reduction setting which correlates to the lowest pickup value Available Trip current of Maintenance Mode Settings 2 5 x Rating Plug Amperes 4 0 x Rating Plug Amperes 6 0 x Rating Plug Amperes 8 0 x Rating Plug Amperes 10 0 x Rating Plug Amperes 3 0 Arming Mai...

Page 3: ... an indication that the Maintenance Mode setting is armed per one of the three methods described in section 3 0 In general the selection of one of the Reduction Settings should be determined and selected by a person who is experienced in power system analysis This setting choice normally does not change unless there are future system modifications that could increase or decrease fault levels at th...

Page 4: ...9 78 feet Use 20 AWG wire or larger Control voltage is 120 VAC or 230 VAC or 24 48 VDC or 125 VDC as ordered Check Magnum circuit breaker front cover for Trip Unit Power requirements A remote Stack Light Annunciator Panel or other remote indication device can be connected to remotely verify that the Digitrip is in Maintenance Mode RelayA contact changes state when Digitrip is in Maintenance Mode T...

Page 5: ...Auto OFF max kW max kVA ENABLED DISABLED DT 910 COMM 9600 1200 OPEN TRIP ENABLED DISABLED INCOM ADDRESS INCOM BAUD EXT COMM OpenTrip EXT COMM EXT COMM CLOSE 001 FFE in hex ENABLED DISABLED ENABLED DISABLED NOTE TRIP uses TA device OPEN requires a separate Shunt Trip wired through Aux Relay C terminals A 9 A 10 when programmed as EXT COMM TRIP via PowerNet Requires BC Reset auto in system Appendix ...

Page 6: ... RELAY functions is ENABLED PULSE INITIATE ENABLED PULSE ENABLED kVAh kWh DISABLED RELAY GND TRIP RELAY AmpUNBAL RELAY PH LOSS RELAY OverTEMP RELAY PlugTRIP RELAY CommTRIP ENABLED or DISABLED for all screens RELAY VolUnbal RELAY RevPower RELAY OF TRIP RELAY UF TRIP RELAY OV TRIP RELAY UV TRIP RELAY A GND ALRM RELAY A NeutALRM RELAY A LDPU RELAY A HighLOAD RELAY A OP ALARM RELAY A kW DMND RELAY A P...

Page 7: ...1 XXXX VIEW ADDR 04 XXXXXXXX XXXXXXXX OFF AUX BELL DEAD ALARM WATCH LDT SDT INST GndT GFAlm HLAlm MAINT SEL Each of the 4 addresses is a separate Save group ADDR 01 XXXXXXXX XXXXXXXX XXXXXXXX NO SETTINGS If no relay functions are enabled XXXXXXXX DIGITAL OUTPUT If any relay functions are enabled Save NOTE The MAINT Relay Function will act as an indicator that the Maintenance Mode is enabled and in...

Page 8: ... OUT OF BALANCE 1st Meter screens VOLT UN BALANCE TRIP L L Voltage and FREQ screens displayed See Note 5 PlugTRIP No data displayed 4 If IEC EF style EARTH will replace GROUND UndrVOLT TRIP L L Voltage and FREQ screens displayed See Note 5 RevPower TRIP Power kW screen displayed See Note 5 3 NEUTRAL TRIP is a Long Delay Trip on Neutral or 4th pole NEUTRAL TRIP 1st 2nd Meter screens Note 3 Addition...

Page 9: ...al Auto OFF max kW max kVA ENABLED DISABLED DT 910 COMM 9600 1200 OPEN TRIP ENABLED DISABLED INCOM ADDRESS INCOM BAUD EXT COMM OpenTrip EXT COMM EXT COMM CLOSE 001 FFE in hex ENABLED DISABLED ENABLED DISABLED NOTE TRIP uses TA device OPEN requires a separate Shunt Trip wired through Aux Relay C terminals A 9 A 10 when programmed as EXT COMM TRIP via PowerNet Requires BC Reset auto in system NOTE T...

Page 10: ... NO UNDERSTANDINGS AGREEMENTS WARRANTIES EXPRESSED OR IMPLIED INCLUDING WARRANTIES OF FITNESS FOR A PARTICULAR PUR POSE OR MERCHANTABILITY OTHER THAN THOSE SPECIFICALLY SET OUT INANY EXISTING CONTRACT BETWEEN THE PARTIES ANY SUCH CONTRACT STATES THE ENTIRE OBLIGATION OF EATON ELECTRI CAL INC THE CONTENTS OF THIS DOCUMENT SHALL NOT BECOME PART OF OR MODIFY ANY CONTRACT BETWEEN THE PARTIES IN NO EVE...

Reviews: