Lambda ESKI Instruction Manual

INSTRUCTION MANUAL FOR

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83-475-001 Revision D

MODEL
SERIAL NUMBER

405 ESSEX ROAD, NEPTUNE, NJ 07753

LAMBDA EMI

TEL: [phone]

FAX: [phone]

TABLE OF CONTENTS

Description Page

1 GENERAL INFORMATION

2 INSTALLATION

3 OPERATING INSTRUCTIONS

4 PRINCIPLES OF OPERATION

5 MAINTENANCE AND TROUBLESHOOTING

6 RECOMMENDED SPARE PARTS

2

21.1 DESCRIPTION

21.2 SPECIFICATIONS
5

52.1 INITIAL INSPECTION

52.2 MECHANICAL CHECK

52.3 POWER REQUIREMENTS

52.4 COOLING

52.5 MECHANICAL
6

73.1 TURN-ON CHECK OUT PROCEDURE

73.2 MODES OF OPERATION

13

134.1 GENERAL

134.2 POWER FLOW (SCHEMATIC 01-475-005)

134.3 SIGNAL FLOW (SCHEMATIC 01-000-225)

144.4 A200 BUCK CONVERTER
15

155.1 GENERAL

155.2 INSPECTION AND CLEANING

155.3 CALIBRATION

175.4 TROUBLESHOOTING
18

186.1 RECOMMENDED SPARE PARTS LIST

MEMORANDUM TO USERS OF E/M POWER SUPPLIES IN RACK INSTALLATION

All E/M power supplies have been designed and tested to provide full rated current and voltage
throughout the specified line voltage range at the rated ambient air temperature. To achieve this
maximum rating, airflow as provided by the internal fans, proportioned and directed by chassis
openings and internal partitions, must not be impeded.

On the ESKI supplies, air enters the unit from the front, at the location of the fan, and is
transferred through the supply in a horizontal direction toward the rear. Airflow is reduced any
time there is a negative pressure at the air inlet or positive pressure at the air outlet. Each fan is
capable of providing 100 to 130 cubic feet per minute of air flow (CFM) at zero static pressure.
The supply itself produces some restrictions to this flow so that approximately 80% of the airflow is
available. As static pressure increases, caused by additional restriction of airflow external to the
power supply, the efficiency of the fans drops significantly and airflow is greatly reduced. This
reduction in airflow causes a substantial increase in internal temperatures of the supply, frequent
thermostat shut down and reduced power supply reliability.

Ideally, when power supplies are mounted in a rack, the rack should have no sides or rear covers.
Since this is usually not practical or safe, the installer must consider the effect of any enclosure on
power supply airflow. Since the power supplies must be supported by some sort of rail along the
sides of the supply, front to rear, this rail must be chosen for proper strength but must not be either
too close to or extend up too far along the side of the supply or airflow will be blocked. To
minimize vertical height use an angle iron of substantial cross section and unequal leg dimension.
Do not support the power supply from the front panel only, in an attempt to minimize this problem.
The rail does not need to be continuous from the front to back to support the supply, but for safety
and ease of installing and removing the supply it usually is.

Most commercial racks are available with louvered side panels and doors. Side panels are also
available with an extended depth which provides an additional plenum space on each side of the
rack for improved airflow.

The ambient air, especially in a tropical climate can also be very hot. Frequently, high humidity is
also present. This situation, while not ideal for power supply longevity, should in itself cause little
difficulty. When combined with insufficient airflow, however, it can significantly affect power
supply.

Page 1 of 18

83-475-001 Rev. D

1 GENERAL INFORMATION

1.1 DESCRIPTION

This manual contains operation and maintenance instructions covering the Electronic
Measurements, Inc. series of ESKI power supplies. These supplies are constant current
regulated sources of DC power, which also contain boost voltage and ignition pulse to
start Xenon Lamps.

1.2 SPECIFICATIONS

The following specifications describe the operational characteristics of this series of
power supplies. All units are shipped with an AC barrier strip located on the back of the
unit.

AC INPUT: THREE PHASE UNIT
208/220 VAC ± 10% three phase 3 wire delta. 47-63 Hz optional 208/220 VAC ± 10%

single phase 47-63 Hz.
AC INPUT : SINGLE PHASE UNIT
208/220 VAC ± 10% Single Phase 47-63 Hz.
AC INPUT CURRENT: THREE PHASE UNIT
22 Amps per phase for 3 phase power
AC INPUT CURRENT: SINGLE PHASE UNIT
45 Amps
REGULATION:
The current regulation for line variations of ± 10% is .1% over the range of input AC.
The load current regulation for a 25% load change is .1%.
STRIKE VOLTAGE: 25KV
BOOST VOLTAGE: 800 Volts
RIPPLE:
The output ripple measured with the circuit of Fig. 1 will be ≤ 0.8V

at 40 Amps current

p-p

output.
EFFICIENCY:
The AC input to the DC output is 92%.
RESPONSE TIME: The programming response time is approximately 1 millisecond for a

50% current change.
STABILITY:
The maximum deviation in output current for an 8 hour period is .05% under conditions of

constant line, load and temperature after a 2 hour warm-up.

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83-475-001 Rev. D

TEMPERATURE COEFFICIENT:
The output current is .02% /C of rated output current.
TEMPERATURE:
Operating continuous duty performance within specification in any ambient temperature

between 0°C and 60°C with appropriate derating above 50°C. Units may be safely stored
at temperatures of -55°C to 85°C.

COOLING:
Cooling air driven by a long life fan enters the enclosure at the front and exits at the sides

and rear.
ISOLATION:
Non-line isolated power supply circuitry is fully isolated from chassis.
LEAKAGE:
Per UL 1012 with standard RFI filter.
CONTROLS:
All ESKI power supplies are provided with a U/L listed circuit breaker which combines

primary circuit protection with on/off control. Current adjustment is via a single (10) turn
potentiometer located on the front panel. Indication of the output current is provided by
an ammeter mounted on the front panel. Indication of lamp voltage is provided by a
voltmeter mounted on the front panel.

PROTECTIVE CIRCUITS:
Adjustable over-current kill circuit drops output to zero in case the current regulation goes

out of control. Automatic reset over-temperature switch disables power output.
PROGRAMMING:
All ESKI power supplies may be remotely controlled via a connector for current, power

supply enable, current readback, ignition and interlock functions.
DIMENSIONS:
Three Phase P/S 5 1/4' H X 19" W X 15" D

Single Phase P/S 7" H X 19" W X 17" D
WEIGHT:
Three Phase P/S 45 Pounds

Single Phase P/S 55 Pounds

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83-475-001 Rev. D

Figure 1 Loss Pass Filter

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83-475-001 Rev. D