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SBA: Medium Exposure Protection

Installation, Operation and Maintenance Instructions

INTRODUCTION

Congratulations on joining the extensive list of satisfied Current Technology customers. Since our inception in 1971, we have installed thousands of suppression filter systems to protect critical loads in a wide variety of industries.

The success of our products is a result of more than two decades of focused lab and field research resulting in a unique and exclusive approach to mitigation of power anomalies. Our patented suppression filter systems provide all modes of bi-directional surge sifting and line noise filtering with a revolutionary engineering design called seamless technology.

Taking a unique and superior approach to the mitigation of power anomalies, seamless technology utilizes the individual performance capabilities of four major components -- selenium cells, carbon thin film high energy capacitors, metal oxide varistors (MOVs), and synergistic component geometry -- to deliver "seamless" power without damaging surges, flicker or HF noise.

Only Current Technology combines the four components of seamless technology for an orchestrated effect. Much like an orchestra, all four parts work together to produce results vastly superior to the efforts of one or two components.

To maximize performance from your Current Technology suppression filter system, strategic location is as important as correct wiring methods. Proper physical location enables the SBA to enhance important transient and noise protection.

The SBA suppression filter system should be installed as close to the protected loads as possible; wire lengths and wiring bends should be minimized. This positioning maximizes both surge suppression and filtering, while providing added protection for the protected loads. Please contact our engineering department or your sales representative if you require additional information.

Today's sophisticated electronic systems require the best power conditioning possible. By selecting Current Technology products, you have taken a critical step toward decreasing downtime and ensuring longer product life for your equipment. We look forward to fulfilling your suppression filter system needs.

INSTALLATION

THE FOLLOWING IS INTENDED FOR QUALIFIED ELECTRICAL PERSONNEL ONLY.

READ COMPLETE INSTALLATION INSTRUCTIONS BEFORE BEGINNING INSTALLATION. CALL CURRENT TECHNOLOGY WITH ANY QUESTIONS.

IT IS THE FINAL RESPONSIBILITY OF THE INSTALLING ELECTRICIAN TO ENSURE THAT ALL LOCAL CODES AND OTHER APPLICABLE SAFETY/ENVIRONMENTAL CONDITIONS ARE MET.

Enclosure/Environment: The standard enclosure for the CURRENT TECHNOLOGY SBA suppression filter system is a NEMA Type 1. (Other NEMA Type enclosures are available.) Unit should be installed in a safe protected area with ambient temperature between -40oC to +60oC (-40oF to +140oF). Humidity should be 5-95% non-condensing relative humidity.

1. Verify Voltages: Ensure that ALL voltages are correct and verify the type of power distribution configuration used (i.e., 3 Phase 120/208 grounded WYE) before installing the SBA suppression filter system. See Table 1 for nominal voltages and voltage configurations for each model. Product model number is found on the product label inside unit.

WARRANTY VOID IF CONNECTED TO IMPROPER VOLTAGE. CHECK SOURCE VOLTAGES BEFORE CONTINUING. CHECK NEUTRAL BOND AT DISTRIBUTION TRANSFORMER PROVIDING POWER TO PROTECTED LOADS AND NEUTRAL BOND AT SERVICE ENTRANCE TO VERIFY Xo BOND CONNECTION INTEGRITY. CAUTION !

Units designed for power distribution systems utilizing a ground MUST NOT be installed on ungrounded distribution systems. Refer to Table 1 for configuration and nominal voltages for each model. For "high-leg" delta model SBA120/240-3GHD, the "high-leg" MUST be connected to Phase B (middle phase lug).

2. Punch conduit holes for conduit connectors in gray shaded areas shown in Figure 1 so external wiring will not interfere with internal components nor require excessively sharp bends. Conduit fitting should be located near upper right of enclosure to allow easy connection to input lugs.

NOTE: Larger wire sizes may require top conduit entrance in order to meet wire bending requirements.

Figure 1.

CONDUIT ENTRANCE LOCATION

3. MOUNTING: The following instructions are for mounting unit on wall.

Before electrical connection, mount unit securely and rigidly to building surface or structural member using four mounting holes provided on back wall of unit. Attach conduit and pull wire as necessary. Refer to Figure 2 below for mounting hole dimensions and spacings. The unit is to be installed as close as possible to the facilities' wiring system to minimize wire lengths and avoid unnecessary wire bends.

Figure 2.

MOUNTING TEMPLATE DRAWING

4. Install wiring as detailed below:

A. UNITS WITH INTEGRAL FUSED DISCONNECT SWITCH

Units with optional integral fused disconnect may be installed per the NEC Tap Rules (Article 240) with #15 AWG COPPER conductors, or via a three-pole 15 amp breaker with #4 AWG COPPER conductors.

Neutral tap conductor should be at least 100% of unit Phase conductor ampacity.

1) Remove the plastic phase guard on the top of the disconnect switch to expose the phase lug screws.

2) Wire should be appropriately stripped for inserting into lugs.

3) Connect the three phase conductors into the top lugs of the disconnect switch with Phase A connected to lug labeled L1, Phase B connected to lug labeled L2, and Phase C connected to lug labeled L3. See Figure 3.

4) Lugs should be appropriately tightened.

5) Replace the plastic phase guard on the top of the disconnect switch.

For single phase installations, Phase B/Lug L2 is not used.

FOR DISTRIBUTION SYSTEMS WITH A GROUND AND/OR NEUTRAL CONDUCTOR, SEE BELOW

NEUTRAL INSTALLATION: Connect neutral tap conductor to lug marked "NEUTRAL TERMINAL" as called out in FIGURE 3.

GROUND INSTALLATION: Connect ground tap conductor to green lug mounted in top center of enclosure labeled "SAFETY GROUND TERMINAL" and the copper lug mounted on the top left side of the unit's "MERF" labeled "TRANSIENT GROUND" as called out in FIGURE 3. The ground tap conductor should be tapped from the grounding plane derived from the service entrance connection.

Figure 3.

UNITS WITH INTEGRAL FUSED DISCONNECT SWITCH

B. UNITS WITHOUT INTEGRAL FUSED DISCONNECT SWITCH

All units without an integral fused disconnect MUST be installed via a three-pole 15 amp breaker or external fused disconnect switch with #4 AWG - 1/0 AWG COPPER conductors.

Neutral tap conductor should be at least 100% of Phase conductor ampacity.

1) Wire should be stripped appropriately for inserting into lugs, and lugs should be tightened appropriately.

2) Connect three phase conductors into the lugs on the MERF box as called out in Figure 4 with Phase A connected to lug labeled A, Phase B connected to lug labeled B, and Phase C connected to lug labeled C.

3) Lugs should be tightened appropriately.

For single phase installations, Phase B/Lug L2 is not used.

FOR DISTRIBUTION SYSTEMS WITH A GROUND AND/OR NEUTRAL CONDUCTOR, SEE BELOW

NEUTRAL INSTALLATION: Connect neutral tap conductor to lug marked "NEUTRAL TERMINAL" as called out in FIGURE 4.

GROUND INSTALLATION: Connect ground tap conductor to green lug mounted in top center of enclosure labeled "SAFETY GROUND TERMINAL" and the copper lug mounted on the top left side of the unit's "MERF" labeled "TRANSIENT GROUND" as called out in FIGURE 4. The ground tap conductor should be tapped from the grounding plane derived from the service entrance connection.

Figure 4.

UNITS WITHOUT INTEGRAL FUSED DISCONNECT SWITCH

TO RESET DISTURBANCE COUNTERS

Before attempting reset of the SBA's disturbance counters, the disconnect switch or circuit breaker feeding this unit should be turned to the "Off" position to remove power from the unit. In order to reset the disturbance counters to zero, the count reset connections on the disturbance counter circuit board must be momentarily connected. Refer to Figure 5.

FIGURE 5.

RESET CIRCUIT FOR DISTURBANCE COUNTERS

WIRING THE OPTIONAL FORM "C" DRY CONTACTS

For wiring of the form "C" dry contacts, identify the three output terminals located on the dry contact circuit board: common, normally open and normally closed. These output terminals are labeled C, NO, and NC accordingly. For normally closed operation, connect the normally closed terminal and common terminal to the monitoring indicator. For normally open operation, connect the normally open terminal and common terminal to the monitoring indicator. When the status of the unit's fuses/suppression elements changes, the NC and NO outputs reverse their status and the NC opens while the NO closes. Form "C" dry contacts are rated for 0.5 amps at 120 volts.

5. Before energizing unit, check ALL electrical connections, both field installed and factory connected, for solid electrical connection.

6. DO NOT APPLY POWER UNTIL ALL OF THE FOLLOWING ELECTRICAL FIELD CHECKS HAVE BEEN COMPLETED.

Before applying power to the unit, check off the following electrical field tests. All voltages should be measured with a TRUE RMS voltmeter (i.e. Fluke 87):

o Line-to-Line voltage does not exceed +10% of the rated nominal voltage for the unit. The unit's rated nominal voltage can be found on the label inside the unit door or in Table 1.

o Line-to-Neutral voltage does not exceed +10% of the rated nominal voltage for the unit. The unit's rated nominal voltage can be found on the label inside the unit door or in Table 1.

o Line-to-Ground voltage does not exceed +10% of the rated voltage for the unit as called out in Table 1.

o Neutral-to-Ground voltage does not exceed the rated voltage for the unit as called out in Table 1. CAUTION !

VOLTAGE READINGS OTHER THAN THOSE LISTED AS ACCEPTABLE ABOVE WILL DAMAGE THE UNIT AND VOID THE WARRANTY. IF YOU HAVE QUESTIONS REGARDING VOLTAGES OR WIRING, PLEASE CALL CURRENT TECHNOLOGY.

7. FINAL INSTRUCTIONS:

If all voltages are within tolerance, close and latch door, then apply external power to the unit by engaging external breaker or external disconnect switch. For units with integral fused disconnect switch, turn integral fused disconnect ON. All front panel indicator lights will illuminate.

OPERATIONS

1. The SBA suppression filter system is now operational. Current Technology suppression filter systems are designed to operate indefinitely without any component failures or routine parts replacement.

2. To disengage unit and remove protection from the electrical system, either turn off external power by disengaging the circuit breaker or external fused disconnect switch feeding power to the unit; or, for units with integral fused disconnect switch, turn switch to OFF position.

3. Should verification and test of unit operation be necessary, the integral test point installed in each Current Technology unit allows connection of Current Technology's DTS-2 portable Diagnostic Test Set to test component and total unit function. See Maintenance Section and DTS-2 product literature for further information.

MAINTENANCE

The SBA suppression filter system does not require periodic maintenance. The unit's heavy-duty design should preclude the need for any repairs; however, the following indicators may signal the need for fuse or indicator light replacement and/or unit testing:

UNITS WITH INTEGRAL FUSED DISCONNECT

INDICATION PROCEDURE
One or more phase indicator
lights are off.
1. Check that the external power source supplying power to unit is energized.

2. Check that the integral fused disconnect switch is turned on.

3. Check that fuses are installed and operational.

4. Check connector connecting indicator lights to light board.

5. If all of above are O.K., indicator light board requires replacement. Contact factory.

6. If internal fuse or external breaker are faulty/tripped, use DTS-2 portable diagnostic test set to verify unit integrity before fuse replacement and/or breaker reclosing.

Portable Diagnostic Test Set (Current Technology Model DTS-2) Indications Refer to Diagnostic Test Set Manual for procedures and explanations.

FUSES: The suggested fuses for use with the integral fused disconnect are 30A 200,000 AIC J-type fuses.

UNITS WITHOUT INTEGRAL FUSED DISCONNECT

INDICATION PROCEDURE
One or more phase indicator
lights are off.
1. Check that the circuit breaker/external disconnect switch supplying power to unit is energized.

2. Check connector connecting indicator lights to light board.

3. If all of above are O.K., indicator light board requires replacement. Contact Factory.

4. If external disconnect switch fuses or external breaker are faulty/tripped, use DTS-2 portable diagnostic test set to verify unit integrity before fuse replacement and/or breaker reclosing.

Portable Diagnostic Test Set (Current Technology Model DTS-2) Indications Refer to Diagnostic Test Set Manual for procedures and explanations.

 

TABLE 1: NOMINAL VOLTAGES

MODEL3 VOLTAGE CONFIGURATION NOMINAL VOLTAGES
SBA120/240-2G-DF 120/240 GROUNDED NEUTRAL 240 120 120 0 - 2
SBA120/208-3GY-DF 120/208 GROUNDED WYE 208 120 120 0 - 2
SBA220/380-3GY-DF 220/380 GROUNDED WYE 380 220 220 0 - 2
SBA277/480-3GY-DF 277/480 GROUNDED WYE 480 277 277 0 - 2
SBA347/600-3GY-DF 347/600 GROUNDED WYE 600 347 347 0 - 2
SBA120/240-3GHD-DF 120/240 X 208 GROUNDED NEUTRAL "HIGH-LEG" DELTA 240 A&C: 120 B: 208 A&C: 120 B: 208 0 - 2
SBA240-3GCD-DF 240 GROUNDED CORNER DELTA 240   0/2402  
SBA240-3UD-DF 240 UNGROUNDED DELTA 240      
SBA480-3GCD-DF 480 GROUNDED CORNER DELTA 480   0/4802  
SBA480-3UD 480 UNGROUNDED DELTA 480      
SBA575-3GCD-DF 575 GROUNDED CORNER DELTA 575   0/5752  
SBA575-3UD-DF 575 UNGROUNDED DELTA 575      
SBA600-3GCD-DF 600 GROUNDED CORNER DELTA 600   0/6002  
SBA600-3UD-DF 600 UNGROUNDED DELTA 600      

1NOTE: All line voltages should be within +/- 10% of rated nominal voltage.

2NOTE: For delta systems, phase-to-ground voltages is either 1) The rated phase-to-phase voltage or 2) Zero (0) for the "grounded" phase.

3NOTE: DF suffix on the model number designates unit with integral fused disconnect switch. Nominal voltage ratings remain the same with or without integral fused disconnect.

4NOTE: Neutral-Ground voltages will vary per installation.

FIVE YEAR LIMITED WARRANTY

The Warranty Card must be completely filled out and returned to the factory to initiate Current Technology's Five Year Limited Warranty and Five Year Field Check Program.

LEGAL NOTICE

Current Technology products are protected by patents which may be issued after the publication of this document as well as by one or more of the following patents: 5,023,746; 4,835,650; 4,675,538; 4,675.772; 5,191,502; 4,860,502; 4,127,888; 5,146,357; 4,794,490; 5,257,157. All rights reserved. Current Technology will enforce and protect its patent rights as provided by Section 35 USC and a $500,000 litigation protection insurance policy.

Ask an Engineer if you have any questions regarding this or other Current Technology products.

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For more information about these or any other surge protection products or to speak with one of our sales reps, please contact us.

Tel: 407-380-9200 Fax: 407-380-3911 Email: jwest@psihq.com

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