SPECIFICATIONS AND FEATURES
The following specifications apply for all Lambda E package LM power
supplies. Speci-
fication exceptions noted here relate to models incorporating model
option "Y" and/or "T". Per-
formance specifications do not change for models with suffix "R", e.
g., LM-E2-R unless the
models also include model options "Y" and/or "T" e. g., LM-E2 -- YR;
for these models the appro-
priate specification exceptions also apply.
NOTE: Specifications in italics apply only for Lambda models with a
"Y"
suffix, e. g., LM-E2- Y. AC INPUT specification with an asterisk*,
applies
only for Lambda models with a "V" or "T" suffix, e. g., LM-E2-YT.
DC OUTPUT--Voltage regulated for line and load
Voltage Range...5V +/- 5% @ 20A
Multi-Current Ratings.... Current ratings specified for each maximum
ambient temper-
ature apply over entire output voltage range, with input frequency
55-65 cps. For
input frequencies 45-55 at 105-132 VAC, 200-250 VAC, or 205-265 VAC,
delete 40'C
rating.
For input frequencies 360-440 cps, consult factory for current
ratings.
For maximum current ratings at each ambient temperature see table I
of pertinent
model group.
REGULATED VOLTAGE OUTPUT
Regulation (line)... Less than 0. 05 percent plus 4. 0 millivolts for
input variations from
105-132 or 132-105 volts AC
... Less than 0. 01 percent plus l. 0 millivolt for input
variations from
105-132 or 132-105 volts AC
Regulation (load)... Less than 0. 03 percent plus 3. 0 millivolts for
load variations from
0 to full load or full load to 0
... Less than 0. 02 percent plus 2. 0 millivolts for load
variations from
0 to full load or full load to 0
Remote Programming
External Resistor... Nominal 200 ohms/volt output
Programming Voltage... One-to-one voltage change
Ripple and Noise... One millivolt rms; 3 millivolts peak-to-peak with
60 cps input
... 0. 5 millivolt rms; 1.5 millivolts peak-to-peak with 60 cps
input
...1. 0 millivolt rms; 10 millivolts peak-to-peak with 400 cps
input
Temperature Coefficient... Change in output voltage less than 0.
03%/'C
... Change in oust voltage less than 0. 01%/'C
AC INPUT--105-132 volts AC at 45-440 cps; 450 watts+
+ With output loaded to full 40'C rating and input voltage 132 volts
at 55-65 cps.
*... 200-250 volts AC at 45-440 cps ("T" option)
*... 205-265 volts AC at 45-440 cps ("V" option)
INPUT FUSE--"SLO-BLO" fuse F1 protects the AC input circuit. Overload
of the supply does not
cause fuse failure.
"SLO-BLO" fuse F2 protects the load from excessive output current
that can be
caused by internal circuit failure.
For fuse ratings see table I of pertinent model group.
OVERLOAD PROTECTION
Thermal.... Thermostat resets automatically when overtemperature
condition is
eliminated
Electrical... Within rated voltage range, an automatic electronic
current-limiting circuit
limits output current to approximately 110 percent of 40 C rated
current for protection
of load and power supply; for overloads approaching short circuit,
both voltage and
current decrease until at short circuit, current is approximately 30
percent or less
of rated current, except for models LME-0-7, 0-14, 0-32 and 0-60,
where output
current remains limited to 110 percent of 40'C rated current at 40'C
ambient.
OVERSHOOT--No overshoot of output voltage under conditions of power
turn-on, power turn-off,
or power failure.
INPUT AND OUTPUT CONNECTIONS--Heavy duty terminal block on rear of
chassis
OPERATING AMBIENT TEMPERATURE RANGE AND DUTY CYCLE--Continuous duty
from -20'C
to 71'C ambient with corresponding load current ratings for all modes
of operation, and
all mounting positions.
STORAGE TEMPERATURE-- -55'C to +85'C
CONTROLS
DC output control... Voltage adjust control permits adjustment of DC
output voltage via
access hole located in nameplate.
REMOTE SENSING--Provision is made for remote sensing to eliminate
effect of power output lead
resistance on DC regulation.