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48049-136-02 4/01 Cedar Rapids, IA, USA Instruction Bulletin Retain for future use. English K849 MICROLOGIC ® 3.0A, 5.0A and 6.0A Electronic Trip Units The addition of either symbol to a “Danger” or “Warning” safety label indicates that an electrical hazard exists which will result in personal injury if the instructions are not followed. This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death. NOTE: Provides additional information to clarify or simplify a procedure. Electrical equipment should be installed, operated, serviced and maintained by qualified electrical personnel. This document is not intended as an instruction manual for untrained persons. This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. DANGER ! DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. WARNING ! WARNING indicates a potentially hazardous situation which, if not avoided, can result in death or serious injury. CAUTION ! CAUTION indicates a potentially hazardous situation which, if not avoided, can result in minor or moderate injury. hazardous situation which, if not avoided, can result in property damage. CAUTION, used without the safety alert symbol, indicates a potentially CAUTION NOTICE Read these instructions carefully and look at the equipment to become familiar with the device before trying to install, operate, service or maintain it. The following special messages may appear throughout this bulletin or on the equipment to warn of potential hazards or to call attention to information that clarifies or simplifies a procedure. ! English PLEASE NOTE: FCC NOTICE: 5 © 1999–2001 Schneider Electric All Rights Reserved Bulletin No. 48049-136-02 MICROLOGIC ® 3.0A, 5.0A and 6.0A Electronic Trip Units 4/01 Table of Contents English Section 1—General Information 7 Introduction 7 Communications 7 Trip Unit Settings 7 MICROLOGIC 3.0A Trip Unit 8 MICROLOGIC 5.0A Trip Unit 8 MICROLOGIC 6.0A Trip Unit 9 Zone-selective Interlocking 9 Trip Unit Switches 10 Long-time Protection 10 Short-time Protection 11 Instantaneous Protection 12 Ground-fault Protection for Equipment 12 Indicator Lights 13 Overload Indicator Light 13 Trip Indicator Lights 13 Self-protection Indicator Light 13 Ammeter 13 Trip Unit Testing 14 External Power Supply 14 Section 2—Ammeter 15 Display 15 Access Information 15 Current Menu 16 Peak Menu 17 Switch Settings Menu 18 Communication Module Screens 19 Section 3—Operation 20 Adjust Switch Settings 20 Examples 20 MICROLOGIC 3.0A Trip Unit 20 MICROLOGIC 5.0A Trip Unit 21 MICROLOGIC 6.0A Trip Unit 22 Zone-selective Interlocking (ZSI) 23 Set Communication Module values 24 Check Trip Unit Settings 26 Verify Trip Unit Operation 26 Test Equipment Ground-fault Trip Functions 27 Reset Trip Unit After Trip 27 Check Trip Unit Status 27 Section 4—Trip Unit Replacement 28 Disconnect Circuit Breaker 28 Remove Circuit Breaker Accessory Cover 28 Install Battery 28 Replace Trip Unit 28 Replace Circuit Breaker Accessory Cover 28 Test Trip Unit Installation 29 Reconnect Circuit Breaker 29 Section 5—Adjustable Rating Plug Replacement 30 Section 6—Battery Replacement 31 Disconnect Circuit Breaker 31 Remove Circuit Breaker Accessory Cover 31 Shift Circuit Breaker Withstand Module (R-frame and NS1600b–NS3200 Circuit Breakers Only) 31 Replace Battery 31 Replace Circuit Breaker Withstand Module (R-frame and NS1600b–NS3200 Circuit Breakers Only) 32 Table of Contents © 1999–2001 Schneider Electric All Rights Reserved 6 MICROLOGIC ® 3.0A, 5.0A and 6.0A Electronic Trip Units Bulletin No. 48049-136-02 Table of Contents 4/01 English Replace Circuit Breaker Accessory Cover 32 Reconnect Circuit Breaker 32 Appendix A—Register List 33 7 © 1999–2001 Schneider Electric All Rights Reserved Bulletin No. 48049-136-02 MICROLOGIC ® 3.0A, 5.0A and 6.0A Electronic Trip Units 4/01 Section 1—General Information English Figure 1: MICROLOGIC Trip Unit r e s e t A p I g I Ð n I s d I i I r M i c r o l o g i c 7 0 Re s et .4 .5 .6 .7 .8 .9 .95 .98 1 .5 1 2 4 8 12 16 20 24 l o n g t i m e a l a r m Ir tr ( s ) x In @ 6 I r Micrologic 7.0 A 40 100 % % m e n u 06134858 A 06133224 B E C A—MICROLOGIC Trip Unit B—Product Name C—Battery Housing D—Switch Cover E—Switch Cover Opening Slot F—Adjustable Rating Plug D F G H G—Reset Button for Battery Status Check and Trip Indicators H—External Terminal Block Connection 06133249 Section 1—General Information INTRODUCTION MICROLOGIC ® trip units (A) provide adjustable tripping functions on electronic trip circuit breakers. The product name (B) specifies the level of protection provided by the trip unit. MICROLOGIC trip units are field replaceable to allow for upgrading of the trip unit in the field. For complete information on available circuit breaker models, frame sizes, interrupting ratings, sensor plugs, rating plugs and trip units, see the product catalog. COMMUNICATIONS MICROLOGIC trip units can communicate with other devices if the optional Breaker Communication Module (BCM) is installed. For information on the communication module, see the product catalog. TRIP UNIT SETTINGS On the face of the trip unit are adjustable switches to allow changing of the trip characteristics of the trip unit. Trip units are shipped with the long-time pickup switch set at 1.0 and all other trip unit adjustments set at their lowest settings. MICROLOGIC 3.0A Type of protection 3—Basic protection (LI) 5—Selective protection (LSI) 6—Selective protection plus ground fault Trip unit series 0—Indicates the first version Type of measurement None—Provides protection only A—Provides protection plus ammeter measurements protection for equipment (LSIG) © 1999–2001 Schneider Electric All Rights Reserved 8 MICROLOGIC ® 3.0A, 5.0A and 6.0A Electronic Trip Unit Bulletin No. 48049-136-02 Section 1—General Information 4/01 English Figure 2: Settings and Trip Curve for 3.0A Trip Unit Figure 3: Settings and Trip Curve for 5.0A Trip Unit Micrologic 3.0 A menu delay short time tsd instantaneous long time alarm test 800 earth leakage 1 2 3 5 7 10 20 30 ÐI 60 .5 140 230 350 IÐn setting 2.5 3 4 5 6 1.5 2.5 3 4 5 6 1.5 .5 1 2 4 8 12 16 20 tr (s) @ 6 Ir 24 .4 .5 .6 .7 .8 .9 .95 .98 1 Ir x In instantaneous long time alarm .4 .5 .6 .7 .8 .9 .95 .98 1 Ir x In .5 1 2 4 8 12 16 20 tr (s) @ 6 Ir 24 x In 2 3 4 5 6 8 10 121.5 setting Ii 0 Ir Ii I t 06133243 A H I G E J 06133201 G H I M N B C D L F K Micrologic 5.0 A menu delay short time tsd instantaneous long time alarm test 800 earth leakage 1 2 3 5 7 10 20 30 ÐI 60 .5 140 230 350 IÐn setting 2.5 3 4 5 6 1.5 2.5 3 4 5 6 1.5 .5 1 2 4 8 12 16 20 tr (s) @ 6 Ir 24 .4 .5 .6 .7 .8 .9 .95 .98 1 Ir x In .95 .98 setting delay short time I itsd instantaneous long time alarm .4 .5 .6 .7 .8 .9 1 Ir x In .5 1 2 4 8 12 16 20 tr (s) @ 6 Ir 24 x Ir 2 2.5 3 4 5 6 8 10 Isd 1.5 on I 2 t . 2 . 3 . 4 . 4 . 1 . 2 . 3 . 1 0 x In 3 4 6 8 10 12 15 off 2 1 2 3 4 5 0 Ir Isd I t Ii 06133244 A H I G E L 06133202 O P B C D N F M J K G H I J K MICROLOGIC 3.0A Trip Unit The MICROLOGIC 3.0A trip unit provides basic (LI) protection and a built-in ammeter. A—Trip unit name B—Reset button for battery status check and trip indicator LED C—Alphanumeric display D—Ammeter and three-phase bar graph Navigation E—Scroll button F—Menu button Switches G—Long-time pickup (Ir) switch H—Long-time delay (tr) switch I—Instantaneous pickup (Ii) switch Te s t J—Test plug Indicator Lights K—Overload indicator light L—Self-protection indicator light M—Short-time delay or instantaneous trip indicator light N—Long-time delay trip indicator light MICROLOGIC 5.0A Trip Unit The MICROLOGIC 5.0A trip unit provides selective (LSI) protection and a built-in ammeter. A—Trip unit name B—Reset button for battery status check and trip indicator LED C—Alphanumeric display D—Ammeter and three-phase bar graph Navigation E—Scroll button F—Menu button Switches G—Long-time pickup (Ir) switch H—Long-time delay (tr) switch I—Short-time pickup (Isd) switch J—Short-time delay (tsd) switch K—Instantaneous pickup (Ii) switch Te s t L—Test plu g Indicator Lights M—Overload indicator light N—Self-protection indicator light O—Short-time or instantaneous trip indicator light P—Long-time trip indicator light 9 © 1999–2001 Schneider Electric All Rights Reserved Bulletin No. 48049-136-02 MICROLOGIC ® 3.0A, 5.0A and 6.0A Electronic Trip Units 4/01 Section 1—General Information English MICROLOGIC 6.0A Trip Unit The MICROLOGIC 6.0A trip unit provides selec- tive and ground-fault protection for equipment (≤ 1200 A) (LSIG) and a built-in ammeter. A—Trip unit name B—Reset button for battery status check and trip indicator LED C—Alphanumeric display D—Ammeter and three-phase bar graph Navigation E—Scroll button F—Menu button Switches G—Long-time pickup (Ir) switch H—Long-time delay (tr) switch I—Short-time pickup (Isd) switch J—Short-time delay (tsd) switch K—Instantaneous pickup (Ii) switch L—Ground-fault pickup (Ig) switch M—Ground-fault delay (tg) switch Te s t N—Te st plug O—Ground fault push-to-trip button Indicator Lights P—Overload indicator light Q—Self-protection indicator light R—Ground-fault trip indicator light S—Short-time or instantaneous trip indicator light T—Long-time trip indicator light ZONE-SELECTIVE INTERLOCKING Short-time and ground-fault protection can be interlocked to provide zone-selective interlocking. Control wiring links several trip units in the distribution network and in the event of a fault, a trip unit will obey the set delay time only if receiving a signal from a downstream trip unit. If the trip unit does not receive a signal, tripping will be instantaneous (with no intentional delay). The fault is cleared instantaneously by the nearest upstream circuit breaker. Thermal stresses (I 2 t) in the network are minimized without any affect on the correct time delay coordination of the installation. NOTE: Using the I 2 t on functionality in a ZSI protection scheme is not recommended. It is possible, due to the delay in the upstream device receiving a restraint signal, that the trip unit could trip in a time shorter than the published trip curve. The I 2 t off functionality will coordinate properly in a ZSI system. Figure 4: Settings and Trip Curves for 6.0A Trip Unit Micrologic 6.0 A menu delay short time tsd instantaneous long time alarm test 800 earth leakage 1 2 3 5 7 10 20 30 ÐI 60 .5 140 230 350 IÐn setting 2.5 3 4 5 6 1.5 2.5 3 4 5 6 1.5 .5 1 2 4 8 12 16 20 tr (s) @ 6 Ir 24 .4 .5 .6 .7 .8 .9 .95 .98 1 Ir x In .4 .5 .6 .7 .8 .9 .95 .98 1 delay short time I itsd (s) on I 2 t . 2 . 3 . 4 . 4 . 1 . 2 . 3 . 1 0 off instantaneous long time alarm Ir x In ground fault B C D E F G H J Ig tg (s) on I 2 t . 2 . 3 . 4 . 4 . 1 . 2 . 3 . 1 0 off A .5 1 2 4 8 12 16 20 tr (s) @ 6 Ir 24 setting x Ir 2 2.5 3 4 5 6 8 10 Isd 1.5 x In 3 4 6 8 10 12 15 off 2 test 1 2 3 4 5 0 Ir Isd I t Ii 06133245 A H I G N 06133202 Q RS T B C D P E O L K J F M G H I J K 0 I t 1 2 I 2 t off I 2 t on Ig L M 06133247 © 1999–2001 Schneider Electric All Rights Reserved 10 MICROLOGIC ® 3.0A, 5.0A and 6.0A Electronic Trip Unit Bulletin No. 48049-136-02 Section 1—General Information 4/01 English Figure 5 shows circuit breakers 1 and 2 zone- selective interlocked. A fault at A is seen by circuit breakers 1 and 2. Circuit breaker 2 trips instantaneously and also informs circuit breaker 1 to obey set delay times. Thus, circuit breaker 2 trips and clears the fault. Circuit breaker 1 does not trip. A fault at B is seen by circuit breaker 1. Circuit breaker 1 trips instantaneously since it did not receive a signal from the downstream circuit breaker 2. Circuit breaker 1 trips and clears the fault. Circuit breaker 2 does not trip. NOTE: Setting short-time delay (tsd) or ground- fault delay (tg) to the 0 setting will eliminate selectivity for that circuit breaker. TRIP UNIT SWITCHES Long-time Protection Long-time protection protects equipment against overloads. Long-time protection is standard on all trip units. The long-time pickup (Ir) (A) sets maximum current level (based on sensor plug rating In) which circuit breaker will carry continuously. If current exceeds this value, circuit breaker will trip after the preset time delay. The long-time pickup (Ir) is adjustable from 0.4–1.0 times the sensor plug rating (In). The long-time delay (tr) (B) sets the length of time that the circuit breaker will carry an overcurrent below the short-time or instantaneous pickup current level before tripping. See Table 1 for long-time delay settings. Both long-time pickup and long-time delay are on the field-replaceable adjustable rating plug. To change settings to more precisely match the application, various rating plugs are available. For instructions on replacing the rating plug, see Section 4—Adjustable Rating Plug Replacement. For MASTERPACT ® NT and NW circuit breakers, the In value can be changed by replacing the sensor plug below the trip unit. For further information, see the instructions packed with the sensor plug replacement kit. The overload indicator light (C) indicates that the Ir long-time pickup threshold has been exceeded. Long-time protection uses true RMS measurement. Thermal imaging provides continuous temperature rise status of the wiring, both before Figure 5: Zone-selective Interlocking Figure 6: Long-time Protection Switches Table 1: MICROLOGIC Trip Unit Long-time Delay Values Setting Long-time Delay in Seconds tr at 1.5 x Ir 12.5 25 50 100 200 300 400 500 600 tr at 6 xIr 0.5124812162024 tr at 7.2 xIr 0.34 0.69 1.38 2.7 5.5 8.3 11 13.8 16.6 In = sensor rating. Ir = In x long-time pickup. Trip threshold between 1.05 and 1.20 Ir. Time-delay accuracy +0/-20%. 06133376 1 B 2 A .4 .5 .6 .7 .8 .9 .95 .98 1 delay short time I itsd (s) on I 2 t .2 .3 .4 .4 .1 .2 .3 .1 0 off instantaneous long time alarm Ir x In .5 1 2 4 8 12 16 20 tr (s) @ 6 Ir 24 setting x Ir 2 2.5 3 4 5 6 8 10 Isd 1.5 x In 3 4 6 8 10 12 15 off 2 x In 2 3 4 5 6 8 10 12 1.5 setting Ii instantaneous long time alarm tr (s) .4 .5 .6 .7 .8 .9 .95 .98 1 Ir x In .5 1 2 4 8 12 16 20 @ 6 Ir 24 .4 .5 .6 .7 .8 .9 .95 .98 1 delay short time I itsd (s) on I 2 t . 2 . 3 . 4 . 4 . 1 . 2 . 3 . 1 0 off instantaneous long time alarm Ir x In ground fault B C D E F G H J Ig tg (s) on I 2 t . 2 . 3 . 4 . 4 . 1 . 2 . 3 . 1 0 off A .5 1 2 4 8 12 16 20 tr (s) @ 6 Ir 24 setting x Ir 2 2.5 3 4 5 6 8 10 Isd 1.5 x In 3 4 6 8 10 12 15 off 2 test 06133203 06133204 MICROLOGIC 3.0A Trip Unit MICROLOGIC 5.0A Trip Unit MICROLOGIC 6.0A Trip Unit 06133351 C A B C A B C A B 11 © 1999–2001 Schneider Electric All Rights Reserved Bulletin No. 48049-136-02 MICROLOGIC ® 3.0A, 5.0A and 6.0A Electronic Trip Units 4/01 Section 1—General Information English and after the device trips. This allows the circuit breaker to respond to a series of overload conditions which could cause conductor overheating, but would go undetected if the long- time circuit was cleared every time the load dropped below the pickup setting or after every tripping event. NOTE: If checking trip times, wait a minimum of 15 minutes after circuit breaker trips before resetting to allow the thermal imaging to reset completely to zero or use a test kit to defeat the thermal imaging. Short-time Protection Short-time protection protects equipment against short circuits. Short-time protection is standard on 5.0A and 6.0A trip units. It is not available on 3.0A trip units. The short-time pickup (Isd) (A) sets current level (below instantaneous trip level) at which circuit breaker will trip after the preset time delay. The short-time delay (tsd) (B) sets the length of time that the circuit breaker will carry an overcurrent above the short-time pickup current level before tripping. The I 2 t on/I 2 t off option provides improved selectivity with downstream protective devices: – With I 2 t off selected, fixed time delay is provided. – With I 2 t on selected, inverse time I 2 t protection is provided up to 10 x Ir. Above 10 x Ir, fixed time delay is provided. Intermittent currents in the short-time tripping range which do not last sufficiently long to trigger a trip are accumulated and shorten the trip delay appropriately. Short-time protection can be zone-selective interlocked (ZSI) with upstream or downstream circuit breakers. Setting tsd to the 0 setting turns off zone- selective interlocking. Short-time protection uses true RMS measurement. Short-time pickup and delay can be adjusted to provide selectivity with upstream or downstream circuit breakers. NOTE: Using the I 2 t on functionality in a zone selective interlocking (ZSI) scheme is not recommended. It is possible, due to the delay in the upstream device receiving a restraint signal, that the trip unit could trip in a time shorter than the published trip curve. The I 2 t off functionality will coordinate properly in a ZSI system. Figure 7: Short-time Protection Switches Table 2: MICROLOGIC Trip Unit Short-time Delay Values Setting Short-time Delay I 2 t off (ms at 10 Ir) (seconds) 0 0.1 0.2 0.3 0.4 I 2 t on (ms at 10 Ir) (seconds) 0.1 0.2 0.3 0.4 tsd (min. trip) (milliseconds) 20 80 140 230 350 tsd (max. trip) (milliseconds) 80 140 200 320 500 .4 .5 .6 .7 .8 .9 .95 .98 1 delay short time I itsd (s) on I 2 t .2 .3 .4 .4 .1 .2 .3 .1 0 off instantaneous long time alarm Ir x In .5 1 2 4 8 12 16 20 tr (s) @ 6 Ir 24 setting x Ir 2 2.5 3 4 5 6 8 10 Isd 1.5 x In 3 4 6 8 10 12 15 off 2 .4 .5 .6 .7 .8 .9 .95 .98 1 delay short time I itsd (s) on I 2 t .2 .3 .4 .4 .1 .2 .3 .1 0 off instantaneous long time alarm Ir x In ground fault B C D E F G H J Ig tg (s) on I 2 t .2 .3 .4 .4 .1 .2 .3 .1 0 off A .5 1 2 4 8 12 16 20 tr (s) @ 6 Ir 24 setting x Ir 2 2.5 3 4 5 6 8 10 Isd 1.5 x In 3 4 6 8 10 12 15 off 2 test 06133204 A B MICROLOGIC 5.0A MICROLOGIC 6.0A 06133351 A B Trip Unit Trip Unit © 1999–2001 Schneider Electric All Rights Reserved 12 MICROLOGIC ® 3.0A, 5.0A and 6.0A Electronic Trip Unit Bulletin No. 48049-136-02 Section 1—General Information 4/01 English Instantaneous Protection Instantaneous protection protects equipment against short circuits with no intentional time delay. Instantaneous protection (Ii) (A) is standard on all trip units. Instantaneous protection is based on the circuit breaker sensor rating (In). Circuit breaker open command is issued as soon as threshold current is exceeded. Instantaneous protection uses peak current measurement. When instantaneous protection switch is set to off, the instantaneous protection is disabled. Ground-fault Protection for Equipment Equipment ground-fault protection protects conductors against overheating and faults from ground-fault currents (≤ 1200 A). Equipment ground-fault protection is standard on 6.0A trip units. Ground-fault pickup (Ig) (A) sets ground current level where circuit breaker will trip after the preset time delay. Ground-fault delay (tg) (B) sets the length of time that the circuit breaker will carry a ground- fault current above the ground-fault pickup current level before tripping. Equipment ground-fault protection can be zone- selective interlocked (ZSI) with upstream or downstream circuit breakers. Setting the ground-fault delay (tg) to the 0 setting turns off zone-selective interlocking. Neutral protection and equipment ground-fault protection are independent and can operate concurrently. NOTE: Using the I 2 t on functionality in a zone selective interlocking (ZSI) scheme is not recommended. It is possible, due to the delay in the upstream device receiving a restraint signal, that the trip unit could trip in a time shorter than the published trip curve. The I 2 t off functionality will coordinate properly in a ZSI system. Figure 8: Instantaneous Protection Switches Table 3: MICROLOGIC Trip Unit Instantaneous Values Setting Trip Unit Type Interruption Current Ii (= In x ) 3.0A 1.52345681012 Ii (= In x ) 5.0A and 6.0A 23468101215OFF Ii = instantaneous pickup. In = sensor rating. Ir = long-time delay pickup. Figure 9: Ground-fault Protection Switches Table 4: MICROLOGIC Trip Unit Ground-fault Pickup Values Ig (= In x ) A B C D E F G H J In ≤ 400 A 0.3 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 400 A < In ≤ 1200 A 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 In > 1200 A 500 A 640 A 720 A 800 A 880 A 960 A 1040 A 1120 A 1200 A In = sensor rating. Ig = ground-fault pickup. Table 5: MICROLOGIC Trip Unit Ground-fault Delay Values Setting Ground-fault Delay I 2 t off time delay at 10 Ir (seconds) 0 0.1 0.2 0.3 0.4 I 2 t on time delay at 10 Ir (seconds) 0.1 0.2 0.3 0.4 tg (min. trip) (milliseconds) 20 80 140 230 350 tg (max. trip) (milliseconds) 80 140 200 320 500 .4 .5 .6 .7 .8 .9 .95 .98 1 delay short time I itsd (s) on I 2 t .2 .3 .4 .4 .1 .2 .3 .1 0 off instantaneous long time alarm Ir x In .5 1 2 4 8 12 16 20 tr (s) @ 6 Ir 24 setting x Ir 2 2.5 3 4 5 6 8 10 Isd 1.5 x In 3 4 6 8 10 12 15 off 2 x In 2 3 4 5 6 8 10 12 1.5 setting Ii instantaneous long time alarm tr (s) .4 .5 .6 .7 .8 .9 .95 .98 1 Ir x In .5 1 2 4 8 12 16 20 @ 6 Ir 24 .4 .5 .6 .7 .8 .9 .95 .98 1 delay short time I itsd (s) on I 2 t .2 .3 .4 .4 .1 .2 .3 .1 0 off instantaneous long time alarm Ir x In ground fault B C D E F G H J Ig tg (s) on I 2 t .2 .3 .4 .4 .1 .2 .3 .1 0 off A .5 1 2 4 8 12 16 20 tr (s) @ 6 Ir 24 setting x Ir 2 2.5 3 4 5 6 8 10 Isd 1.5 x In 3 4 6 8 10 12 15 off 2 test 06133203 06133204 A A MICROLOGIC 3.0A MICROLOGIC 5.0A MICROLOGIC 6.0A 06133351 A Trip Unit Trip Unit Trip Unit .4 .5 .6 .7 .8 .9 .95 .98 1 delay short time I itsd (s) on I 2 t . 2 . 3 . 4 . 4 . 1 . 2 . 3 . 1 0 off instantaneous long time alarm Ir x In ground fault B C D E F G H J Ig tg (s) on I 2 t . 2 . 3 . 4 . 4 . 1 . 2 . 3 . 1 0 off A .5 1 2 4 8 12 16 20 tr (s) @ 6 Ir 24 setting x Ir 2 2.5 3 4 5 6 8 10 Isd 1.5 x In 3 4 6 8 10 12 15 off 2 test MICROLOGIC 6.0A Trip Unit 06133351 A B [...]... Reserved MICROLOGIC® 3.0A, 5.0A and 6.0A Electronic Trip Units Section 3—Operation Bulletin No 48049-136-02 4/01 Square D GC-100 Ground-fault Relay for Equipment Protection Square D GC-200 Ground-fault Relay for Equipment Protection Merlin Gerin STR58 Trip Units Federal Pioneer USRC and USRCM Trip Units ZSI Combinations Square D MICROLOGIC Series B Trip Units Table 6: MICROLOGIC #.0x Trip Units The... Table 6 MICROLOGIC #.0x Trip Units 15 R R 15 15 R Square D MICROLOGIC Series B Trip Units R 26 R R R 15 Square D GC-100 Ground-fault Relay for Equipment Protection R R 7 R R R Square D GC-200 Ground-fault Relay for Equipment Protection 15 R R 15 15 R Merlin Gerin STR58 Trip Units 15 R R 15 15 R Merlin Gerin STR53 Trip Units 15 R R 15 15 R Federal Pioneer USRC and USRCM Trip Units R 15 R R R 15 Square... breaker 28 C B A 7 lb-in (0.8 N·m) Figure 43: Install Replacement Trip Unit © 1999–2001 Schneider Electric All Rights Reserved MICROLOGIC® 3.0A, 5.0A and 6.0A Electronic Trip Units Section 4 Trip Unit Replacement Bulletin No 48049-136-02 4/01 3 If circuit breaker does not trip, check all trip unit connections If circuit breaker still does not trip, contact the local sales office .7 6 5 4 8 x In tr 8 (s)... TRIP UNIT AFTER TRIP Micrologic 6.0 A A Press and hold the reset/test button (A) for three seconds to reset the trip unit after trip Do not return circuit breaker to service until cause of trip is determined For more information, refer to the circuit breaker installation instructions shipped with the circuit breaker Figure 39: Reset Trip Unit After Trip To check trip unit battery and trip indicators,... setting menu to check the trip unit settings A Figure 37: Verify Trip Unit Operation 26 © 1999–2001 Schneider Electric All Rights Reserved MICROLOGIC® 3.0A, 5.0A and 6.0A Electronic Trip Units Section 3—Operation Bulletin No 48049-136-02 4/01 English gic 2.0 Microlo Microl ogic 7.0 A 06133205 With the circuit breaker closed, test the groundfault (MICROLOGIC 6.0A trip unit) trip functions For instructions... cardboard box the trip unit is shipped in 06133375 INSTALL BATTERY 100 % Install battery housing cover (A) in trip unit A 40 % Figure 41: Install Battery REPLACE TRIP UNIT 1 Record trip unit settings A 06134854 2 Remove connector block (A) from top of trip unit, if present 06134853 3 Loosen two trip unit screws (B) 4 Slide out trip unit (C) 5 If trip unit being replaced is a MICROLOGIC 3.0 or 5.0 trip unit,... DAMAGE Trip unit and communication module must use separate power supplies 24 Vdc Failure to observe this instruction can result in personal injury or equipment damage © 1999–2001 Schneider Electric All Rights Reserved MICROLOGIC® 3.0A, 5.0A and 6.0A Electronic Trip Units Section 2—Ammeter Bulletin No 48049-136-02 4/01 English Section 2—Ammeter NOTE: The ammeter display will function only if the trip. .. Schneider Electric All Rights Reserved 31 MICROLOGIC® 3.0A, 5.0A and 6.0A Electronic Trip Unit Section 6—Battery Replacement 4 Replace battery housing cover (C) + B 100 % A 40 % C Figure 51: Replace Battery REPLACE CIRCUIT BREAKER WITHSTAND MODULE (R-FRAME AND NS1600b–NS3200 CIRCUIT BREAKERS ONLY) Replace withstand module (A) Tighten screws (B) securing withstand module 06123146 English 3 Insert new... Reserved Figure 40: Check Trip Unit Status 27 MICROLOGIC® 3.0A, 5.0A and 6.0A Electronic Trip Unit Section 4 Trip Unit Replacement Bulletin No 48049-136-02 4/01 DANGER DISCONNECT CIRCUIT BREAKER HAZARD OF ELECTRIC SHOCK, BURN, OR EXPLOSION Disconnect circuit breaker as directed in the circuit breaker instruction bulletin shipped with the circuit breaker • This equipment must be installed and serviced only... complete setup © 1999–2001 Schneider Electric All Rights Reserved Figure 36: Setting Communication Module Addresses 25 MICROLOGIC® 3.0A, 5.0A and 6.0A Electronic Trip Unit Section 3—Operation Bulletin No 48049-136-02 4/01 CHECK TRIP UNIT SETTINGS Table 7: Trip Unit Settings Setting Window 3.0A 5.0A 6.0A X X X X X X X X X X X X 1 Press “menu” button twice 2 Switch settings menu will appear Ir Long-time pickup . A Max menu 40 100 % % A Max 40 100 % % A Max menu 40 100 % % A Max 06 133 355 06 133 355 06 133 347 06 133 3 56 06 133 349 A Peak A- phase Current (IpA) E Peak Neutral Current (Ipn) B—Peak. A menu 40 100 % % A menu 40 100 % % A menu 40 100 % % A menu 40 100 % % A menu 40 100 % % A 06 133 354 06 133 3 56 06 133 3 43 06 133 3 56 06 133 3 45 A A Phase