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Astec Advanced Power Systems
UM5C06D ( 169-2071-504 )
Helios Rectifier 25/48 Single Phase -48V, 25 A
Power Factor Corrected Switch Mode Rectifier
NT5C06D
Installation and User Manual
P0831010 Standard 7.00 May 2001
Astec Advanced Power Systems
A part of Emerson Network Power
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Astec Advanced Power Systems Helios Rectifier 25/48 Single Phase -48V, 25A Power Factor Corrected Switch Mode Rectifier NT5C06D Installation and User Manual Manual Number : UM5C06D ( 169-2071-504 ) Manual Status : Standard Manual Issue : 7.00 Release Date : May 2001 P0831010 Copyright 2001 Astec Advanced Power Systems Ltd All Rights Reserved Published in Canada The information contained in this manual is the property of Astec Advanced Power Systems and is subjec
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5 Publication history May 2001 Standard issue 7.00. Manual modified to reflect the Emerson identity. ( EC 102-26438 ) September 1999 Standard 6.0. Document modified to be in accordance with Astec standards. (ECN 102-17331) May 1999 Standard 5.0. Document modified to reflect Astec identity. Figure 11 modified. (ECN 102-14852) March 1997 Std. release 4.0. New Float Voltage and Current Limit Factory Setting. August 1996 Std. release 3.0. Removal of extended temperature rectifier mode
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6 Publication history This page is left blank intentionally. UM5C06D ( 169-2071-504 ) P0831010 Standard 7.00 May 2001
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7 Contents Introduction.............................................................................................................. 11 Description.................................................................................................... 11 Applications .................................................................................................. 12 Equipment Identification.................................................................................. 12 MPS75 NT5C10C(X)
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8 Contents Forced Load Share ................................................................................................32 Load Share Adjustment Procedure ........................................................................32 Operation.................................................................................................................. 33 Front panel controls........................................................................................ 34 Features ..........
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Contents 9 RFA fault..............................................................................................................47 SEN FAIL fault......................................................................................................48 Erratic load fault...................................................................................................48 Current or voltage float fault ................................................................................48 Appendi
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10 Contents This page is left blank intentionally. UM5C06D ( 169-2071-504 ) P0831010 Standard 7.00 May 2001
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11 1. Introduction Description The NT5C06D Switch Mode Rectifier is rated for 25 A at -48 V DC. This rectifier incorporates AC input power factor correction circuitry, is highly efficient and lightweight (15 lbs.). It is fully connectorized and plugs into a power shelf into which up to three rectifiers can be installed. The rectifier is forced air cooled with air entering from the front and exhausting out the rear of the power shelf. Separate or common AC power feeds are connected to th
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12 Introduction Applications The rectifier is designed to function as the prime source of power for equipment requiring -48 V DC. It will also operate as a battery charger or as a battery replacement (batteryless operation). Its low output noise and good voltage regulation, combined with a 0.01% V coefficient for each degree C of temperature, provides an excellent charging facility to maintain a battery fully charged. The NT5C06D rectifier is designed to operate continuously in a small
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Introduction 13 Helios Rectifier 25/48 NT5C06D(X) –48 V / 25 A Switch Mode Rectifier The NT5C06D provides -48 V / 25 A of isolated, filtered, and regulated DC power from a single phase AC source, for powering a load while charging a positive grounded battery. The output voltage can be adjusted from 46.0 to 56.0 V for floating a 23 or 24 cell battery string. The rectifier is designed for automatic precharge upon insertion into the MPS75 power shelf. When the NT5C06D is plugged in
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14 Introduction Figure 2 - MPS75 Modular Power shelf- NT5C10C with 26-pin signal connectors Mounting Mounting holes (4) holes (4) Signal cable connection DC connection Figure 3 - NT5C06D Switch Mode Rectifier Height: 168 mm (6.60 inches) Depth: 260 mm (10.25 inches) Width: 149 mm (5.85 inches) Weight:6.8 kg (15 lbs) EQL FLT FAN HVSD ON RFA DC CC AC CA F1 OUTPUT 3MA 250V V+ LOA D V- CHARG E SO RTIE MPR25 MPR15 UM5C06D ( 169-2071-504 ) P0831010 Standard 7.00 May 2001
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15 2. Specifications Electrical specifications The NT5C06D rectifier operates within the electrical specifications listed in Table 1. (Refer to the Product Specification which can be obtained from the Engineering department of Astec Advanced Power Systems). Table 1 - Electrical specifications Input Voltage Rating: Nominal 208 / 240 V AC single-phase, 47-63 Hz. Input Voltage Range 176 to 264 V AC. Starting range 184 to 260 V AC. When three-phase 208 / 240 V AC source is available to po
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16 Specifications Table 1 - Electrical specifications ( continued ) A single pole 35 A circuit breaker is connected in series with the Output Protection: negative output lead of the rectifier. The rectifier contains an adjustable output current limit circuit for protection against damage from overloads. This circuit is factory set to limit the output current to 30 A. It can, however, be adjusted from 12.5 A to 30 A. At point of regulation: within ± 0.5% of the selected value for all
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Specifications 17 Environmental specifications Operating CAUTION An airflow clearance must be left at the rear of the shelf. A minimum of three inches is recommended. The rectifier will operate satisfactorily under the following environmental conditions: Temperature Range: 0° to +65° C (32° to 149° F) NT5C06DA/DB equipped without an air filter 0° to +50° C (32° to 122° F) equipped with an air filter Humidity: 0 to 95% RH (non-condensing) Altitude: Sea level to 21
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18 Specifications The rectifier contains aluminum electrolytic capacitors having a shelf life of 5 years or greater when stored at the maximum rated storage temperature. UM5C06D ( 169-2071-504 ) P0831010 Standard 7.00 May 2001
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19 3. Installation and start up The power shelf must be installed on the framework and all AC, DC and control and alarm wiring must be connected before the rectifiers are physically plugged in. Tools and test equipment The following tools and test equipment are required: • Screwdriver, flat blade (3/8-inch) • Screwdriver, flat blade (3/32-inch) • Screwdriver, Burns No. 60, or equivalent • Cable strippers / electrician’s knife • Wire stripper • Cable cutters (2/0) • Linesman’s pliers
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20 Installation and start-up Procedure 1 - Installing the power shelf Step Action 1 Position the power shelf, without any rectifiers plugged in, against the framework. 2 Secure the shelf in the position indicated by the job drawing (normally directly below the controller or another shelf). At least one star washer must be installed on one holding screw to ensure maximum framework ground continuity. 3 Release the clamping bar from the front of the power shelf 4 Remove the AC and DC ju
