For example, if a relay is programmed for the long-time pickup r, the trip unit will not signal an alarm when the long-time overload indicator lights. Protects the circuit when two of the three phases are reversed. Circuit breaker 2 trips instantaneously and also informs circuit breaker 1 to obey set delay times. Equipment ground-fault protection is standard on 6. Nous n’encourageons pas l’utilisation de ce logiciel s’il est en violation avec l’une de ces lois. Vous venez d acheter un kit de connexion Urban Factory pour Microsoft Surface, et nous vous.
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Provides additional information to clarify or simplify a procedure. Default display shows current levels. The cabled sensor includes the humidity and temperature sensors as well as the wind. For complete information on available circuit breaker models, frame sizes, interrupting ratings, sensor plugs, rating plugs and trip units, see the product catalog. 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.
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. The addition of either symbol to a Danger or Warning safety label indicates that an electrical hazard univfrsal which will result in personal injury if the instructions are not followed. This is the safety alert symbol.
Obey all safety messages that follow this symbol to avoid possible injury or death. Provides additional information to clarify or simplify a procedure. Please Note FCC Notice Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel. No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material.
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 designated 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 Schneider Electric All Rights Reserved.
Schneider Electric All Rights Reserved 7. The product name specifies the level of protection provided by the trip unit.
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For complete information on available circuit breaker models, frame sizes, interrupting ratings, sensor plugs, 1.9.6. plugs and trip units, see the product catalog. Using the graphic display screen and keypad on the trip unit, trip unit options can be set or system measurements checked.
See Section 2 Graphic Display Navigation for more information. On the face of the trip univetsal are adjustable switches to allow changing of the LS or LSG trip characteristics of the trip unit. Trip units are shipped with the long-time pickup switch set at 1. All advanced protection settings are turned off. Fine switch adjustments can be made with the navigation keys. Graphic display screen B. Long-time pickup r switch.
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Long-time delay tr switch J. Short-time pickup sd switch K. Short-time delay tsd switch L.
Test plug receptacle N. Long-time pickup overload indicator light O. Reset button for battery status check and trip indicator LED P. Self-protection and advanced-protection indicator light Q. Short-time or instantaneous trip indicator light R. Long-time trip indicator light The Micrologic 5. Ground-fault usn pickup g switch N.
Ground-fault protection delay tg switch O. Test plug receptacle P. Ground-fault push-to-trip button Q. Long-time pickup overload indicator light R.
Reset button for battery status check and trip indicator LED S. Self-protection and advanced-protection indicator light T. Ground-fault trip indicator light U. Short-time or instantaneous trip indicator light V. Long-time trip indicator light The Micrologic 6. Long-time protection is standard on all trip units.
Long-time pickup r sets the maximum current level based on sensor plug rating n which the circuit breaker will carry continuously. The long-time pickup r is adjustable from times the circuit breaker sensor plug rating n D. 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.
Two options are available: Standard 2 insstaller long-time delay curve. See Table 1 for 2 t long-time delay settings. Micrologic trip units are powered from the circuit to uniiversal provide fault protection. All other functions display, metering, communications, etc. See page 17 for more information. D sd Table 1: Trip threshold between 1.
For Masterpact NT and NW circuit breakers, sensor value n can be changed by replacing sensor plug D located below the trip unit. For further information, see the instructions universap with the sensor plug replacement kit. Neutral protection is not available when dmtl protection is selected Schneider Unievrsal All Rights Reserved. Both the basic long-time protection and dmtl ET are 2 t curves, but the different thermal imaging features result in different system performances.
For welding applications it is recommended the basic 2 t long-time protection be used to ensure expected system performance. Both long-time pickup and long-time delay are located on the field-replaceable adjustable rating plug. To change settings to more precisely match the application, various rating plugs are available. Long-time protection uses true RMS measurement. Thermal imaging provides continuous temperature rise status of the wiring, both before and after the device trips.
This allows the circuit breaker to respond to a series of univresal 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.
Short-time protection is standard on 5. The short-time pickup sd 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.
With 2 t off selected, fixed time delay is provided. With 2 t on selected, inverse time 2 t protection is provided up to 10 x r. Above 10 x r, fixed time delay is provided. Short-time protection can be zone-selective interlocked ZS with upstream or downstream circuit breakers. Setting tsd to the 0 setting turns off zone-selective interlocking.
Short-time protection uses true RMS measurement. Unigersal pickup and delay can be adjusted to provide selectivity with upstream or downstream circuit breakers. Use 2 t off with ZS for proper coordination. Using 2 t on with ZS is not recommended as the delay in the upstream device receiving a restraint signal could result in the trip unit tripping in a time shorter than the published trip curve.
A B Table 3: Circuit breaker open command is issued as soon as threshold current is exceeded. When instantaneous protection switch is set to off, the instantaneous protection is disabled. Setting long time r x n short time tr s tsd s on 2 0 t off delay nstantaneous Protection Switches r 24 alarm instantaneous i off x n A Micrologic nstantaneous Values nterruption Current Micrologic 6. Equipment ground-fault protection is standard on 6.
Ground-fault pickup g sets ground current level where circuit breaker will trip after univfrsal 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 ZS 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 groundfault protection are independent and can operate concurrently.
A B Table 5: The large LCD display used by the P trip unit requires too much current to be powered by current flow through the circuit breaker. The P trip unit has a circuit voltage power supply which will power the trip unit when there is approximately Vac or more between two phases.
The standard configuration for the voltage probes inside the circuit breaker is at the bottom connections. The following will be powered and functional even if the trip unit is not externally powered: Fault protection for LSG functions.
The P trip unit is fully circuit powered for fault protection. LED trip indication installr by an onboard battery. The battery s only function is to provide LED indication if all other power is off. Ground-fault push-to-trip button works for testing ground fault when the trip unit is powered by the circuit voltage power supply. The following will be powered and functional with external power: All of the above functions which are functional without external power.
LCD display and backlight are functional. Backlight intensity is not controlled or adjustable, and may be different from one trip unit to another.