Installation Hard-wired regulators must be connected to a branch 50 Hz Mini/Micro Computer Regulator (MCR) circuit in accordance with local and national electrical Installation and Operation Manual All regulators generate considerable heat and depend on the codes. Electrical connections are diagrammed in Figure 5. natural draft air circulation for adequate cooling. Proper wiring is determined by the Figure indicated from the It is important that ventilation openings not be obstructed. regulator specications in Table 3. Mounting in a conned or poorly ventilated space should be Operating & Service Instructions Sola Minicomputer Regulators avoided unless special provisions have been made UL White Card Listed Power Supply Classication for ventilation. If operation from a 3-phase source is required, three CSA Certied Transformer Classication hard-wired regulators may be wired in delta as shown in Figure 10. General Description and Specications Hard-Wired Voltage Regulators The Sola Micro/Minicomputer Regulator (MCR) provide Hard-wired voltage regulators vary in size according to the virtually instantaneous voltage regulation, and isolation from output power and may be mounted in either a horizontal or Table 2 gives the proper jumper congurations for needed both transverse and common mode noises for any type vertical position. If mounted in a vertical position (on a wall, input and output voltages. Table 2 also denes the regulator of load. It also suppresses transients with ferroresonant, for example), steel mounting hardware must be selected in connections in relation to the points diagrammed in Figure 6. protects overloads, and serves as a dedicated line. It is the accordance with Table 1 for a secure installation. The wiring Fusing and wire gauge size are detailed in Table 3. ultimate in AC power conditioning equipment. compartment should be at the top. Regardless of position, Operating Temperature Range: -20 to +50C. the regulator should be located where contact with the hot Note: Branch circuit protection must be located in the surface of the transformer is unlikely. Phase: Single primary of each transformer Not in the three-phase operation, fuses must be connected in the primary of each Input Voltage and Frequency: See Table 3 For proper ventilation, allow a minimum of 12 inches of unit, not in the three-phase lines. Output Voltage and Frequency: 110/120/220/240 VAC clearance above the unit and a minimum of 6 inches of clearance on each side. Dimensions of the regulators and Output Voltage Regulation: +3% for an input line variation of On 7.5 and 10 kVA models, the terminal block is located in +15% the morning brackets are presented in Figures 1, 2, 3, and 4. the right unit. Use only the front or right side knockouts of The specications for the gures are listed in Table 3. Output Harmonic Distortion: Less than 3% total RMS content at the right unit for conduit connections. On 15 kVA models, full load. Table 1: Bolt Sizes the terminal block is located in the middle unit. Use only the Efciency: 85% or 90% at full load typical. No loss of output for front knockouts of the middle unit for conduit connections. line loss of 3 msec. Minimum Recommended Size Rated VA of Regulator of Steel Mounting Hardware Noise Reduction: Common mode noise rejection exceeds 120dB. Two or more models of the same rating may be connected 125/250 M6 with their input and output in parallel. However, on models T ransverse noise rejection exceeds 60dB. 500/1000 M7 smaller than 5 kVA, do not parallel both 208 V (X4-X5) and Voltage Surge Suppression: Meets 240 VCT (X1-X2-X3). This may damage the 1500 to 10000 M8 ANSI/IEEE C62.41 output windings. Category A and B waveforms 150000 M12 (formerly IEEE 587-1980). 1 2 3 Figure 5: 7500 VA and 1000015000 VA Electrical Connections Figure 1: Figure 3: Outline Outline Drawing 1 Drawing 3 Primary Voltage Interconnect Connect Lines To Figure 4: H1 to H3 Figure 2: 220-240 H1 & H5 H2 to H5 Outline Outline Drawing 4 380-415 H2 to H3 H1 & H4 Drawing 2 Secondary Voltage Interconnect Connect Lines To 110 X1 & X2 or X2 & X3 120 X4 & X2 or X5 & X2 220 X1 & X3 240 X4 & X5 MCR 50 Hz 7500 VA 4 5 6 Table 2: Wire and Jumper Congurations Primary Voltage Interconnect Connect Lines To 220-240 H2 to H3 H1 & H4 Input Jumper Output Unit (VA) Input Volts Terminals Connection Connection 380-415 H2 to H3 H1 & H5 250 to 5000 (H1-H3) 90-130 H1-H4 Secondary Voltage Interconnect Connect Lines To (H2-H4) 110 X1 & X2 or X3 & X2 180-260 H1-H4 (H2-H3) Figure 6. (All Models) 110-X1-X2 or 120 X4 & X2 or X5 & X2 3-Phase Connections 310-450 H1-H5 (H2-H3) X2-X3 120 X4-X2 or * Connect Per Table 2 7500 (H1-H3) 220 X1 & X3 X2-X5 180-260 H1-H5 (H2-H5) 220-X1-X3 240 X4 & X5 240 X4-X5 310-450 H1-H4 (H2-H3) MCR 50 Hz 10000 - 15000 VA 10000 to 15000 180-260 H1-H4 (H2-H3) H1-H5 (H2-H3) Table 3 Input Voltage Output Voltage Dimensions Approx. o o Required Circuit Protection / Minimum Gauge 90 C WIRE Minimum Gauge 90 C WIRE Shipping Catalog VA Voltage Input Voltage Output OD Dim. Dim. Dim. Dim. Dim. Dim. Dim. Number Weight Dim. H A B C D E F G 110-120 220-240 380-415 110-120 220-240 380-415 110-120 220-240 (kg) (cm) (cm) (cm) (cm) (cm) (cm) (cm) (cm) 120 110, 120, 220, 240, 380, 415 110, 120, 220, 240 63-23-612-8 A 23,11 18,90 11,43 13,67 12,07 10,48 5,53 0,79 X 1,75 8,08 3 1.5 0.8 1, 0 1, 0 1, 0 1,0 1,0 250 110, 120, 220, 240, 380, 415 110, 120, 220, 240 63-23-625-8 A 26,92 18,90 11,43 13,67 12,07 10,48 5,53 0,79 X 1,75 12,24 6 3 1 1, 0 1, 0 1, 0 1,0 1,0 500 110, 120, 220, 240, 380, 415 110, 120, 220, 240 63-23-650-8 A 33,66 16,21 19,69 22.86 20,64 14,30 9,12 0,79 X 2,06 18,14 10 6 1 1, 5 1, 0 1, 0 1,0 1,0 1000 110, 120, 220, 240, 380, 415 110, 120, 220, 240 63-23-710-8 A 45,57 16,21 19,69 22,86 20,64 14,30 14,83 0,79 X 2,06 28,12 15 10 3 2, 5 1, 5 1, 0 1,5 1,0 2000 110, 120, 220, 240, 380, 415 110, 120, 220, 240 63-23-720-8 B 44,65 23,72 26,82 32,38 29,84 10,69 12,70 1,12 X 1,75 50,81 30 15 10 6, 0 2, 5 1, 5 4,0 1,5 3000 110, 120, 220, 240, 380, 415 110, 120, 220, 240 63-23-730-8 B 67,72 23,81 26,90 32,38 29,84 15,39 9,29 1,12 X 1,75 72,59 45 25 15 16,0 4,0 2,5 6,0 2,5 5000 110, 120, 220, 240, 380, 415 110, 120, 220, 240 63-23-750-8 B 76,20 23,81 26,90 32,38 29,84 23,79 9,37 1,12 X 1,75 109,79 80 40 20 25,0 10,0 4,0 16,0 4,0 7500 220, 240, 380, 415 110, 120, 220, 240 63-23-775-8 C 71,12 23,81 62,23 65,55 63,02 18,71 9,37 1,12 X 1,75 176,94 - 60 30 16,0 6,0 - 25,0 10,0 10000 220, 240, 380, 415 110, 120, 220, 240 63-23-810-8 C 76,20 23,81 62,23 65,55 63,02 23,80 9,37 1,12 X 1,75 220,50 - 80 40 25,0 10,0 - 35,0 16,0 15000 220, 240, 380, 415 110, 120, 220, 240 63-28-815-8 D 76,20 23,81 91,44 97,15 76,20 23,81 91,44 97,15 349,35 - 110 60 50,0 16,0 - 45,0 25,0 7 8 9Response Time Operating Notes and Data An important advantage of the Sola principle of static magnetic regulation is its exceedingly fast response time Safety Notice compared with other types of AC regulators. Transient High voltages are present inside the MCR. Do not reach changes in supply voltage are usually corrected with 1-1/2 inside the unit while it is energized. To measure voltage, cycles or less the output voltage will not uctuate more than de-energize the unit, connect the meter, and then a few percent. re-energize the unit. These units contain no user-serviceable parts. Input Characteristics The MCR regulator transformer includes a resonant Checking with Voltmeters circuit, which is energized whether it is serving load or not. All input and output voltage measurements should be made Therefore, the input current at no load is approximately 35% with a true RMS-responding voltmeter. A certain amount of Operation With Switchmode Power Supplies of the full-load level, even at light or no load. Input power harmonics in the output may cause other types particularly factor will average 90-100% at full load, but may drop to If an MCR is used as a source for a switchmode power rectier types to give inaccurate indications. about 75% at half load and 25% at no load. In any case, it is supply, a slight amount of ringing may be noticed on the sine wave output of the MCR at half cycle intervals for a always leading. Rating and Characteristics short duration. This ringing occurs at the point when the The MCR series are built for several VA ranges. See the switchmode power supply current demand drops to zero. Current Limitation silkscreen of each regulator for appropriate data. When the load is increased beyond the MCR rated value, The ringing need not be a cause for concern since it is of a point is reached where the output voltage suddenly relatively low magnitude and frequency. Both series have Load Regulation been tested with a variety of switchmode power supplies collapses and will not regain its normal value until the load Changes in output voltage resulting from changes in and it has been determined that the ringing never affected is partially released. Under short circuit conditions, the load resistive loads from no load to full load (100% P.F.) are the DC outputs, nor has it been found to degrade the current is limited to approximately twice of the rated full-load approximately four percent. value, and the input power to less than 10% of normal. The components of any switchmode power supply. MCR will protect both itself and its load against damage from Effect of Load Power Factor Effect of Frequency excessive fault currents. Fusing of load circuits is Median value of output of voltage will vary from silkscreen Changes in the frequency of the supply voltage will be not necessary. rating if the load has a power factor other than that for which directly reected in the output voltage. A change of about the transformer was designed. Load regulation will also be 1.8% in output voltage will occur for every 1% change in greater as the inductive load power factor is decreased. input frequency, and in the same direction as the However, the resulting median values of output voltage will frequency change. be regulated against supply line changes at any reasonable load or load power factor. 10 11 12 Operation With Motor Loads Troubleshooting E. No Output Voltage A. Nominal Voltage Too High Because of the current-limiting effect described above, 1. Check power source breakers or fuses. 1. The load may be considerably less than full rating. special attention should be given to motor applications. In (See Load Regulation, Page 10). general, the regulator must have a load rating nearly equal 2. Check input switch. to the maximum power drawn during the starting cycle. This 2. The load may have a leading power factor. may run from two to eight times the normal (running) rating 3. Check continuity between input terminals, and also of the motor. In doubtful cases, it is advisable to measure the between output terminals. B. Nominal Voltage Too Low actual starting current. 1. Load power factor may be lagging. 4. For units with output circuit breaker, reduce load and Operating Temperature reset circuit breaker. 2. Unit may be slightly overloaded. Standard units are designed to operate in ambient (See Current Limitation, Page 12). temperatures of minus 20C to plus 50C. In operation, a F. Transformer Operating Temperature temperature rise will occur whether or not the transformer C. Does Not Regulate Closely 1. The transformer used in the regulators is designed to is serving load. Normally, this rise may fall anywhere in the 1. Unit may be slightly overloaded. operate at high ux density, and hence, relatively high (See Current Limitation, Page 12). range of 45C to 110C, depending on the regulator type and temperatures. After connection to line for a half-hour or rating. In any case, the maximum operating temperature at so, the transformer core structure may be too hot to touch 2. Actual line voltage swings may be outside the rated range an ambient of 50 is always within safe operating limits for with bare hand. This is normal and need give no concern. of unit, particularly on low side. the class of insulating material used. Note 3. On varying loads, a certain amount of load regulation Effect of Temperature In case regulator is operating but does not appear to have may be mixed with the line voltage regulating action. The output voltage will show a small change as the unit correct output, it is very helpful to apply the (See Load Regulation, Page 10). warms up to stable operating temperatures at a constant following test: ambient temperature. This change may be about on or D. Output Voltage Very Low (20-60V) two percent, depending on the units VA rating. At a stable 1. Disconnect the working load. 1. Unsuspected or unplanned overloads of substantial size operating temperature, the output voltage will change slightly may occur intermittently (motor-starting currents, solenoid with varying ambient temperature. This shift is approximately inrush currents, etc.). See Current Limitation, Page 12. 2. Connect a dummy load of lamps, heaters, or other one percent for each 40C of temperature change. resistive load substantially equal to the full-load rating of 2. One or more capacitor units in the regulator may regulator, directly across its output terminals. be defective. Servicing Because the Sola MCR is a simple, rugged device without 3. Measure the output voltage of the regulator using a true moving parts or manual adjustments, no routine servicing RMS type voltmeter directly across its output terminals. or maintenance is needed. In case of apparent poor performance, the user is urged to check the following This test will usually establish whether the apparent poor points immediately: performance is due to a fault in the regulator or 13 14 15 to some peculiarity of the working load. Field Replacement of Capacitors Return Policy Capacitors used in all regulators are the highest commercial Most instances of initial failure to operate properly can grade. Each one is given a rigid acceptance test upon be remedied through a telephone conversation between receipt. Nevertheless, as with all capacitors, there is a the user and Technical Service. If it is determined that a certain small percentage of failure. The Sola guarantee product must be returned, contact your local Sola/Hevi-Duty includes free replacement at the factory of any capacitor distributor for a Return Authorization. If the distributor is 50 Hz Mini/Micro Computer Regulator (MCR) unit which fails within one year of sale. Older units can be unknown, contact Customer Service at (800) 377-4384 Installation and Operation Manual replaced at moderate charge. for instructions. Where competent technical help is available, it may be All returns to the Sola/Hevi-Duty factory must have a Return possible to test and identify defective capacitors in the eld, Authorization (R.A. ).Information required for a Return and to make replacement with new capacitors shipped from Authorization (R.A. ): the factory. In all such cases, factory advice and cooperation must be requested in advance. 1. Sola catalog number and/or model number Warranties 2. Serial number Sola/Hevi-Duty warrants its standard catalog products to be free from defects in materials and workmanship and 3. Company name, address, phone number and agrees to correct by repair or replacement, at the option of contact person Sola/Hevi-Duty, products that may fail in service provided the product has been installed, operated and maintained in 4. Proof of purchase from Distributor accordance with accepted industry practice. 5. Description of problem Sola/Hevi-Duty The Power Quality Experts Warranty begins at the date of manufacture and is according to the following schedule: For proper handling upon receipt at Sola/Hevi-Duty, the R.A. must be clearly placed in several locations on the Toll-Free (800) 377-4384 1. Standard catalog transformer and single phase, power outside of the package. Sola/Hevi-Duty is not responsible FAX: (800) 367-4384 conditioning products 10 years plus an additional for damage on returned goods not packaged properly or www.solaheviduty.com 2 years if the registration card enclosed with the customer-abused units. transformer is completed and returned to Sola/Hevi-Duty P/N 272-37066-1 Rev. 2 (February 15, 2006) within 14 days after installation. 2. Products manufactured to a purchasers 16 17 specications 1 year.