Emerson MCR Portable Schematics

50 Hz Mini/Micro

Computer Regulator (MCR) Series

Installation and Operation Manual

Operating & Service Instructions

Sola Minicomputer Regulators
UL White Card Listed – Power Supply Classification
CSA Certified – Transformer Classif icat ion

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50 Hz Mini/Micro

Computer Regulator (MCR) Series

Installation and Operation Manual

General Description and Specifications

The Sola Micro/Minicomputer regulator provides voltage regulation and
isolation from both transverse and common mode noises for any type of load.
It also suppresses transients, protects from overloads and serves as a
portable dedicated line. It is the ultimate in AC power conditioning equipment.

Two types of units are manufactured. Hardwired units, rated 125 to 1500VA,
should be permanently installed by competent electricians. Portable units,
rated 150 to 2000VA, are designed for office type environments and have a
low 43dB sound level.

Operating Temperature Range:
Phase:
Input Voltage (Hardwired Models):
Input Voltage (Portable Models):
Output Voltage (Hardwired models):
Output Voltage (Portable models):
Output Voltage Regulation:

Output Harmonic Distortion:

Efficiency:
Dropout:

Common Mode Noise Rejection:
Transverse Mode Noise Rejection:
Safety Approvals:

* The unit must not be powered while operating this switch. Unplug the unit

from the power source before using this switch.

-20°C to + 50°C
Single
Refer to Table 4
220/240 VAC
110/120/220/240 VAC
220 or 240 VAC, switch selectable*
+/-5% for an input line variation

of +/-15%.
Less than 3% total RMS content at

full load with rated input voltage
85% at full load.
No loss of output for line loss of

3msec.
Greater than 120dB
Greater than 60dB
Designed and built per VDE 0550

and 0806. Specifications
(compatible with IEC 380/435)

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50 Hz Mini/Micro

Computer Regulator (MCR) Series

Installation and Operation Manual

Safety Notice

High voltages are present inside all regulators. Do not reach inside a unit
when it is energized. To measure voltage, de-energize the unit, connect the
meter, and then re-energize the unit.

Hardwired Units

Installation – Mechanical

Table 1 shows the physical dimensions of the hardwired units. These units
can be mounted with the “This Side Up” designation upwards, or they can be
mounted horizontally. Allow 60cm above and 30cm on either side of the
regulator during installation.

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Computer Regulator (MCR) Series

Installation and Operation Manual

Table 1. Hardwired Regulator Dimensions

50 Hz Mini/Micro

VA

125 63-23-612-8 A 23,11 18,90 11,43 13,67 8,08
250 63-23-625-8 A 26,92 18,90 11,43 13,67 12,24

500 63-23-650-8 A 33,66 16,21 19,69 22.86 18,14
1000 63-23-710-8 A 45,57 16,21 19,69 22,86 28,12
2000 63-23-720-8 B 44,65 23,72 26,82 32,38 50,81
3000 63-23-730-8 B 67,72 23,81 26,90 32,38 72,59
5000 63-23-750-8 B 76,20 23,81 26,90 32,38 109,79
7500 63-23-775-8 C 71,12 23,81 62,23 65,55 176,94

10000 63-23-810-8 C 76,20 23,81 62,23 65,55 220,50
15000 63-28-815-8 * 76,20 23,81 91,44 97,15 349,35

VA

125 63-23-612-8 A 12,07 10,48 5,53 0,79 X 1,75 8,08

250 63-23-625-8 A 12,07 10,48 5,53 0,79 X 1,75 12,24

500 63-23-650-8 A 20,64 14,30 9,12 0,79 X 2,06 18,14
1000 63-23-710-8 A 20,64 14,30 14,83 0,79 X 2,06 28,12
2000 63-23-720-8 B 29,84 10,69 12,70 1,12 X 1,75 50,81
3000 63-23-730-8 B 29,84 15,39 9,29 1,12 X 1,75 72,59
5000 63-23-750-8 B 29,84 23,79 9,37 1,12 X 1,75 109,79
7500 63-23-775-8 C 63,02 18,71 9,37 1,12 X 1,75 176,94

10000 63-23-810-8 C 63,02 23,80 9,37 1,12 X 1,75 220,50
15000 63-28-815-8 * 94,56 23,80 9,37 1,42 X 1,75 349,35

Catalog
Number

Catalog
Number

Outline

Drawing

Outline

Drawing

Dim.

A

(cm)

Dim.

E

(cm)

Dim.

B

(cm)

Dim.

F

(cm)

Dim.

C

(cm)

Dim.

G

(cm)

Dim.

D

(cm)

Dim.

H

(cm)

Approx.

Shipping

Weight (kg)

Approx.

Shipping

Weight (kg)

Same as (c), but is a triplex assembly.

•

Note:

Dimension C includes heat shield around core for all units

except 125, 250 and 500VA, which have no shield.

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50 Hz Mini/Micro

Computer Regulator (MCR) Series

Installation and Operation Manual

Figure 1: Hardwired Regulator Dimensions (Refer to Table 1).

Knockout locations are typical.

Outline A Outline B Outline C

Table 2 shows the recommended bolt size for mounting the hardwired units.

Table 2. Bolt Sizes

Rated VA

of Unit

125/250 M6

500/1000 M7

1500 to 10000 M8

150000 M12

Minimum Recommended Size

of Steel Mounting Hardware

Portable Units

Installation – Mechanical

These units may be installed in any protected environment. Allow 60 cm
above and 30 cm on either side of the installation. Dimensions of the portable
regulators are given in Table 3.

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50 Hz Mini/Micro

Computer Regulator (MCR) Series

Installation and Operation Manual

Table 3. Portable Regulator Dimensions

Catalog
Number

63-13-625-9 250 33,66 19,56 17,93 15,5
63-13-650-9 500 41,27 21,60 21,59 20,0

63-13-710-9 1000 41,27 21,60 21,59 28,63

63-13-720-9 2000 41,91 27,94 26,34 53,18

VA

Figure 2: Dimensions - Portable Regulators (Refer to Table 3)

Dim. A

(cm)

Dim. B

(cm)

Dim. C

(cm)

Weight (kg)

Approx.

Shipping

Hardwired Models

Installation – Electrical

These regulators may be jumpered for different input and output voltages.
The terminal block is at the top of the unit in units 2kVA and smaller.
Larger units (3kVA and up) have the terminal block located in the capacitor
compartment. Table 4 gives the proper jumper configurations for needed
input and output voltages. Figure 3 shows the schematic diagrams of the
units.

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Computer Regulator (MCR) Series

Installation and Operation Manual

Table 4. Wire and Jumper Configurations

50 Hz Mini/Micro

Unit
(VA)

250 to 5000

7500

10000 to

15000

Input
Volts

90-130 H1-H4
180-260 H1-H4 (H2-H3)
310-450 H1-H5 (H2-H3)
180-260 H1-H5
310-450 H1-H4 (H2-H3)
180-260 H1-H4 (H2-H3)

Input

Terminals

H1-H5 (H2-H3)

Figure 3. Hardwired Unit Schematic

Jumper

Connection

(H1-H3)
(H2-H4)

(H1-H3)
(H2-H5)

Output

Connection

(All Models)

110-X1-X2 or X2-X3

120 X4-X2 or X2-X5

220-X1-X3

240 X4-X5

Table 5 shows recommended wire gauges and fusing for the units. However,
this table is not meant to supercede local and national wiring codes and
standards. Make certain to adhere to local and national code requirements.

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Computer Regulator (MCR) Series

Installation and Operation Manual

Table 5. Recommended Wire Gauges and Fusing

50 Hz Mini/Micro

Catalog
Number

63-23-612-8

63-23-625-8

63-23-650-8

63-23-710-8

63-23-720-8

63-23-730-8

63-23-750-8

63-28-775-8

63-28-810-8

Rated

Volts

110-120
220-240
380-415
110-120
220-240
380-415
110-120
220-240
380-415
110-120
220-240
380-415
110-120
220-240
380-415
110-120
220-240
380-415
110-120
220-240
380-415

220-240
380-415

220-240
380-415

Req. Circuit

Protection

(In Amps,

Fast-Blow Fuse)

3

1.5
0,8

6
3
1

10

6

3
15
10

6
30
15
10
45
25
15
80
40
20

60
30

80
40

Min. Gauge

°C Wire

90

(In Cross

Sectional mm

1,0
1,0
1,0
1,0
1,0
1,0
1,5
1,0
1,0
2,5
1,5
1,0
6,0
2,5
1,5

16,0

4,0

2,5
25,0
10,0

4,0
16,0

6,0

25,0
10,0

2

)

Rated

Volts

110/120
220/240

110/120
220/240

110/120
220/240

110/120
220/240

110/120
220/240

110/120
220/240

110/120
220/240

110/120
220/240

110/120
220/240

Min. Gauge

90°C Wire

(In Cross

Sectional mm2)

1,0
1,0

1,0
1,0

1,0
1,0

1,5
1,0

4,0
1,5

6,0
2,5

16,0

4,0

25,0
10,0

35,0
16,0

63-28-815-8

220-240
380-415

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110

60

50,0
16,0

110/120
220/240

45,0
25,0

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50 Hz Mini/Micro

Computer Regulator (MCR) Series

Installation and Operation Manual

Other Considerations for Hardwired Units

Three Phase Operation

If operation from a three phase source is required, three hardwired regulators
may be wired in delta as shown in Figure 4.

Note

Required branch circuit protection must be located in the primary of each
regulator, not in the three phase line. The outputs must supply three
independent single phase loads of the same voltage rating. Do not connect
loads phase to phase when the three phase configuration is used.

Multiple Operation

Two or more hardwired models of the same rating may be connected with
their input and output in parallel. However, on models smalle r than 5kVA,
do not parallel both 220VCT (X1-X2-X3) and 240VCT (X4-X2-X5). This may
damage the output windings.

Input Power Switch

Because the regulators include resonant circuitry that is energized whether
or not the unit is serving a load, it is very desirable to install a disconnect
switch in the primary circuit.

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Computer Regulator (MCR) Series

Installation and Operation Manual

Figure 4. Three Phase Connections

A: Isolated, Single Phase Loads

50 Hz Mini/Micro

*Connect per Table 4

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B: Separate, Single Phase Loads in Grounded Wye

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50 Hz Mini/Micro

Computer Regulator (MCR) Series

Installation and Operation Manual

Installation-Electrical

Portable Regulators

These units are equipped with one input off/on switch and one three-wire,
earthing-type input cord. The installer must add the plug ends required for
use. Figure 5 shows the portable regulators schematically. Color codes for
the supplied line cords are as follows:

Brown- Hot Black- Hot
Blue- Neutral Or White- Neutral
Green/Yellow – Earth Green- Earth

Figure 5. Portable Regulator Schematics

250-1000 VA (250 VA has two outlets)

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50 Hz Mini/Micro

Computer Regulator (MCR) Series

Installation and Operation Manual

2000 VA

There is a switch on the front of the portable regulators that allows the
selection of either 220 or 240VAC output.

Note

The unit must not be powered while operating this switch. Unplug the unit
from the power source before using this switch.

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50 Hz Mini/Micro

Computer Regulator (MCR) Series

Installation and Operation Manual

Physical Characteristics of Operation – All Units

Operating Temperature

Standard units are designed to operate in ambient temperatures of -20°C
to +50°C. In operation, a temperature rise will occur whether or not the
transformer is serving a load. Normally, this rise may fall anywhere in the
range of 45-100°C. depending on the regulator type and rating. In any case,
the maximum operating temperature at an ambient of 50°C is always within
safe operating limits.

Magnetic Fields

In almost all applications, this effect may be disregarded. In certain
applications, care should be exercised in the orientation of the core with
respect to critical circuits, in order to minimize the effect in the field.

Electrical Characteristics of Operation – All Units

Checking with Voltmeters

All checks on output voltages should be made with a true RMS voltmeter.
Rectifier type voltmeters will not give accurate readings due to the small
amount of output harmonics present.

Load Regulation

Changes in output voltages resulting from changes in resistive loads from no
load to full load (at a 100% power factor) are approximately four percent.

Effect of Load Power Factor

The median value of output voltage will vary from the nameplate rating if the
load has a power factor other than that for which the regulator was designed.
Load regulation will also be greater as the inductive load power factor is
decreased. However, the resulting median values of output voltage will be
regulated against supply line changes at any reasonable load or load power
factor.

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50 Hz Mini/Micro

Computer Regulator (MCR) Series

Installation and Operation Manual

Use with Switchmode Power Supplies

If a CVS transformer is used as a source for a switchmode power supply, a
slight amount of ringing may be noticed on the sinewave output of the CVS at
half cycle intervals for a short duration. This ringing occurs at the point when
the switchmode power supply current demand drops to zero. The ringing
should not be a cause for concern since it is of relatively low magnitude and
frequency. The CVS has been tested with a variety of switchmode power
supplies and it has been determined that the ringing never affects the DC
outputs, nor does it degrade the components of any switchmode power
supply.

Effect of Temperature

The output voltage will show a small change as the unit warms up to stable
operating temperatures at a constant ambient temperature. This change may
be about one or two percent depending on the unit’s VA rating. At a stable
operating temperature, the output voltage will change slightly with varying
ambient temperature. This shift is approximately one percent for each 40°C
of temperature change.

Response Time

Transient changes in supply voltage are usually corrected within 1-1/2 cycles
or less; the output voltage will not fluctuate more than a few percent.

Input Characteristics

The regulator transformer includes a resonant circuit that is energized
whether it is serving a load or not. Therefore, the input current at no load is
approximately 35% of the full-load primary current. Input power factor will
average 90-100% at full load but may drop to about 75% at half load and
25% at no load. In any case, it is always leading.

Current Limitation

When the load is increased beyond the regulator’s rated value, a point is
reached where the output voltage sudden ly col lapses and wi ll not rega in its
normal value until the load is partially released. Under short-circuit
conditions, the load current is limited to approximately 150% of the rated
full-load value and the input power to less than 10% of normal. The regulator
will protect both itself and its load against damage from excessive fault
currents. Fusing of load circuits is not necessary.

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50 Hz Mini/Micro

Computer Regulator (MCR) Series

Installation and Operation Manual

Operation on Motor Loads

Because of the current-limiting effect described above, special attention
should be given to motor applications. In general, the regulator must have a
load rating nearly equal to the maximum power drawn during the starting
cycle. This ma y run from two to either times the normal (running) rating of the
motor. In doubtful cases, it is advisable to measure the actual starting
current.

Servicing

No Routine Maintenance Necessary

Because the Sola Micro/Min ic om put er Regula tor is a simp le , rugged dev ic e
without moving parts or manual adjustments, no routine servicing or
maintenance is needed. In the event of apparent poor performance, check
the following points immediately:

A. Nominal Voltage Too High

1. The load may be considerably less than full rating.
(See: Load Regulation”, page 13).

2. The load may have a leading power factor.

B. Nominal Voltage Too Low

1. Load power factor may be lagging.

2. Unit may be slightly overloaded. (See Current Limitation”, page 14).

C. Does Not Regulate Closely

1. Unit may be slightly overloaded. (See Current Limitation”, page 14).

2. Actual line voltage swings may be outside the rated range of unit,
particularly on low side.

3. On varying loads, a certain amount of load regulation may be
mixed with the line voltage regulating action. (See “Load
Regulation”, page 13).

D. Output Voltage Very Low

1. Unsuspected or unplanned overloads of substantial size may occur
intermittently (motor-starting currents, solenoid inrush currents, etc.).
(See “Current Limitation”, page 14).

2. One or more capacitor units in regulator may be defective.

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50 Hz Mini/Micro

Computer Regulator (MCR) Series

Installation and Operation Manual

E. No Output Voltage

1. Check power source beakers or fuses.

2. Check input switch (on portable units).

3. Check continuity between input terminals, and also between output
terminals.

F. Transformer Operating Temperature

1. The transformer used in these regulators is designed to operate at
high flux density, and hence, relatively high temperatures. After
connection to line for a half- hour or so, the transformer core
structure may be too hot to touch with the bare hand. This is normal
and should not be a concern.

Note

In case the regulator is operating but does not appear to have the correct
output,

it is very helpful to apply the following test

1. Disconnect the working load.

2. Connect a dummy load of lamps, heaters, or other resistive load
substantially equal to the full-load rating of regulator, directly across
its output terminals.

3. Measure the output voltage of the regulator using a true RM type
voltmeter directly across its output terminals.

:

This test will usually establish whether the apparent poor performance is due
to a fault in the regulator or to some peculiarity of the working load.

Factory Test and Inspection

If the field test suggested earlier indicated that the regulator itself may be
faulty, a full report of the difficulty should be communicated to the place of
purchase. The Authorized Sola/Hevi-Duty Distributor may then suggest
further helpful field tests or authorize return for inspection at once. A Return
Authorization Number will be issued. This Number must appear on the
outside of the shipping container, otherwise the shipment will not be
accepted.

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50 Hz Mini/Micro

Computer Regulator (MCR) Series

Installation and Operation Manual

Field Replacement of Capacitors

Capacitors used in all regulators are of the highest commercial
grade. Nevertheless, there is a certain small percentage of failure. The
Sola/Hevi-Duty limited warranty includes free replacement of any capacitor
unit that fails within five years of sale. Older units can be replaced for a
moderate charge.

Where component technical help is available, it may be possible to test and
identify defective capacitors in the field, and to make field replacement with
new capacitors. In all such cases, advice and cooperation must be requested
in advance.

Warranties

Sola/Hevi-Duty warrants its standard catalog products to be free from
defects in materials and workmanship and agrees to correct by repair or
replacement, at the option of Sola/Hevi-Duty, products that may fail in service
provided the product has been installed, operated and maintained in
accordance with accepted industry practice.

Warranty begins at the date of manufacture and is according to the following
schedule:

1. Standard catalog transformer and single phase, power conditioning
products – 10 years plus an additional 2 years if the registration
card enclosed with the transformer is completed and returned to
Sola/Hevi-Duty within 14 days after installation.

2. Products manufactured to a purchaser's specifications – 1 year.

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50 Hz Mini/Micro

Computer Regulator (MCR) Series

Installation and Operation Manual

Return Policy

Most instances of initial failure to operate properly can be remedied through
a telephone conversation between the user and Technical Service. If it is
determined that a product must be returned, contact your local Sola/Hevi­Duty distributor for a Return Authorization. If the distributor is unknown,
contact Customer Service at [phone] for instructions.

All returns to the Sola/Hevi-Duty factory must have a Return Authorization
(R.A.#). The following information required for a Return Authorization (R.A.#):

1. Sola catalog number and/or model number.

2. Serial number.

3. Company name, address, phone number and contact person.

4. Proof of purchase from Distributor.

5. Description of problem.

For proper handling upon receipt at Sola/Hevi-Duty, the R.A.# must
be clearly placed in several locations on the outside of the package.
Sola/Hevi-Duty is not responsible for damage on returned goods not
packaged properly or customer-abused units.

SOLA – The Power Quality Experts

Toll-Free [phone]

FAX: [phone]

www.sola-hevi-duty.com

P/N 272-37066-01 REV. 02 8/99

G: literature/manuals/50HzMCR.doc

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