MODEL 1654 DC-AC INVERTER ELECTRONICS CO., INC. P. O. Box 1329, Hillsborough, N. C. 27278, U.S.A. BULLETIN NO. 4042 1000-VA DC-TO-AC INVERTERS 120-VAC, 60-HZ OUTPUT Model 1654-48-120-60-U The Model 1654 rack-mount inverter provides 1000 volt-amperes of FEATURES 120-Vac, 60-Hz output power in only 3.5 inches of vertical rack space. • HEIGHT 3.5 IN. Standard versions allow operation from 24-Vdc, 48-Vdc or 130-Vdc battery sources. The well-regulated, frequency-stable quasi-sine- • WEIGHT 16 LBS. wave output is well-suited for powering sensitive telecommunications and data processing equipment, and in addition, is compatible with • 86%-92% EFFICIENT many loads normally considered difficult for inverters, including • WELL-REGULATED, switch-mode power supplies, small motors and other nonlinear loads. FREQUENCY-STABLE OUTPUT Applications, therefore, include powering almost any critical industrial or telecommunications equipment within the volt-ampere rating of • HIGH PEAK-CURRENT CAPABILITY this inverter. FOR DIFFICULT LOADS Conservatively designed and lightweight, this highly efficient • CONVECTION COOLED inverter will operate continuously at any load within its rating over its full operating temperature range with simple convection cooling. The • AVAILABLE WITH INTEGRAL Model 1654 is available as a plain inverter or with integral automatic HIGH-SPEED TRANSFER CIRCUITS load switchover features to permit operation in “standby” or “on-line” (INVERTER-TO-LINE OR LINE-TO- INVERTER OPTIONS) UPS modes. Table 1 Nominal Input Input Current Input Current Heat Model 1 2 2 2 Input Voltage Voltage Range No Load Full Load Efficiency Dissipation 3 Number (VDC) (VDC) (ADC) (ADC) (Btu/hour) 24 21-29 0.33 55.0 87% 529 1654-24-120-60 48 42-58 0.16 26.9 88% 443 1654-48-120-60 130 105-140 0.09 10.5 91% 350 1654-130-120-60 1 Typical at no load and nominal input voltage 2 Typical at full load and minimum input voltage 3 See reverse side for complete model numbering information DESIGNERS AND MANUFACTURERS OF SOLID-STATE POWER CONVERSION EQUIPMENT SPECIFICATIONS Top View Input Voltage and Current The nominal input voltage, the input voltage range and input current are shown in Table 1. Output Voltage 120 Vac nominal, single phase (as measured with a true-rms voltmeter) Frequency 60 Hz nominal. ±0.15 Hz maximum variation over the full range of load and input-voltage changes. Volt-Ampere Rating 1000 VA Output Voltage Regulation ±3.0% versus dc input line and output load Output Voltage Wave Shape Three-level stepped approximation to a sine wave with regulated peak and rms voltages. C-Message-Weighted Noise Rear View Noise fed back to a typical stationary (Cover Panel Removed) battery source is less than 32 dBrnC. Figure 1. Outline dimensions. Inverter shown is U or L version. Temperature Range Operating: 0°C to +50°C Storage: -40°C to +85°C Standard Configurations except that, in the L configuration, Protection the load power is normally provided Protection against short-term overloads P VERSION: Adding the suffix P to the by the commercial ac line and the basic model designates a plain inverter, and accidental short-circuit of the inverter operates in the standby mode. output is provided electronically, and i.e. a unit with no internal inverter-to- Other features such as transfer speed, line or line-to-inverter transfer switching recovery is automatic upon removal of alarms, indicators, etc. are the same as the abnormal load. provisions. (“Line” refers to commercial in the U version. ac power.) This version does not Output overloads and short circuits have the three front-panel LED status lasting more than about 10 seconds Mechanical Description indicators, ac-line fuse or alarm will trip the front-panel circuit breaker, Figure 1 provides overall dimensions. contacts. which is in series with the dc input. This Weight is approximately 16 lbs. circuit breaker also provides protection U VERSION: Adding the suffix U to the Brackets are provided for 19-inch or basic model number designates the against accidental reversal of the input- 23-inch rack mounting. A cover plate voltage polarity during installation. inverter-preferred UPS configuration. protects the recessed rear-panel wiring In this configuration, the load power For 48Vdc-input inverters, this circuit connections. Standard paint color breaker is standardly provided in the is normally provided by the inverter. (front and sides) is light gray (ANSI-61). However, if the inverter output is negative dc-power input line; for 24Vdc- input and 130Vdc-input inverters, this interrupted, an internal transfer switch Model Numbering Information automatically transfers the load from circuit breaker is standardly provided in For ordering purposes the Model 1654 the positive dc-power input line. the inverter to commercial ac power. should be identified by an expanded The transfer time between inverter and model number consisting of four The inverter will automatically shut line is short (2 msec. typical), and such numbers followed by a letter suffix. In down if subjected to a dc-input transfers are normally not detected sequence, these designate: undervoltage. Return to normal by even highly sensitive loads. Upon • basic 1000 VA inverter type (1654) operation is automatic upon restoration restoration of inverter power, there is • nominal input voltage (24, 48 or 130) of input voltage. Excessively high dc- a delay of approximately four seconds • nominal output voltage (120) input voltages will trip the front-panel before transfer back to inverter power. • output frequency (60) circuit breaker. This version includes auxiliary Form C • configuration (P, U or L version) contacts for remote indication of alarm For example, the correct part number Front-Panel Controls and Indicators conditions, three front-panel LED status for a 48-volt input, inverter-preferred A combination circuit breaker and ON/ indicators and an ac-line fuse. UPS configuration is Model 1654-48- OFF switch is provided for input power. 120-60-U. L VERSION: Adding the suffix L to the L and U versions include an ac-line fuse and three LED status indicators. basic model number designates a unit Specifications subject to change without notice. which is identical to the “U” version WILMORE ELECTRONICS COMPANY, INC. P. O. Box 1329, Hillsborough, N. C. 27278 • Telephone (919) 732-9351 • FAX (919) 732-9359 www.wilmoreelectronics.com