GEH–6285C g ® Power Break II Circuit Breaker Accessories Undervoltage Release Catalog Voltage Peak Inrush Nominal RMS Introduction ❡ ❿ Number Rating Current, A Current, mA The Undervoltage Release (UVR) accessory, shown in Figure SPUV012DC 12 Vdc 19 300 1, can be installed in 800–4000 ampere frame Power Break® SPUV024DC 24 Vdc 15 140 II circuit breakers. This accessory trips the circuit breaker when SPUV048DC 48 Vdc 7.5 70 the input control voltage drops to 35–60% of its rated value and prevents an open breaker from closing until the input SPUV125DC 125 Vdc 3 30 control voltage is greater than 80% of the rated value. SPUV250DC 250 Vdc 1.5 15 In addition to providing a trip signal to the breaker, the UVR SPUV024AC 24 Vac 15 370 accessory can be set up to interact with other Power Break II SPUV048AC 48 Vac 7.5 210 accessories, when used with a MicroVersaTrip Plus™ o r SPUV120AC 120 Vac 3 80 MicroVersaTrip PM™ Trip Unit. DIP switches on the rear of the breaker Trip Unit can configure the UVR accessory to SPUV208AC 208 Vac 1.9 60 activate a Bell Alarm–Alarm Only accessory or a Bell Alarm SPUV240AC 240 Vac 1.5 45 with Lockout accessory when a UVR trip occurs. The Accessory ❿ 24–240 Vac devices are rated for 50/60 Hz. Configuration section below describes how this can be done. If ❡ Peak inrush current is present for 2–6 ms after activation. This the breaker is equipped with a Power+™ Trip Unit, it is number is provided so that fuses and supplies can be chosen configured so that only protection trips will activate a Bell appropriately. Alarm–Alarm Only or Bell Alarm with Lockout. Table 1. Catalog numbers and voltages for the Undervoltage Release. The catalog numbers for the UVR for various voltage applications are listed in Table 1. Installation WARNING: Before installing any accessories, turn the breaker OFF, disconnect it from all voltage sources, and discharge the charging springs. AVERTISSEMENT: Avant d’installer toute accessoire, mettre le disjoncteur en position OFF, le déconnecter de toute tension d’alimentation, et décharger les ressorts d’armement. The Undervoltage Release is installed in the accessory compartment through the front of the circuit breaker in the position shown in Figure 2. Figure 1. Undervoltage Release. Operation Apply control voltage to terminals 29 and 30 of the ter minal strip on the right side of the breaker. When the applied control voltage is above 80% of the UVR’s rated value, the breaker can be closed. When the voltage drops to 35–60% of the rated value, the UVR will trip the breaker. Figure 2. Accessory compartment on front of circuit breaker, with Undervoltage Release slot indicated. Use the following procedure to install the UVR accessory into Unit. If the breaker is equipped with a Power+ Trip Unit, the the UVR slot in the accessory compartment of the circuit factory default settings, listed in Table 2, can not be changed. breaker: The UVR accessory can be configured to activate the Bell 1. Open the hinged door over the accessory compartment and Alarm–Alarm Only or Bell Alarm with Lockout accessories if a Trip Unit. UVR trip occurs. The configuration can be changed by removing the Trip Unit from the breaker, setting the DIP switches on the 2. To remove an existing accessory module, loosen the rear of the Trip Unit, and reinstalling the Trip Unit. Figure 4 accessory locking screw and pull the module out with the illustrates the Trip Unit read DIP switches and their functions. Rating Plug Removal Tool (catalog number TRTOOL). Table 2 lists the switch functions and the factory settings for 3. Insert the UVR accessory into t h e proper slot, as each. illustrated in Figure 3. The UVR accessory is keyed for the correct slot in the accessory compartment. If the accessory cannot be fully seated in the compartment, check that the compartment position is correct. Figure 4. Accessory switch on the rear of the MicroVersaTrip Plus™ or MicroVersaTrip PM™ Trip Unit, showing the factory settings (solid part indicates that the switch is pushed in on that side). Factory Switch Setting Function Figure 3. Inserting the Undervoltage Release into the accessory Shunt trip activates Bell Alarm–Alarm 1 Disabled compartment. Only 4. Tighten the locking screw on the front of the accessory UVR trip activates Bell Alarm–Alarm 2 Disabled until it is snug (torque of 9 in-lb.) Only Protection trip activates Bell 3 Enabled CAUTION: Overtightening the locking screw may damage o r Alarm–Alarm Only distort the case of the accessory. Shunt trip activates Bell Alarm with 4 Disabled Lockout ATTENTION: Le serrage excessif de la vis de verrouillage UVR trip activates Bell Alarm with 5 Disabled peut déformer le boîtier d’accessoire. Lockout Protection trip activates Bell Alarm 5. If the breaker is equipped with a MicroVersaTrip Plus o r 6 Enabled with Lockout MicroVersaTrip PM Trip Unit, the UVR accessory can be Table 2. Accessory switch settings, including the factory defaults. configured to activate installed Bell Alarm–Alarm Only o r Bell Alarm with Lockout accessories when a UVR trip occurs, with the procedure described in the Accessory Configuration section. 6. Connect the control wiring for the UVR to terminals 29 and 30 at the terminal block on the right side of the breaker. 7. T e st the UVR to ensure proper operation, according to the procedures below. 8. Reconnect power to the circuit breaker and any other accessories. 9. Close and lock or seal the door over the accessory compartment and Trip Unit to prevent unauthorized changes to Trip Unit settings and to keep contaminants out of empty accessory slots. Accessory Configuration This section only applies if Bell Alarm–Alarm Only or Bell Alarm with Lockout accessories are installed in the breaker, along with a MicroVersaTrip Plus or MicroVersaTrip PM Trip 7. Pull the Trip Unit locking lever to the right. While Description of Switch Settings holding the lever, carefully align the connector on the rear Following are descriptions of the effects of each accessory switch of the Trip Unit with the connector in the breaker. Press when it is enabled: down on the Trip Unit, while holding it near the battery 1. When a Shunt Trip accessory causes the breaker to trip, cover. When the Trip Unit is fully seated, slide the locking the contacts of the Bell Alarm–Alarm Only also change lever back to the left. state. (The factory switch setting is disabled.) 8. Reinstall the breaker top cover and tighten the four #10- 2. When an Undervoltage Release accessory causes the 32 screws to 32 in-lbs. breaker to trip, the contacts of the Bell Alarm–Alarm Only 9. Replace the trim plate and tighten the four #8-32 screws also change state. (The factory switch setting is disabled.) to 20 in-lbs. 3. When a protection trip (long-time, short-time, 10. Verify that the switch settings are correct by inducing instantaneous, ground-fault, or protective-relay) occurs, breaker trips from the UVR and Shunt Trip or Shunt Trip the contacts of the Bell Alarm–Alarm Only also change with Lockout (if present) and checking the responses of state. (The factory switch setting is enabled.) the Bell Alarm–Alarm Only and Bell Alarm with Lockout 4. When a Shunt Trip accessory causes the breaker to trip, accessories. the contacts of the Bell Alarm with Lockout also change state. (The factory switch setting is disabled.) Test Procedure 5. When an Undervoltage Release accessory causes the breaker to trip, the contacts of the Bell Alarm with Use the following procedure to test the UVR for proper Lockout also change state. (The factory switch setting is operation. disabled.) 1. Open the breaker. 6. When a protection trip (long-time, short-time, 2. Turn off the power to the UVR. instantaneous, ground-fault, or protective-relay) occurs, 3. Try to manually close the breaker; the breaker should not the contacts of the Bell Alarm with Lockout also change close. state. (The factory switch setting is enabled.) 4. Apply at least 80% of the rated voltage specified on the UVR name plate to the UVR control inputs. Procedure for Changing Switch Settings 5. Try to close the breaker; it should close as normal. Change the accessory switch settings with the following 6. If a MicroVersaTrip Plus or MicroVersaTrip PM Trip procedure: Unit is installed, check that the Trip Unit display is active (powered). WARNING: Before beginning this procedure, turn the breaker off, disconnect it from all voltage sources, and discharge the 7. With the breaker closed, reduce the UVR control voltage to closing springs. 35–60% of the rated voltage; the breaker should trip within 0.5 second. AVERTISSEMENT: Avant de commencer cette procédure, 8. If a Bell Alarm–Alarm Only or Bell Alarm with Lockout is mettre le disjoncteur en position OFF, le déconnecter de toute present, ensure that they activate (or do not activate) as tension d’alimentation, et désarmer les ressorts de fermeture. selected by the MicroVersaTrip Plus or MicroVersaTrip PM Trip Unit DIP switches. 1. Loosen the four #8-32 screws on the breaker trim-plate assembly and remove the trim plate. 2. Loosen the four #10-32 screws at the corner of the breaker Trouble-Shooting cover. Remove the cover from t he breaker face. The following guide is provided for trouble-shooting and 3. Pull the Trip Unit locking lever to the right, then hold the isolating common problems. It does not c over every possible Trip Unit near the battery cover and lift it straight out of situation. Contact the ED&C Customer Support Center at 800- the breaker. 843-3742 if any problem is not resolved by these procedures. 4. Refer to Figure 4 and Table 2 to determine the switches to be changed. 5. Push in the appropriate “Enable” or “Disable” side of the switch. 6. Confirm all switch settings before reinstalling the Trip Unit in the breaker. Symptom Possible Cause Corrective Action 1. The UVR accessory will The accessory is inserted Ensure that the accessory is inserted in the correct slot, as not insert completely in incorrectly. in Figure 2, and that the label is upright. Ensure that the the breaker. accessory is completely seated and that the screw is tightened. 2. The breaker closes when The UVR lockout plunger is not Remove the UVR accessory. Check that the lockout 1 the UVR is de-energized. engaged. plunger protrudes approximately ⁄4 inch out of the accessory; if it does not, replace the UVR. If the plunger length is correct, reinsert the UVR, ensuring good alignment of the accessory to the pocket. Ensure that it is completely seated, flush with the top of the pocket, then tighten the screw to 9 in-lb. The UVR is actually energized. Check that the control power to the UVR is off. 3. The breaker will not close The UVR solenoid is not Check that UVR control power is applied at greater than when the UVR is energized. 80% of the UVR rated voltage. Check that the accessory is energized. completely inserted; reinsert if necessary. If using a 12 Vdc UVR, check that the polarity of the control power matches that shown on the label of the UVR accessory. Note that an otherwise unpowered Trip Unit would be powered up by an energized UVR accessory. 4. The breaker does not trip The breaker is not closed. Verify that the breaker is closed. when UVR control power UVR control power is actually Check that the UVR control power has been removed or is removed. still applied. that its voltage is less than 35% of the rated value. The UVR trip connection is poor. Check that the UVR accessory is completely inserted. Check that the Trip Unit is seated correctly. If the Trip Unit was removed to set the switches, check that it has been correctly installed; remove and reinstall, if necessary. Follow the procedure to remove the Trip Unit and set the 5. The Bell Alarm–Alarm The Bell Alarm–Alarm Only or switches. Check that the switches have been set correctly. Only or Bell Alarm with Bell Alarm with Lockout Lockout does not trip configuration switches on the back of the MicroVersaTrip Plus correctly (trips when it or MicroVersaTrip PM Trip Unit shouldn’t or doesn’t trip are not properly set. Note that when it should). this feature is not available with Power+™ Trip Units. The Bell Alarm–Alarm Only or See the Trouble-Shooting Guide for the Bell Alarm with Bell Alarm with Lockout Lockout in GEH-6278 or the Bell Alarm–Alarm Only in accessory is improperly installed. GEH-6275. These instructions do not cover all details or variations in equipment nor do they provide for every possible contingency that may be met in connection with installation, operation, or maintenance. Should further information be desired o r should particular problems arise that are not covered sufficiently for the purchaser’s purposes, the matter should be referred to the GE Company. g GE Electrical Distribution & Control General Electric Company 41 Woodford Ave., Plainville, CT 06062 GEH-6285C 0697 © 1997 General Electric Company