USC II “Universal Simple Control” Specification

USC-II The USC-II offers simplicity in setup, installation, and superb performance in a cost effective universal voltage regulator control for applications not requiring remote communications capabilities such as line voltage regulators. It offers an economically attractive alternative to continuing the repair of existing analog regulator control or where changes in the distribution system now present the possibilities of loop feeds on "Wye" distribution systems. With its advanced technology, USC-II has reverse power flow capabilities as well as 0.5% metering accuracy over a range of -40°C to +85°C. The USB PC/data port can be used to either configure settings into the USC-II or to capture up to 12 months of events and metered data onto an 1GB ICMI Flash Drive DATA-PAK in monthly files. The USC-II Universal Simple Control is a microprocessor-based single-phase tap changer voltage regulator control and can be retrofitted onto all popular single-phase step voltage regulators. Differences in regulator types - operation counters, neutral polarity, and holding switch- are easily addressed with USC-II hardware and setup program options. The USC-II firmware is upgradeable via USB drive. The USC-II has been tested and is compliant with ANSI-IEEE RFI-SWC C-37.90-1&2 (2002-2004 RF Standards) by the AEP-Dolan Tech Center in Columbus, OH.

Regulation Set Points (Forward/Reverse Flow)

Bandcenter (100.0 to 135.0 V)
Bandwidth (1.0 to 6.0 V)
Time Delay (5 to 180 sec)
Line Drop Compensation
- (R) Resistive (-24.0 to +24.0 V)
- (X) Reactive (-24.0 to +24.0 V)

Forward/Reverse Power Flow – 3 Modes

Locked Fwd/Bi-Directional/Neutral Reverse
LED Reverse Power Indication

Regulating Algorithms - CT Rating

Sequential - algorithm
Max CT Current: 400 milliamps

Voltage Limiting

Adjustable HI and LO limits with Auto-Runback and individual enables

Voltage Reduction - Front Panel or SCADA

Single Step with LED indication lowers the effective set voltage by adjustable percentage
Fully adjustable two-step automatic voltage reduction based on load current
Optional 3-step auxiliary voltage reduction via SCADA (requires XIO interface)

Tap Position-Knowledge Indicator

NEUTRAL – indicating LED
No-loss Tap tracking
Electronic operation counter (settable)

Additional Control Features

Factory defaults for control parameters
120VAC auxiliary power

Fuse Protected

Panel fuse (2A)
Tap motor fuse (6A)
External Source polarity protection (internal fuse)

Regulator Data

Electronic operation counter - settable

Interface

Menu driven with intuitive, easy to use panel controls. No codes to remember. Menu on front panel.
2 line x 20 “SUNBRIGHT” LCD with contrast control and backlighting.
SET-UP Security lockout
USB port for programming settings using pc or for capturing metered data with flash drive DATA-PAK

Universal Compatibility with Voltage Regulators

Configurable parameters allow setup with all commonly available regulator transformers:
- GE ML 32 Step Voltage Regulator
- Siemens JFR Regulator
- Howard SVR-1 Regulator
- Cooper/McGraw Edison VR-32 Regulator, including spring, direct, and Quick Drive tap changers
50 and 60 Hz. nominal operation
Ratio-correcting transformers are not required
Source-side PT not required

Configuration

Settable from front panel, from a USB drive, or a PC with USC-II Configuration Utility

ANSI Class 1 Metering (Direct Sensing)

Load voltage (ANSI C-57.15) -40 to + 85C
Load current (ANSI C-57.15) -40 to + 85C
Accuracy - 0.5 % excluding CT-VT errors

Event and Metered Data Logging

Load Voltage, Load Amps, Load Center Voltage, Power Factor, Phase Angle, KVA, KW, KVAR, Frequency, Tap Position, Operations Count, plus Min/Max values
Events include Tap Changes, Reverse Power Flow, Voltage Limits, Alerts, DATA-PAK status, AUTO/MANUAL switch status
1GB USB Flash drive DATA-PAK captures time stamped events and metered data for 12 monthly periods, with data logged every 5 seconds. DATA-PAK is capable of 106 read-write operations, operates from -40 to +85°C, and is built to MIL Spec standards
Windows-based Data/Event Logging utility for analysis, with PDF and Excel export capability

Indicator L.E.D. Lights

HIGH BAND
IN-BAND
LOW BAND
HIGH LIMIT
LOW LIMIT
VOLTAGE RED
REVERSE PWR
ALERT
SET-UP/SCROLL

NEUTRAL: L.E.D. indication when in Neutral Position

Lower Panel Controls -

VOLTMETER ONLY: Actual load voltage input – for control meter reading ONLY!
EXTERNAL SOURCE: To apply an external 120VAC source to the USC-II. (polarity critical!)
DRAG HAND/RESET: For manual resetting of the draghand to current tap position
PANEL and MOTOR: Separate replaceable fuses for Control and Motor (2 and 6 Amp)
MOTOR CONTROL Switches:
- AUTO – For normal (automatic) voltage driven operation of the tap changer
- OFF-SETUP – For configuring the control
- MANUAL together with RAISE/LOWER – For manual operation of the tap changer
MAIN POWER Switches:
- INTERNAL/OFF/EXTERNAL* - INTERNAL for normal operation, EXTERNAL for trouble-shooting, or OFF to turn off control power.

Upper Panel Controls – UP and DOWN Arrows to navigate the Menu

SET-UP/OPERATE - SET-UP for configuring the control, SCROLL for scrolling values on the display
USB Flash Drive DATA-PAK (shown above) – Removable, used to log both events and metered values

*Note, When using 120VAC external power, polarity is CRITICAL!

Note: EXTERNAL SOURCE power obtained from DC to AC inverters may not work with this unit.

The USC-II front panel USB Port can be connected to a PC to program settings using the ICMI USC-II Utility Suite. The control settings can also be entered manually. A 1GB USB Flash Drive with swivel will store up to twelve individual months of metered data/events when installed. ICMI proprietary Windows based software can be used to convert this data for comprehensive analysis.

The USC-II control plus various hinge/hardware and harness kits convert easily to all regulator types and minimizes stocking costs – they are identical to those used with UVR-1 control. The control is suited for all tap changer models including the newer Cooper “Quick Drives”.

USC-II is COPYRIGHT PROTECTED and is a proprietary technology control product of ICMI. It must not be duplicated, copied, reverse-engineered, or used in any form without first obtaining contractual permission from ICMI. ICMI reserves the right to modify this design specification in any way it sees fit to meet corporate goals.

USC-II has a standard 5-year limited warranty

USC-II Data and Event Logging with the DATA-PAK

Now available on the USC-II voltage regulator control is Data and Event Logging capablity using an external 1GB USB flash drive. After the DATA-PAK flash drive has been plugged into the front panel of the USC-II, it captures and stores both metered data and associated events in twelve (12) monthly files that are date and time stamped. Then after downloading onto a pc, ICMI developed Windows software translates and display this data as information in a user friendly format (see monthly file shown below). As an alternative this data can be transferred into Excel files for analysis by the customer. The control gathers data twice a second and logs this data every five (5) seconds along with any events that may have occurrred during the period. If not downloaded, eachnly files is successively over written following the 12 th month Data Logging

In addition to the above graphs and tables (shown in a clockwise direction) - up to 12 graphs with a scalable axis, a table of minimum and maximum values, and a table of events - is a listing of USC-II control settings (not shown). Metered data includes Load Volts, Load Center Volts, Load Amps, Phase Angle, Frequency, Tap Position, Operation Count, Power Factor, KVA, KW, and KVAR. Events would include a Tap Change, Power Flow Reversal, Voltage Limits, selected Alerts, and status of the removable USB drive as well as the Auto/Manual switch - all are date and time stamped.