AC Regulation

Digital Equipment Corporation H7318-AJ
Power Conditioning System Plus

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(PS) H7318-AJ

Digital Equipment Corporation H7318-AJ Power Conditioning System Plus.

The PCS+ provides voltage regulation, power conditioning and distribution of AC power for small to medium-sized computer systems.  It can be configured to monitor and display both internal and external failure or status information.  Includes lighted indicators as well as an LCD display to show status of the unit.  It can also be connected to a standard terminal to display the contents of the display.  Also includes a 40 column printer to produce hard copy of alarm conditions or probe status.  Unit contains logic circuits to monitor up to 43 internal and 69 external probe sensors.

When a failure occurs the unit can be programmed to generate an alarm, energize one or more of three logical relays, or cause an emergency shutdown of the system.  There is a front panel bypass switch.

The PCS+ has input circuit breakers, filtering, voltage regulation and output distribution facilities.  This consists of transient overvoltage protection and over current protection via circuit breakers. 

Each phase of the input is regulated separately by automatic selection of the input taps in the isolation transformer.  Tap selection is accomplished by the control logic modules which sense line voltage changes and select SCR driver modules which select transformer taps.  There are seven taps for each input phase leg to adjust voltage.

Removed from service. Comes with full installation instructions, programming and operating manual.

Input: 208v AC 3 phase
Output: 120 / 208v AC, 50 kva, 60 Hz
Dimensions: 31"W x 36"D x 42"H
Weight: 930 lbs
$2,995 each

Voltage Stabilizer - 16.6 kva
Series III - Single Phase

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(EQP) EMT4115B

Superior Electric Company voltage stabilizer. This is a motorized variac driven constant voltage supply with an adjustable output. Factory set is on 115v but can be trimmed 110 - 120v. This protects from brown outs and voltage swings from 95v AC to 135v AC and delivers a constant output. Meter on front panel monitors set points. These units are removed from service in working condition.

Output Amps: 16.6 kva
Nominal Output: 115v
Frequency: 50 / 60 Hz
Output Range: 110v to 120v
Input range for Nominal Output: 95 - 135v
Dimensions: 21-3/4"W x 19-1/4"H x 17-1/2"D
$625 each

Topaz AC Line Regulator
117v ±7%

(TP) 77104

Topaz AC line regulator. 4 kva, 48 amp. 3 foot, 12/3 cords. Removed from service, very clean. Wired with On/Off switch; 3 foot, 12/3 input/output cords. No plug or receptacle.

Input: 85 - 125v @ 47 - 63 Hz
Output: 117v ±7%
Dimensions: 7-1/2" x 11" x 6-1/2"H
$995 each

Topaz AC Line Regulator
117v ±7%

(TP) 77104P

Topaz AC line regulator. 4 kva, 48 amp. Same specs as (TP) 77104 (left) except this unit is switched, has GFI outlet and 6 foot input cord.

Input: 85 - 125v @ 47 - 63 Hz
Output: 117v ±7%
Dimensions: 7-1/2" x 11" x 6-1/2"H
*** SOLD OUT ***
SOLA Constant Voltage Filament Transformer
6v AC @ 2.5 amp

(TP) 30488

SOLA constant voltage filament transformer. New-very old stock.

Input: 95 - 125v, 60 Hz
Output: 6v AC @ 2.5 amp
Dimensions: 2-5/8" x 5-1/2" x 3-1/2"H
$10 each
Topaz Line 1® Power Converter
120v @ 1000 va

(TP) 52492-00Q3

Topaz Line 1 power converter. Constant voltage transformer. Currently wired for 115v. Used, clean, minor scratches.

Input: 100 / 120 / 200 / 208 / 220 / 230 / 240
RMS Input: 10.6 amps max
Output: 1000 va
Dimensions: 15" x 8-1/2" x 7"H
$399

Staco Automatic
Voltage Regulator

(EQP) AVR12057BR

BRAND NEW IN THE BOX Staco AVR12057BR smooths out flucuating, unstable voltage. It is a single phase line voltage regulator comprised of a motor driven variable transformer, a buck-boost fixed ratio transformer, a Solid State electronic control unit and associated front panel controls and voltmeter which displays the regulated output voltage. The terminal block for input and output connections is mounted on the back of the unit next to the ground lug and fuse.

Frequency range: 47-63 Hz.
Input volts: 95-135v AC
• Output voltage in fully adjustable and settable to ANY voltage between 110-120v AC! Nominal output is 115 volts.
Output amps: 57 amps, 6.6 kva
Accuracy is 0.75%
Correction Rate is 0.075 sec/volt
Meter Scale is 0-150 volts. Complete with installation and operating instructions.
Dimensions: 10-1/2" high. Fits 19" rack.
• OEM over $3,000
$975 each

Constant Voltage Transformer
Input: 95 to 125v
Output: 115v @ 60 Hz

(PS) 30986

Sola constant voltage transformer. 15 va, 0.13 amps.

Input: 95 to 125v
Output: 115v @ 60 Hz
Dimensions: 3-3/4" x 5" x 2-1/2" deep
$19 each

Ultra High Efficiency
AC Line Regulator
Adjustable 100 to 120v set @ 112v

(TP) MPS5005P-1K-110

Power Matic ultra high efficiency AC line regulator. 1 kva, 10 amp. 1/2 cycle response. No distortion or spikes. 98% - 99% efficiency. 47 - 70 Hz. New in the box!

Input: 110v nominal -15% / +17.5%
Output: Adjustable 100-120v set @ 112v
$475 each

Sine Wave Inverter &
Transfer Switch


(PS) RS400

Xantrax sine wave inverter & transfer switch. 400 watts. Draws 40 amps to 80 amps peak @ 10.3 - 15.3v DC. Output: 120v AC RMS, 60 Hz. GFI protected. Surge: 800 watts output. 3.7" x 7.4" x 13.5". Weighs 10 lbs.
$295 each

Sola Constant Voltage Transformer
120v @ 150 va / 60Hz

(TP) 20-13-115

Sola constant voltage transformer. New, old stock.

Input: 95 - 130v
Output: 120v @ 150va, 60Hz
Dimensions: 4-1/4" x 8-3/4" x 7-1/2"H
$99 each - $89 (3+)

Sola Constant Voltage Transformer
120v @ 22.4 amps, 2000 va

(PS) 63-13-220

Sola constant voltage transformer. NEMA L5-30 receptacles on back. AC line cord input. New, never used but shows some shelf wear. On a rolling cart.

Input: 95 - 130v
Output: 120v @ 22.4 amps, 2000 va
Dimensions: 11" x 17" x 13"H
$1,125 each

Sola Constant
Voltage Supplies

(TP) 23-25-210

Sola constant voltage supply, 1000 va. New, shelf worn.

Input: 95 - 130 / 175 / 190 - 260v
Output: 120 / 240v @ 60 Hz
Dimensions: 16-1/2" x 7-3/4" x 6-1/2"H,
7" x 9" mounting base
$650 each

(TP) 23-25-215

Sola constant voltage supply. Input 95-130v; 175-235v; 190-260v. Output 120/240v. NOS (New Old Stock). Used.
$1,795 each

Sola Constant
Voltage Supplies

(TP) 63-150-80023

Sola constant voltage supply. 500 va. Used, but in excellent condition. Also known as 63-23-150-8.

Input: 95 - 130v / 175 - 235v /
190 - 260v / 380 - 520v
Output: 120 / 240v, 500va
Dimensions: 13" x 8" x 7"H
$350 each

Sola Constant Voltage Supply
120 x 240v, 3000 va

(PS) 63-25-230-3

Sola constant voltage power supply. New, never used. Includes manual.

Input: 95 - 130 / 175 - 235 / 190 - 260
Output: 120 x 240v, 3000 va
Dimensions: 10-1/2" x 20" x 9"
Weight: 194 lbs
$2,585 each

Sola Constant Voltage X-mer
120 x 240v, 60 Hz, 2000 va

(PS) 23-25-220

Sola constant voltage transformer. New, never used. Includes manual.

Input: 95 - 130 / 175 - 235 / 190 - 260
Output: 120 x 240v, 60 Hz, 2000 va
Dimensions: 10-1/2" x 20" x 9"
Weight: 97 lbs
$2,175 each

300 Watt
DC to AC Inverter

(EQP) AR-280

Scientific Radio 300 watt inverter was included in the new finished products inventory when we acquired company. This is the finest grade invertor available and has pure sine wave output to operate sensitive electronic equipment.

Separately fused AC & DC inputs as well as AC output. Charges battery system when in standby mode.

Current draw under normal conditions: 5 amps, 115v AC / 3 amps, 230v AC
DC input: 12.5v DC @ 30 amps / 24v DC @ 15 amps / 32v DC @ 10 amps
Dimensions: 7-1/4" x 7-1/2 x 12"L
$395 each

UPS
41.6 amps - 8 Hours

(PS) 153-3A-136

Elgar uninterruptable power supply. In it's day, delivered 41.6 amps of current for up to 8 hours. Includes static by pass switch.

This UPS is designed to be on-line 100% of the time, supplying all system power. In this mode, there is no switch over time because you are on-line. This is the preferred mode, but power consumption is slightly higher than running on standby (i.e. 0.68 amps input, 41 amps output). Optionally, it can be run in switch mode and come on-line quickly in the event of a brown/black out.

Input: 120 / 208v, 3 phase @ 68 amps
Output: 120 / 208v, 3 phase @ 41.6 amps max
Dimensions: The main cabinet is 76.5" high x
55" wide x 19" deep
Weight: 2,250 lbs
This system was removed from service in working condition in 1997. Included is a "load" for testing off line. This consists of an electric furnace on casters, with a cord that plugs directly into UPS. Also included are spare parts and manuals. Shipping, moving, crating etc... is the responsibility of purchaser. Batteries are no longer part of this system.
$1,500 each

Sola Uninterruptable
Power Supplies

(PS) SPS-300A

360va, 120v Sola UPS battery back-ups. Sold as is, where is. Need batteries + ?. Save big bucks. This unit can be modified to run as a 115v inverter. 12v card input, 115v 300w out.
$19.95 each

Sola Uninterruptable
Power Supplies (cont'd)

(PS) SPS-800A

800va, 120v Sola UPS battery back-ups. Sold as is. Need batteries + ?. Save big bucks.
$59 each

(PS) SPS-R1000A

1000va, 120v Sola UPS battery back-ups. Sold as is. Need batteries + ?. Save big bucks.
$79 each