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40752-195 (1)

Effective

/201

Figure 5-2 Connection Diagrams Ground Fault Breaker - Figure indicates normal feed installation. Neutral sensor is wired identi-

cally for reverse feed applications.

Figure 5-1 Neutral Sensor Outline

Polarity

Markings

2.188

(55.58)

2.75

(69.85)

M12-1.75 Tapped Holes

4-Places

3.12 (79.25)

1.69 (42.93)

5.80

(147.32)

4.375

(111.13)

.59

(14.98)

2.75 (69.85)

1.062 (26.97)

.50 (12.7)

White
Grey

Содержание Allen-Bradley 140U

Страница 1: ...ac cordance with Underwriters Laboratories Inc Standard UL 489 and satisfy the requirements of the International Electrotechnical Commission Recommendations No IEC 60947 2 The Trip Units are AC only d...

Страница 2: ...r the cabling to cool off Short delay Instantaneous Trip For short circuit con ditions that exceed the short delay pick up settings the trip units initiate a trip after a delay prescribed by the I t r...

Страница 3: ...Shunt Trip Undervoltage Release Mechanism Handle Reset 40752 096 Note Shunt trip and undervoltage accessories if re quired must be mounted in the left pole Note Trip unit versions with ground fault pr...

Страница 4: ...h existing equipment ratings and system requirements Inspect the circuit breaker for completeness and check for damage before mounting 2 2 Accessory Installation Note If required internal accessory in...

Страница 5: ...it Breaker Escutcheon Dimensions CIRCUIT BREAKER COVER CONSTRAINTS MOVING PARTS DO NOT OPERATE THE BREAKER WITHOUT THE COVER INSTALLED CAUTION C Handle L 3 438 87 31 C L Breaker 2 50 R 6 35 R 1 718 43...

Страница 6: ...ground fault protection connect the neutral current sensor and ground fault alarm unit as HAZARDOUS VOLTAGE CONDITIONS CAN CAUSE DEATH OR SEVERE PERSONAL INJURY MAINTAIN ORIGINAL ELECTRICAL CLEARANCE...

Страница 7: ...s the circuit breaker tripping function and may be used to periodically exercise the operating mechanism Figure 3 1 Circuit Breaker Manual Controls 16 000 OVER ALL LENGTH 8 625 14 750 OF MTG HOLES 3 8...

Страница 8: ...me will be shorter 4 5 Isd Setting in multiples of IR For short circuit conditions that exceed the short delay pick up setting the trip unit initiates a trip after a predetermined delay 4 6 The Ig xIn...

Страница 9: ...he two lowest settings of the INST switch 2 5x and 4 0x For example a 1200A In NG breaker with the switch set to 2 5x would trip instantaneously when the current exceeded 3000A 4 13 The adjustable INS...

Страница 10: ...a period of 38 seconds If the current drops below the 95 value the contact will open The yellow and green wires that exit the right side of the breaker are the common C and nor mally NO of this relay...

Страница 11: ...es normal feed installation Neutral sensor is wired identi cally for reverse feed applications Figure 5 1 Neutral Sensor Outline Polarity Markings 2 188 55 58 2 75 69 85 M12 1 75 Tapped Holes 4 Places...

Страница 12: ...ARE SUITABLE FOR THE JOB 6 1 Remove dust dirt soil grease or moisture from the surface of the circuit breaker using a lint free dry cloth brush or vacuum cleaner Do not blow debris into the cir cuit...

Страница 13: ...neutral current passing current through the neutral sensor only will not properly test the ground fault feature 7 3 4 Using a low voltage 0 24V high current AC source apply a test current of 125 of th...

Страница 14: ...Test with a Four Wire System Figure 7 1c Connections for Ground Fault No Trip Test with a Three Wire System Source Low Voltage Source L C R N Load Current Limiting Resistor if required Source Low Volt...

Страница 15: ...15 40752 195 1 Effective 2 2011 NOTES...

Страница 16: ...over all contingencies should be consulted THERE ARE NO UNDERSTANDINGS AGREEMENTS WARRANTIES EXPRESSED OR IMPLIED INCLUDING WARRANTIES OF FITNESS FOR A PARTICULAR PUR POSE OR MECHANTABILITY OTHER THAN...

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