California Instruments 2750L-P Series User manual

Revision K
August 2001
Copyright © 1995 -2001
By California Instruments
All rights reserved
P/N 4009-316
INSTRUCTION MANUAL
2750L-P/ 4500L-P / 6000L-P

INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P
August, 2001 Rev. K
-ii-
TABLE OF CONTENTS
SECTION 1 INTRODUCTION AND SPECIFICATIONS----------------------------------------------------------------------1
1.1 INTRODUCTION--------------------------------------------------------------------------------------------------------------1
1.2 GENERAL DESCRIPTION -------------------------------------------------------------------------------------------------1
1.3 ACCESSORY EQUIPMENT/RACK SLIDES ---------------------------------------------------------------------------3
1.4 SPECIFICATIONS------------------------------------------------------------------------------------------------------------3
SECTION 2 INSTALLATION AND ACCEPTANCE ------------------------------------------------------------------------- 13
2.1 UNPACKING ----------------------------------------------------------------------------------------------------------------- 13
2.2 POWER REQUIREMENTS----------------------------------------------------------------------------------------------- 13
2.3 MECHANICAL INSTALLATION ----------------------------------------------------------------------------------------- 13
2.4 INPUT WIRING-------------------------------------------------------------------------------------------------------------- 13
2.5 OUTPUT CONNECTIONS------------------------------------------------------------------------------------------------ 20
2.6 OUTPUT VOLTAGE RANGES ------------------------------------------------------------------------------------------ 20
2.7 FUNCTION TEST----------------------------------------------------------------------------------------------------------- 20
2.8 REAR PANEL DIP SWITCH (SW1) ------------------------------------------------------------------------------------ 21
SECTION 3 OPERATION ---------------------------------------------------------------------------------------------------------- 24
3.1 GENERAL -------------------------------------------------------------------------------------------------------------------- 24
3.2 FRONT PANEL CONTROLS -------------------------------------------------------------------------------------------- 24
3.3 FRONT PANEL INDICATORS------------------------------------------------------------------------------------------- 24
3.4 REAR PANEL CONNECTIONS ----------------------------------------------------------------------------------------- 26
3.5 FRONT PANEL PROGRAMMING-------------------------------------------------------------------------------------- 31
3.6 TO MEASURE THE OUTPUT ------------------------------------------------------------------------------------------- 46
3.7 REMOTE PROGRAMMING WITH ABBREVIATED PLAIN ENGLISH (APE)-------------------------------- 47
3.8 REMOTE OPERATION WITH MATE CIIL---------------------------------------------------------------------------- 67
SECTION 4 CALIBRATION PROCEDURE ------------------------------------------------------------------------------------ 82
4.1 GENERAL -------------------------------------------------------------------------------------------------------------------- 82
4.2 TEST EQUIPMENT--------------------------------------------------------------------------------------------------------- 83
4.3 PERIODIC CALIBRATION------------------------------------------------------------------------------------------------ 88
4.4 NONPERIODIC CALIBRATION ----------------------------------------------------------------------------------------- 96
SECTION 5 THEORY OF OPERATION---------------------------------------------------------------------------------------105
5.1 GENERAL -------------------------------------------------------------------------------------------------------------------105
5.2 OVERALL DESCRIPTION-----------------------------------------------------------------------------------------------105
5.3 INPUT POWER SUPPLY ------------------------------------------------------------------------------------------------105
5.4 AUXILIARY POWER SUPPLY -----------------------------------------------------------------------------------------107
5.5 CURRENT LIMIT BOARD -----------------------------------------------------------------------------------------------107
5.6 INDICATOR BOARD------------------------------------------------------------------------------------------------------107
5.7 RANGE RELAY BOARD -------------------------------------------------------------------------------------------------107
5.8 AMPLIFIER MODULES --------------------------------------------------------------------------------------------------107
5.9 OSCILLATOR MODULE -------------------------------------------------------------------------------------------------108
5.10 CPU/GPIB BOARD --------------------------------------------------------------------------------------------------------108
5.11 PHASE A/REF BOARD---------------------------------------------------------------------------------------------------109
5.12 PHASE B/C BOARD ------------------------------------------------------------------------------------------------------109
5.13 DISPLAY MODULE -------------------------------------------------------------------------------------------------------109
SECTION 6 MAINTENANCE AND TROUBLESHOOTING---------------------------------------------------------------111
6.1 GENERAL -------------------------------------------------------------------------------------------------------------------111
6.2 POOR VOLTAGE ACCURACY ----------------------------------------------------------------------------------------111
6.3 POOR OUTPUT VOLTAGE REGULATION-------------------------------------------------------------------------111
6.4 OVERTEMPERATURE LAMP ON-------------------------------------------------------------------------------------111
6.5 OVERLOAD LAMP ON---------------------------------------------------------------------------------------------------112
6.6 CAN'T PROGRAM AC POWER SYSTEM ON GPIB -------------------------------------------------------------112
6.7 DISTORTED OUTPUT ---------------------------------------------------------------------------------------------------112

INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P
August, 2001 Rev. K
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6.8 NO OUTPUT ----------------------------------------------------------------------------------------------------------------113
6.9 MODULE REMOVAL------------------------------------------------------------------------------------------------------113
6.10 OSCILLATOR MODULE REMOVAL/REPLACEMENT-----------------------------------------------------------113
6.11 AMPLIFIER REMOVAL/REPLACEMENT ---------------------------------------------------------------------------114
SECTION 7 REPLACEABLE PARTS------------------------------------------------------------------------------------------117
7.1 GENERAL -------------------------------------------------------------------------------------------------------------------117
7.2 ORDERING INFORMATION --------------------------------------------------------------------------------------------117
SECTION 8 MIL-STD-704D-------------------------------------------------------------------------------------------------------119
8.1 GENERAL -------------------------------------------------------------------------------------------------------------------119
8.2 INITIAL SETUP-------------------------------------------------------------------------------------------------------------119
8.3 TEST PERFORMED ------------------------------------------------------------------------------------------------------119
8.4 KEYPAD ENTRY (Refer to page 31 for Keyboard flow chart) -------------------------------------------------120
8.5 GPIB OPERATION (Refer to page 150 for syntax diagram) ---------------------------------------------------122
8.6 TEST SPECIFICATION --------------------------------------------------------------------------------------------------122
SECTION 9 2-PHASE OPTION (2P)--------------------------------------------------------------------------------------------135
9.1 GENERAL -------------------------------------------------------------------------------------------------------------------135
SECTION 10 RTCA/DO-160C---------------------------------------------------------------------------------------------------137
10.1 GENERAL -------------------------------------------------------------------------------------------------------------------137
10.2 INITIAL SETUP-------------------------------------------------------------------------------------------------------------137
10.3 TEST PERFORMED ------------------------------------------------------------------------------------------------------137
10.4 KEYPAD ENTRY (Refer to Figure 1 for Keyboard Flow Chart) ------------------------------------------------137
10.5 GPIB OPERATION --------------------------------------------------------------------------------------------------------139
10.6 TEST SPECIFICATION --------------------------------------------------------------------------------------------------140
LIMITED WARRANTY ------------------------------------------------------------------------------------------------------------------147

INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P
August, 2001 Rev. K
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TABLE OF TABLES
Table 1-1: OUTPUT VA PER PHASE -----------------------------------------------------------------------------------------------1
Table 1-2 SPECIFICATIONS 4500L-P / 2750L-P / 6000L-P------------------------------------------------------------------ 4
Table 2-1 MAXIMUM LENGTH OF OUTPUT WIRES ------------------------------------------------------------------------ 20
Table 3-1 POWER OUTPUT TERMINAL BLOCK (TB1)--------------------------------------------------------------------- 26
Table 3-2 EXTERNAL SENSE CONNECTOR (J6)---------------------------------------------------------------------------- 26
Table 3-3 SYSTEM INTERFACE CONNECTOR (J7) ------------------------------------------------------------------------ 28
Table 3-4 KEYPAD KEY DESCRIPTION ---------------------------------------------------------------------------------------- 32
Table 3-5 OUTPUT PARAMETER SCREEN ----------------------------------------------------------------------------------- 33
Table 3-6 MEASUREMENT SCREENS------------------------------------------------------------------------------------------ 34
Table 3-7 CALIBRATION SCREEN ----------------------------------------------------------------------------------------------- 34
Table 3-8 CONFIGURATION SCREENS ---------------------------------------------------------------------------------------- 35
Table 3-9 FRONT PANEL DISPLAY ERROR MESSAGES----------------------------------------------------------------- 44
Table 3-10 COMMONLY USED GPIB ABBREVIATIONS--------------------------------------------------------------------- 49
Table 3-11 UNIT ADDRESS GROUP ---------------------------------------------------------------------------------------------- 50
Table 3-12 PROGRAM HEADERS-------------------------------------------------------------------------------------------------- 54
Table 3-13 TLK ARGUMENTS------------------------------------------------------------------------------------------------------- 62
Table 3-14 EXAMPLE TALK RESPONSE (3-PHASE SYSTEM)------------------------------------------------------------ 64
Table 3-15 STATUS BYTE VALUES ----------------------------------------------------------------------------------------------- 67
Table 3-16 CHANNEL DESIGNATORS AND NOUN MODIFIERS --------------------------------------------------------- 71
Table 3-17 NON-CNF STATUS MESSAGES ------------------------------------------------------------------------------------ 76
Table 3-18 DISCRETE FAULT INTERRUPT CONDITIONS ----------------------------------------------------------------- 80
Table 3-19 SAMPLE PROGRAMMING STRINGS ------------------------------------------------------------------------------ 81
Table 4-1 SETUP LOAD VALUES------------------------------------------------------------------------------------------------- 86
Table 4-1 SETUP LOAD VALUES (continued) -------------------------------------------------------------------------------- 87
Table 4-2 AMPLIFIER LOAD BALANCE ADJUSTMENTS ------------------------------------------------------------------ 99
Table 4-3 CURRENT LIMIT ADJUSTMENT -----------------------------------------------------------------------------------102
Table 6-1 TROUBLESHOOTING -------------------------------------------------------------------------------------------------111
TABLE OF FIGURES
Figure 1-1 MODEL 4500L / 2750L / 6000L-P OUTPUT DRAWINGS-------------------------------------------------------- 2
Figure 2-1 6000L / 2750L and 4500L-3P REAR PANEL CONNECTIONS ----------------------------------------------- 14
Figure 2-2 SYSTEM INTERCONNECT ------------------------------------------------------------------------------------------- 15
Figure 2-2 SYSTEM INTERCONNECT FOR MODE OPTION -------------------------------------------------------------- 16
Figure 2-2 SYSTEM INTERCONNECT ------------------------------------------------------------------------------------------- 17
Figure 2-2 SYSTEM INTERCONNECT ------------------------------------------------------------------------------------------- 18
Figure 2-3 FUNCTION TEST SETUP---------------------------------------------------------------------------------------------- 23
Figure 3-1 FRONT PANEL CONTROLS AND INDICATORS---------------------------------------------------------------- 25
Figure 3-2 REAR PANEL CONNECTIONS - 6000L/2750L/4500L --------------------------------------------------------- 27
Figure 3-3 FUNCTION STROBE CONNECTIONS----------------------------------------------------------------------------- 31
Figure 3-4 KEYPAD -------------------------------------------------------------------------------------------------------------------- 31
Figure 3-5 REMOTE COMMEND SEQUENCES ------------------------------------------------------------------------------- 52
Figure 3-6 CIIL PROGRAM SYNTAX---------------------------------------------------------------------------------------------- 69
Figure 3-7 CONFIDENCE TEST FLOW DIAGRAM---------------------------------------------------------------------------- 74
Figure 4-1 INTERNAL ADJUSTMENTS AND JUMPER LOCATIONS ---------------------------------------------------- 84
Figure 4-2 EQUIPMENT HOOKUP FOR PERIODIC CALIBRATION------------------------------------------------------ 90
Figure 4-3 FLOW DIAGRAM A REMOTE CALIBRATION-------------------------------------------------------------------- 94
Figure 4-3 FLOW CHART (continued)--------------------------------------------------------------------------------------------- 95
Figure 5-1 AC POWER SYSTEM BLOCK DIAGRAM ------------------------------------------------------------------------106
Figure 5-2 OSCILLATOR MODULE BLOCK DIAGRAM ---------------------------------------------------------------------108
Figure 6-1 MODULE LOCATION --------------------------------------------------------------------------------------------------115

INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P
August, 2001 Rev. K
SECTION 1 INTRODUCTION AND SPECIFICATIONS
1.1 INTRODUCTION
This instruction manual contains information on the installation, operation, calibration, and maintenance of all power
systems that use the 2750L-P,4500L-P and 6000L-P.
1.2 GENERAL DESCRIPTION
This power system is a high efficiency power source that provides a low distortion output. The output can be configured
in either a single or three-phase configuration.
A number of Power Sources can be configured to supply full output power up to 27000VA. Table 1-1 shows the output
VA per phase for each of the available power system models. The table also shows that increased power is available
at a reduced operating temperature of 35°C.
OUTPUT VA NUMBER
MODEL PER PHASE PHASES
50°C 35°C
2750L-1P 2700 3000 1
2750L-3P 900 1000 3
Number of
power sources
4500L-1P 1 4500 5000 1
4500L-3P 1 1500 1667 3
6000L-1P 1 5330 6000 1
6000L-3P 1 1770 2000 3
9000L/2-1P 2 9000 10000 1
9000L/2-3P 2 3000 3333 3
12000L-1P 2 10600 12000 1
12000L-3P 2 3540 4000 3
13500L/3-1P 3 13500 15000 1
13500L/3-3P 3 4500 5000 3
27000L/6-1P 6 27000 30000 1
27000L/6-3P 6 9000 10000 3
Table 1-1: OUTPUT VA PER PHASE

INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P
August, 2001 Rev. K
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Figure 1-1 MODEL 4500L / 2750L / 6000L-P OUTPUT DRAWINGS

INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P
August, 2001 Rev. K
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Full power is available at the maximum output voltage on either of two voltage ranges. The standard voltage
ranges are 135 and 270. Three optional voltage range pairs are available: 67.5/135, 156/312 and 200/400.
All "P" Power systems except for the 6000L will deliver full power from 45 to 2000 Hz. All 6000L-P power systems will
deliver full power from 45 to 440 Hz.
The 2750L-3P, 4500L-3P and 6000L-3P will deliver full power from 45 to 5000 Hz. The power sources are illustrated in
Figure 1-1. The 200/400 volt range (EHV Option) is specified for full power from 45 to 1000 Hz.
The output frequency of all "P" power systems can be programmed down to 17 Hz at a reduced output voltage.
1.3 ACCESSORY EQUIPMENT/RACK SLIDES
General Devices Model CTS-1-20-B307-2 rack slides may be attached to the sides of the power source using 10-32 X
1/2 flat head screws.
1.4 SPECIFICATIONS
Table 1-1 contains the operation specifications of the AC Power System. All specifications are tested in accordance
with standard California Instruments test procedures. The following specifications apply for operation at 100% of full
scale voltage, constant line voltages and under no-load and with External Sense Lines connected unless specified
otherwise.

INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P
August, 2001 Rev. K
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Table 1-2 SPECIFICATIONS 4500L-P / 2750L-P / 6000L-P
(All specifications apply using external sense, 23 ±5°C, constant line and load conditions unless specified otherwise,
after 30 minute warm-up.)
ELECTRICAL
OUTPUT SPECIFICATIONS
VA CURRENT PER PHASE
(At full output voltage) VOLTAGE RANGE
MODEL TOTAL PER PHASE 135 270
50°C 35°C 50°C 35°C 50°C 35°C 50°C 35°C
2750L-3 2700 3000 900 1000 6.66 7.40 3.30 3.70
2750L-1 2750 3000 2700 3000 20.0 22.22 10.00 11.11
4500L-3 4500 5000(1) 1500 1667(1) 11.12 12.34(1) 5.56 6.17(1)
4500L-1 4500 5000(1) 4500 5000(1) 33.34 37.04(1) 16.67 18.52(1)
6000L-3 5330 6000 1770 2000 13.12 14.82 6.56 7.41
6000L-1 5330 6000 5330 6000 39.35 44.44 19.68 22.22
9000L/2-3 9000 10000(1) 3000 3333(1) 22.24 24.68(1) 11.12 12.34(1)
9000L/2-1 9000 10000(1) 9000 10000(1) 66.66 74.08(1) 33.33 37.04(1)
12000L/2-3 10600 12000 3540 4000 26.24 29.62 13.12 14.81
12000L/2-1 10600 12000 10600 12000 78.7 88.88 39.35 44.44
13500L/3-3 13500 15000(1) 4500 5000(1) 33.34 37.04(1) 16.67 18.52(1)
13500L/3-1 13500 15000(1) 13500 15000(1) 100.0 111.2(1) 50.0 55.6(1)
18000L/3-3 15900 18000 5300 6000 39.35 44.44 19.68 22.22
18000L/3-1 15900 18000 15900 18000 118.0 133.4 59.0 66.7
27000L/6-3 27000 30000(1) 9000 10000(1) 66.66 74.08(1) 33.33 37.04(1)
27000L/6-1 27000 30000(1) 27000 30000(1) 200.0 222.2(1) 100.0 111.1(1)
NOTE: Increased current at 35°C is available up to 2000 Hz or 440Hz for 6000L.
(1) For UP option output VA and Current is limited to 50°C values.
For other Voltage Ranges: Current per phase = VA (per phase)/Voltage Range
Power factor: 0 to unity at full rated output VA
Peak Repetitive Current: 2.5 times the maximum TRMS current at 50°C
2750L & 6000L:4 times TRMS current at 50°C
Peak Non-repetitive Current: (10ms, 20ms for 6000L) 2.7 times the maximum TRMS current at 50°C
2750L & 6000L: 4 times TRMS current at 50°C

INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P
August, 2001 Rev. K
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Voltage range: 135 and 270 (Standard)
67.5 and 135 (LV Option)
156 and 312 (HV Option)
200 and 400 (EHV Option)
Total Distortion: (Maximum for all harmonics and noise to 300 KHz at full power with linear load)
45 Hz to 2 KHz: 1% THD
to 5 KHz: 2% THD
Line regulation: ±0.02% of full scale for ±10% line change
Load regulation: ±0.05% of full scale from no load to full load
Voltage accuracy (no-load, 23°C, based on TRMS measurement, 45 to 5000 Hz values specified otherwise):
±0.135 volts from 5 to 135 volts
±0.54 volts from 135 to 312 volts
±1.5 volts from 5 to 200 volts (EHV Option), 45 to 1 KHz
±3.0 volts from 200 to 400 volts (EHV Option), 45 to 1 KHz
Add 2% of programmed value below 45 Hz.
Frequency Range:
At Full Scale Voltage
2750L-3,4500L-3,
6000L-3 45 Hz to 5000 Hz at 50°C maximum currents
All other models 45 Hz to 2000 Hz at 35°C maximum currents
All 6000L systems 45 Hz to 440Hz and 6000L-1P
At less than Full Scale Voltage: (Refer to graph below)
Frequency accuracy: ±0.001% of programmed value
Frequency resolution: 0.01 Hz to 99.99
0.1 Hz to 999.9
1 Hz to 5000 Hz
Phase angle accuracy (With the same load on each phase):
Phase B and C relative to phase A: ±2 degrees to 2 KHz
±3 degrees to 5 KHz
PROTECTION

INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P
August, 2001 Rev. K
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Output overload: Automatic default with output relays open when programming from 5.0 volts.
Output short circuit: Immediate default with no automatic recovery.
Input Overvoltage: Overvoltage causes the circuit breaker to trip.
Loss of Input phase: No output for loss of Phase B or C.
Normal operation at reduced power with loss of Phase A.
Sense line fault: Immediate default of programmed output with relays open.
Temperature: Default of programmed output with relays open.
MEASUREMENTS (at 23°C)
Voltage accuracy: ±10 Digits of resolution
±2.0 volts from 0 to 200 volts (EHV option)
±3.5 volts from 200 to 400 volts (EHV option)
Voltage resolution: 0.1 volt for 1 digit
MODEL
2750L-3P, 6000L-3P
2750L-1P-EHV, 4500L-3P All Other Models
Current accuracy: ±10 Digits of resolution
Current resolution: 0.01 Amp 0.1 Amp For 1 digit
True power accuracy: ±10 Digits of resolution
True power resolution: 1 Watt 0.01 Kw For 1 digit
Apparent power resolution: 1 VA 0.01 KVA For 1 digit
Power factor resolution: .001 For 1 digit
Frequency ACCURACY (Hz) RESOLUTION (Hz)
45 to 99.99 Hz ±0.02 0.01
100 to 499.9 Hz ±0.2 0.1
500 to 999.9 Hz ±0.5 0.1
1000 to 5000 Hz ±10 1
NOTE: For frequencies below 45 Hz, add 2% of measured value to measurement accuracy specification.
Phase angle accuracy: ±2.0 degrees to 2 KHz, ±3 degrees to 5 KHz
Phase angle resolution: 0.1 degree

INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P
August, 2001 Rev. K
-7-
SUPPLEMENTAL SPECIFICATIONS
LINE INPUT
Voltage: 187 to 252VL-L three-phase
2750L: Same as above except can also operate with 1-phase input with 187 to 252 volts.
6000L: 208 to 252VL-L
UP Option: 342 to 456VL-L three-phase
Current (PF=.6, EFF=75%, V line=minimum, 3P, full load): 31 Amps
2750L-3P: 19 Amps
2750L-1P(input): 29 Amps
6000L-3P(output): 35 Amps
6000L-1P(output): 40 Amps
Frequency: 47 to 440 Hz
Efficiency: 75% (typical)
Surge Current:
(turn-on, VL-L = 252): 178 Amps
100 Amps for 6000L
SUPPLEMENTAL OUTPUT SPECIFICATIONS
Full current range:
Output noise voltage (20 KHz to 1 MHz at full-load):
200 millivolts (typical)
80 millivolts (typical for 6000L)
Voltage temperature coefficient: ±0.02 volts per °C
Voltage stability (24 hours, at constant line, load and temp.):
±0.015% of full scale
Voltage Settling Time: (from start of voltage change from 5.0 VRMS or higher voltage to a higher voltage to within
2% of final value.)
No-load: 16 milliseconds
Full-load: 0.3 seconds (16 milliseconds to within 15% of final value)
Steady-State Output Impedance (ohms) = (voltage range) x (0.0005)/Full-load current

INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P
August, 2001 Rev. K
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Frequency Temperature Coefficient: ±5 ppm of value per °C
Frequency Stability: ±15 ppm of value per year
Isolation: Line input to output: >500 VRMS
Front panel controls:
Power On/Off circuit breaker
Keypad: 20-key keyboard
Analog Meter Phase Selection Switch
Bus: IEEE-488 (GPIB)
Subsets; SH1, AH1, T6, L3, SR1, RL2, DC1, DT1
Codes and Formats:
Numeric Representation: NR1, NR2 or NR3
Header: HR1 or HR2 (upper or lower case)
Message Separators: SR1
Data transfer rate: 200K bytes per second
Language: A California Instruments language which is upward compatible from other C.I. products
Functions Range Resolution Initialization
1Voltage 0 to range 0.1 5.0
Voltage range 135/270 0.1 135
1Phase angle 0 to 999.9 0.1 B = 240
C = 120
Output relay (GPIB only) Open or Close Open
External Sync Internal or External Internal
Storage Registers Registers 0 through 16
Frequency
Range: 45 to 5000 Hz for 4500L-3P & 2750L-3P
2000 Hz for all others. 440 Hz for 6000L.
Resolution: 0.01 Hz from 45.00 to 99.99 Hz
0.1 Hz from 100.0 to 999.9 Hz
1 Hz from 1000 to 5000 Hz
Default: 60 Hz (any other available)
1Current Limit

INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P
August, 2001 Rev. K
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CURRENT LIMIT RANGE
VOLTAGE RANGE(1) RESOLUTION DEFAULT
MODEL 135 270 (on 135 Range)
2750L-3P 0 to 7.40, 3.70 0.01 7.40
2750L-1P 0 to 22.22, 11.11 0.01 22.22
4500L-3P 0 to 12.34, 6.17 0.01 12.34
4500L-1P 0 to 37.04, 18.52 0.01 37.04
6000L-3P 0 to 14.82, 7.41 0.01 14.82
6000L-1P 0 to 44.44, 22.22 0.01 44.44
9000L/2-3P 0 to 24.68, 12.34 0.01 24.68
9000L/2-1P 0 to 74.08, 37.04 0.01 74.08
12000L/2-3P 0 to 24.68, 12.34 0.01 24.68
12000L/2-1P 0 to 74.08, 37.04 0.01 74.08
13500L/3-3P 0 to 37.04, 18.52 0.01 37.04
13500L/3-1P 0 to 111.2, 55.6 0.1 111.2
18000L/3-3P 0 to 44.44, 22.22 0.01 44.44
18000L/3-1P 0 to 133.4, 66.7 0.1 133.4
27000L/6-3P 0 to 74.08, 37.04 0.01 74.08
27000L/6-1P 0 to 222.2, 111.1 0.1 222.2
For other Voltage Ranges: Current Limit Range = (VA per phase)/Voltage Range
NOTE (1): For UP option refer to 50°C current values. Accuracy: -0 to +15% of programmed value
NOTE: 1Independent control for each output phase
NOTE (*) Customer access to Initial/Default values for:
Frequency, Voltage, Voltage Range and Current Limit
OTHER PROGRAMMABLE FUNCTIONS
Register linking
Calibration of Phase, Output Voltage and measurement functions.
Ramp/Sweeps of Voltage, Frequency, Phase and Current Limit up to 2 functions simultaneously.
Service request (GPIB): Service Request for output faults, syntax errors and end of measurement.
Group execute trigger (GPIB): Trigger setups and terminate programs.
Status reporting: Serial Poll Status Byte and error messages.
Remote Shutdown A logic low input will program the voltage to 0 and open the Output Relays.
Output Relay: Controlled by GPIB. Normally open at power-up. Closed when the first function is
programmed from the front panel keypad.
External sense: Compensates for up to a 10% drop in the load lines.
Function Strobe Output: A 400 uS logic low output when any output is programmed.
External Sync: A 5 volt, 45 to 5 KHz, 5 milliamp TTL input. The output will track the frequency and

INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P
August, 2001 Rev. K
-10-
phase of this input. Loss of this input will cause the output to default.
Indicators: 32 character LCD display, Output Overload, Over temperature Power On, High
Voltage Range.
Dimensions: 10.5 inches (26.7 cm) high, 23 inches (58.4 cm) deep and 19 inches (48.3 cm) wide.
Weight lbs (Kg): 175 (79.2)
Material: Aluminum for Front panel, rear panel and top cover.
Steel for chassis.
Finish: Front panel - painted gray 26440 per Federal Standard 595
Chassis - zinc plate type 2 class 2.
Rear panel and top cover - iridite.
Air intake/exhaust: Intake from both sides of chassis.
Exhaust to the rear.
Modularity: Oscillator, All amplifiers, DC power supplies, Current
Limit Board Assembly, Range-Relay Board, All displays
Connectors
Input Power: Kulka terminal block, 9-85-5 (TB3)
Output Power: Kulka terminal block, 9-85-4 (TB1)
Auxiliary Output Power: Barrier Strip (TB2)
External Sense: AMP connector, 1-480705-0 (J6)
System Interface
(mating connector): 3M Connector 3366-1001 plug
System Interface: 3M connector, 3367-1000 (J7)
IEEE-488 connector: J5
Chassis slides: Zero Manufacturing Company Model CTN-1-20-E94
Operating temperature: 0°C to 50°C
Storage temperature: -40°C to +85°C
Operating altitude: 0 to 6000 Ft.

INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P
August, 2001 Rev. K
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OPTIONS SPECIFICATIONS
Universal Input Power (UP option): 342 to 456 VL-L three phase
Output Voltage Ranges: 156/312 (HV option)
67.5/135 (LV option)
200.0/400.0 (EHV option)
Master: Must be used with LK option
Slave: Must be used with LK option
Square Wave (4500L-3P and 2750L-3P only) Performance from 50 Hz to 5 KHz:
Rise and Fall Time (10% to 90%): Less than 40 microseconds
Droop: Less than 10%
Overshoot (resistive load): Less than 20%
Mode: Allows power system to be programmed to a 1 or 3 phase output.
Auxiliary outputs (Option AX): Master and Slave options not available with this option
(All specifications at 23°C and verified with TRMS voltmeter. The Phase D sense lines must be connected to
the Phase D output.)
Phase D:
Voltage: 26.0 Vrms fixed
Accuracy: ±2%
Current: 3.0 Amps (Max)
Frequency: 360 to 440 (Tracks the main outputs)
Phase: Tracks the Phase A output
Accuracy: ±1 degree. (All outputs at half load, 400 Hz)
Distortion: 1% THD maximum with linear load
Line Regulation: ±0.05% using external sense
Load Regulation: ±0.05% using external sense
Phase E
Voltage: 5.0 Vrms fixed
Accuracy: ±5%
Current: 5.0 Amps (Max)

INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P
August, 2001 Rev. K
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Frequency: 360 to 440 Hz (Tracks the main outputs)
Phase: Tracks the phase A output with Phase D
Distortion: 1% THD maximum with linear load
Line Regulation: ±0.1% for 10% line change
Load Regulation: ±10% from no-load to full-load
MATE (MT option)
CIIL language
DFI connector
Confidence Test (Tests 3 phases for output, oscillator drive, phase relationship, frequency and current
limit.)
MIL-704D (704D option)
Performs all sections of MIL-STD-704D
2-PHASE (2P): 2-phase operation
RTCA/DO-160C (DO160C option)
Performs all sections of RTCA/DO-160C
SYSTEMS
MODEL POWER PER PHASE MAX CURRENT PER PHASE (135V RANGE)
(35°C) UP (35°C) UP
9000L-1P 10000 9000 74.08 66.66
13500L-1P 15000 13500 111.2 100.0
27000L-1P 30000 27000 222.2 200.0
9000L-2P 5000 4500 37.04 33.34
9000L-3P 3333 3000 34.68 22.22
12000L-3P 4000 29.62
12000L-1P 12000 88.88
13500L-3P 5000 4500 37.04 33.34
18000L-3P 6000 44.44
18000L-1P 18000 133.4
27000L-3P 10000 9000 74.08 66.66

INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P
August, 2001 Rev. K
-13-
SECTION 2 INSTALLATION AND ACCEPTANCE
2.1 UNPACKING
Inspect the unit for any possible shipping damage immediately upon receipt. If damage is evident, notify the carrier.
DO NOT return an instrument to the factory without prior approval. Do not destroy the packing container until the unit
has been inspected for damage in shipment.
2.2 POWER REQUIREMENTS
The AC Power System has been designed to operate from a three-phase AC line voltage. The input line voltage may
be between 187 volts and 252 volts line-to-line for the standard product or 342 to 456 volts line-to-line for the UP option.
The frequency may be between 47 Hz and 440 Hz. Select an AC input line and hookup wire to the AC Power System
that will deliver 40 amps per phase and still supply a minimum of 187 volts line-to-line. Refer to Figure 2-2 for circuit
breaker requirements of all multichassis power system. The 6000L power system must have a minimum of 208VL-L for
a full rated load on the output.
2.3 MECHANICAL INSTALLATION
The power system has been designed for rack mounting in a standard 19 inch rack. The unit should be supported from
the sides with optional rack slides. See Accessory Equipment/Rack Slides in paragraph 1.3. The cooling fan at the
rear of the unit must be free of any obstructions which would interfere with the flow of air. A 2.5 inch clearance should
be maintained between the rear of the unit and the rear panel of the mounting cabinet. Also, the air intake holes on the
sides of the power source must not be obstructed. See Figure 1-1.
2.4 INPUT WIRING
The AC Power System must be operated from a three-wire three-phase service with a fourth wire for common. The
common wire is connected to the chassis of the AC Power System. The mains source must have a current rating
greater than or equal to the AC Power System circuit breaker, 40 amps. Refer to Figure 2-1 for the input power
connections. Refer to Figure 2-2 for all multichassis power systems.
The 2750L may also be operated from a 1-phase input. The 1-phase line input must be connected between the øB and
øC terminals of TB3 on the rear panel. These terminals are identified as terminals 2 and 3 of TB3 in Figure 2-1.

INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P
August, 2001 Rev. K
-14-
Figure 2-1 6000L / 2750L and 4500L-3P REAR PANEL CONNECTIONS

Figure 2-2 SYSTEM INTERCONNECT
6000L-3, 12000L/2-3, 4500L-3, 18000L/4-3
INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P
August, 2001 Rev. K

INSTRUCTIONAL MANUAL 2750L-P/4500L-P/6000L-P
August, 2001 Rev. K
-16-
Figure 2-2 SYSTEM INTERCONNECT FOR MODE OPTION
6000L-3, 12000L/2-3, 4500L-3, 9000l/2-3, 13500l/3-3, 18000L/4-3 18000l/3-3