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Elgar CW 1251M Operation Manual

Cw-m series
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®
ELGAR ELECTRONICS CORPORATION
9250 Brown Deer Road
San Diego, CA 92121-2294
1-800-733-5427
Tel: (858) 450-0085
Fax: (858) 458-0267
Email: sales@elgar.com
www.elgar.com
This document contains information proprietary to Elgar Electronics Corporation. The information contained herein is
not to be duplicated or transferred in any manner without prior written permission from Elgar Electronics Corporation.
March 8, 2002
Advanced Test Equipment Rentals
www.atecorp.com 800-404-ATEC (2832)
CW-M SERIES
AC POWER SOURCE
Operation Manual
This manual covers models:
CW 801M
CW 1251M
CW 2501M
©2002 by Elgar Electronics Corporation
Document No. M161570-01 Rev E

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  • Page 1 ©2002 by Elgar Electronics Corporation This document contains information proprietary to Elgar Electronics Corporation. The information contained herein is not to be duplicated or transferred in any manner without prior written permission from Elgar Electronics Corporation. March 8, 2002 Document No. M161570-01 Rev E...
  • Page 5 Elgar non-warranty service rates. • Warranty field service is available on an emergency basis. Travel expenses (travel time, per diem expense, and related air fare) are the responsibility of the Buyer. A Buyer purchase order is required by Elgar prior to scheduling. •...
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  • Page 7 All the safety instructions and advice notes are to be followed. Neither Elgar Electronics Corporation, San Diego, California, USA, nor any of the subsidiary sales organizations can accept any responsibility for personnel, material or inconsequential injury, loss or...
  • Page 8 SAFETY SYMBOLS Protective Conductor Terminal CAUTION Risk of Electrical Shock Direct Current (DC) CAUTION Refer to Accompanying Documents Alternating Current (AC) Off (Supply) Three–Phase Alternating Current Standby (Supply) Fuse On (Supply) Earth (Ground) Terminal...

  • Page 9: Table Of Contents

    Elgar CW-M Series CONTENTS INTRODUCTION ............... 1 SPECIFICATIONS ............. 3 Output......................3 Current .......................3 Measurement....................4 Front Panel ....................4 Rear Panel Connections................6 Input ......................6 General.......................7 Options and Accessories ................8 INSTALLATION ..............9 Unpacking ....................9 Wire Gauge Selection................10 Mounting Instructions ................13 Cooling .....................13 Power In Connections ................18...
  • Page 10 Figure 1–1 ContinuousWave (Model CW1251M) Front Panel........1 Figure 3–1 Slide Mounting....................13 Figure 3–2 Mounting Dimensions, Front and Rear Views (CW 801M, CW 1251M) ..14 Figure 3–3 Mounting Dimensions, Front and Rear Views (CW 2501M) .......15 Figure 3–4 Mounting Dimensions, Top and Side Views (CW 801M, CW 1251M) ..16 Figure 3–5 Mounting Dimensions, Top and Side Views (CW 2501M) ......17...

  • Page 11: Introduction

    Elgar CW-M Series INTRODUCTION Elgar's ContinuousWave™ (CW) Series power sources deliver up to 1250 VA in a 2U high (3.5 inches) rackmount chassis, and 2500 VA in a 5.25 inch chassis. This low profile design is also suitable for benchtop use. The CW Series models have three power ratings: 800 VA, 1250 VA, and 2500 VA.
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  • Page 13: Specifications

    CW 801M: 6.00 ARMS in 135 VAC range or 3.00 ARMS in 270 VAC range CW 1251M: 9.40 ARMS in 135 VAC range or 4.70 ARMS in 270 VAC range CW 2501M: 18.60 ARMS in 135 VAC range or 9.30 ARMS in 270 VAC range...

  • Page 14: Measurement

    Resolution of Display: 0.1V Current Range: 0 to 6.0 ARMS (CW 801M) 0 to 9.4 ARMS (CW 1251M) 0 to 18.6 ARMS (CW 2501M) Accuracy: ±2% of range for linear loads with current >0.2A for CW 801M and CW 1251M, >0.4A for CW 2501M Resolution of Display: 0.1A...
  • Page 15 Elgar CW-M Series Meter Select switch: Current/frequency select Output Voltage: Adjusted using 10–turn potentiometer Output Current: Adjusted using 10–turn potentiometer Output Frequency: Adjusted using 10–turn potentiometer Overvoltage Protection: Settable 5 to 300 VRMS using a 15–turn screwdriver adjust potentiometer Displays Voltage: 4–digit, 7–segment large, green LED display...

  • Page 16: Rear Panel Connections

    Voltage and Frequency CW 801M: 90 to 264 VAC, 47 to 63 Hz, single-phase CW 1251M: 103 to 264 VAC, 47 to 63 Hz, single-phase CW 2501M: 180 to 264 VAC, 47 to 63 Hz, single-phase Neutral should be connected to ground at building entrance...

  • Page 17: General

    CW 801M: 3.5" H (89 mm) x 19" W (483 mm) x 20.6" D (524 mm) CW 1251M: 3.5" H (89 mm) x 19" W (483 mm) x 20.6" D (524 mm) CW 2501M: 5.25" H (133 mm) x 19" W (483 mm) x 20.6" D (524 mm) Weight CW 801M: 48 lbs.

  • Page 18: Options And Accessories

    Elgar CW-M Series 2.8 Options and Accessories L: Locking knobs (front panel potentiometers) Rack Slide Kit (Elgar part number K161570-01) Parallel Cable (Elgar part number 890-497-40)

  • Page 19: Installation

    In addition, the shipping container(s) and filler material should be saved for inspection. Forward a report of damage to the Elgar Service Department. Elgar will provide instructions for repair or replacement of the instrument.

  • Page 20: Wire Gauge Selection

    Thus, this guide applies equally to the input cable and output cable for this Elgar instrument and application loads. Power cables must be able to safely carry maximum load current without overheating or causing insulation destruction.
  • Page 21 Elgar CW-M Series The following notes apply to Table 3–1 and to the power cable definition: The above figures are based upon insulated copper conductors at 25 C (77 F), two current carrying conductors in the cable plus a safety (chassis) ground.
  • Page 22 Capability 3 to 6 Above 6 The preferred insulation material is application dependent. Elgar's recommend- ation is any flame retardant, heat resistant, moisture resistant thermoplastic insulation rated to a nominal 75ºC (167ºF). Voltage breakdown must exceed the combined effects of: •...

  • Page 23: Mounting Instructions

    The units are 3.5" and 5.25" (89 mm and 133 mm) high, and are designed to be installed in a standard 19" (483 mm) RETMA rack. Pem-nuts have been built into the chassis for mounting optional slides. The CW mounting kit, Elgar part number K161570-01, contains the appropriate slides and mounting brackets.

  • Page 24: Figure 3-2 Mounting Dimensions, Front And Rear Views (Cw 801M, Cw 1251M)

    Elgar CW-M Series Figure 3–2 Mounting Dimensions, Front and Rear Views (CW 801M, CW 1251M)

  • Page 25: Figure 3-3 Mounting Dimensions, Front And Rear Views (Cw 2501M)

    Elgar CW-M Series Figure 3–3 Mounting Dimensions, Front and Rear Views (CW 2501M)

  • Page 26: Figure 3-4 Mounting Dimensions, Top And Side Views (Cw 801M, Cw 1251M)

    Elgar CW-M Series Figure 3–4 Mounting Dimensions, Top and Side Views (CW 801M, CW 1251M)

  • Page 27: Figure 3-5 Mounting Dimensions, Top And Side Views (Cw 2501M)

    Elgar CW-M Series Figure 3–5 Mounting Dimensions, Top and Side Views (CW 2501M)

  • Page 28: Power In Connections

    Elgar CW-M Series 3.5 Power In Connections Connect input power to the INPUT terminal block on the rear panel as specified below. Refer to Figure 3–6. Figure 3–6 Input Power Connections WARNING! For input voltages >120V, do not reverse LINE and NEUT.

  • Page 29: Table 3-2 Recommended Cables

    International CW 801M 18A/300V, 3x14 AWG 16A/300V, 3x1.5 mm O.D.= 9.6 mm O.D.= 8.0–9.8 mm VDE CW 1251M and CW 2501M 25A/300V, 3x12 AWG 25A/300V, 3x25 mm O.D.= 11.3 mm O.D.= 9.6–12.0 mm VDE Table 3–2 Recommended Cables WARNING! To protect the operator, the wire connected to the GND terminal must be connected to earth ground.

  • Page 30: Power Out Connections

    Elgar CW-M Series 3.6 Power Out Connections 1. Remove the protective cover from the terminal block. 2. A factory jumper has been added to connect NEUTRAL to GROUND. If the front connector requires LINE and NEUTRAL to be reversed, move this jumper to connect LINE to GROUND.

  • Page 31: Sense Connections

    Elgar CW-M Series 3.7 Sense Connections The CW Series unit can be used with or without remote sense leads connected to the load. Where the sense leads (line and neutral sense) are connected determines the point at which the CW output voltage will be precisely regulated.

  • Page 32: Figure 3-9 Sense Connections

    Elgar CW-M Series To utilize remote sensing at the user's load, follow these steps: 1. Remove the protective cover from the terminal block. 2. Route the cables through the strain relief device located above the terminal block. Twisted shielded leads for power and sense leads are recommended for the lowest noise operation.

  • Page 33: Parallel Connected Units

    Connect the master unit’s sense leads either locally or to the load. Do not make any connection to the slave unit’s SENSE terminals. In addition to the connections just defined, connect a cable (Elgar part number 890-497-40) from the master’s rear panel connector labeled SLAVE OUT to the slave rear panel connectors labeled SLAVE IN.
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  • Page 35: Set-Up

    Elgar CW-M Series SET-UP Once installation is complete and all cable connections are secure, check the settings on the 12-position CONFIG dipswitch located on the rear panel. Refer to Figure 4–1. Configure the switch prior to applying unit power. Figure 4–1 CW Rear Panel 4.1 CONFIG Dipswitch...

  • Page 36: Setting The Config Dipswitch

    Elgar CW-M Series Switch Position Function Required to enable current master and slave operation Stand-alone unit or phase slave Current slave Current master Phase slave Phase master Output disabled at power-up, Fault LED lit Note: If the output switch is in the ON position at power-up,...

  • Page 37: Parallel And Multiphase Configurations

    Elgar CW-M Series 4.3 Parallel and Multiphase Configurations To operate parallel and/or multiphase configurations, set the switches, cables, and wiring as shown in the examples below. 4.3.1 Setup for Three-Phase, Two Paralleled per Phase Configuration...
  • Page 38 Elgar CW-M Series 4.3.2 Setup for Six in Parallel Configuration...
  • Page 39 Elgar CW-M Series 4.3.3 Setup for Six-Phase Configuration...
  • Page 40 Elgar CW-M Series 4.3.4 Setup for Two-Phase Configuration...

  • Page 41: Setting The Phase Angle

    Elgar CW-M Series 4.3.5 Setup for Three-Phase Configuration 4.4 Setting the Phase Angle For multiphase operation, set switches 9 through 12 for the desired phase angle as specified in the table below. Lagging Phase Angle Switch 9 Switch 10 Switch 11 Switch 12 “A”...
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  • Page 43: Operation

    Elgar CW-M Series OPERATION The controls and indicators for the CW series power source are detailed below. Refer to Figure 5–1. Figure 5–1 CW Front Panel Controls POWER SWITCH Press the top portion of the switch to turn power on, press the bottom portion of the switch to turn the power supply off.
  • Page 44 Elgar CW-M Series NUMERIC DISPLAY. This large, four-digit display, located in the voltage cluster, is a digital voltmeter that measures and displays the power supply’s output voltage. If the power supply is operating, but the output power is turned off, then this meter displays the voltage that the output will assume when it is turned on.

  • Page 45: Parallel And Multiphase Operation

    Elgar CW-M Series FAULT LAMP When lit, this lamp indicates that a fault condition has been detected, and that the system output has been turned off automatically. Some conditions that cause this to occur include: output over-voltage, output over-current, high internal temperature, changing the output voltage range while the output is turned on, starting the system with the output turned on and the unit in power up to zero volts mode, or an internal system failure.

  • Page 46: Remote Control Signals

    Elgar CW-M Series • Phase slaves display their phase angle instead of frequency. The phase master displays the system frequency. • Each unit in the configuration monitors and displays its own load current. Voltage is displayed only on the master; voltage is blanked out on the current slaves.

  • Page 47: Maintenance

    Elgar CW-M Series MAINTENANCE 6.1 Periodic Service No routine maintenance on the CW Series unit is required, aside from periodic cleaning. Once a unit is removed from service, it may be cleaned with isopropyl alcohol (or an equivalent solvent) on the metal surfaces, and a weak solution of soap and water on the front panel.
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This manual is also suitable for:

Cw 801mCw 2501m

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