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HLMU Datasheet(PDF) 2 Page - Littelfuse

No. de Pieza. HLMU
Descripción  The HLMU Series is a universal voltage, encapsulated, 3-phase voltage monitor. It continuously measures the voltage of each of the three phases with microcontroller accuracy and compares the value to preset trip points
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Fabricante  LITTELFUSE [Littelfuse]
Página de inicio  http://www.littelfuse.com
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HLMU Datasheet(HTML) 2 Page - Littelfuse

   
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© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/
Rev: 1-A-062716
Protection Relays
Voltage Monitoring Relays
www.littelfuse.com/hlmu
HLMU SERIES
time to reset. If the fault is corrected after the restart delay is
complete, the output energizes immediately. The restart delay
also occurs when line voltage is applied/reapplied.
R = Restart Delay on fault correction. The restart delay begins
when line voltage is reapplied or when a voltage fault is
corrected. This option is normally selected when staggered
restarting of multiple motors on a power system is required.
N = No Restart Delay. 0.6 second initialization delay on
application of line voltage applies.
Restart Notes: All restart options remain reset when the
following conditions are detected:
1. Phase loss (phase unbalance greater than 25%)
2. Average line voltage less than 120VAC
3. Phase reversal
The restart delay begins when the condition is corrected.
LED Operation
The LED flashes green during the restart delay, then glows
green when the output energizes. It flashes red during the trip
delay then glows red when the output de-energizes. It flashes
red/green if phase reversal is sensed. If a fault is sensed during
the restart delay, the LED will glow red during that portion or the
full restart delay.
Accessories
LPSM003ZXID (Indicating),
LPSM003Z (Non-indicating) Fuse Holders
Littelfuse POWR-SAFE Dead Front holders
provide optimum protection to personnel for
Class CC and Midget-Style fuses. 600 VAC/DC
0KLK002.T Midget Fuse (2 Amp)
10 x 38 fast acting, high-interrupting capacity,
current-limiting type fuse. 600 VAC/500 VDC
C103PM (AL) DIN Rail
35 mm aluminum DIN rail available in a 36 in.
(91.4 cm) length.
P1023-20 DIN Rail Adapter
Allows module to be mounted on a 35 mm DIN
type rail with two #10 screws.
Specifications
Line Voltage
Type
3-phase delta or wye with no connection
to neutral
Operating Voltage
200 - 480VAC
Range
Voltage Adj. Range Frequency
240
200-240VAC
50 or 60Hz
380
340-420VAC
50Hz
480
400-480VAC
60Hz
Line Voltage Max.
550VAC
AC Line Frequency
50/60 Hz automatically detected
Phase Loss
≥ 25% unbalance
Response Time
≤200ms
Undervoltage &
Voltage Unbalance
Type
Voltage detection with delayed trip &
automatic reset
Overvoltage
Trip Voltage
109 - 113% of the adjusted line voltage
Reset Voltage
≅ -3% of the trip voltage
Undervoltage
Trip Voltage
88 - 92% of the adjusted line voltage
Reset Voltage
≅ +3% of the trip voltage
Voltage Unbalance
Trip Setpoint
Adjustable 2 - 10% or specify fixed unbalance
of 2 - 10% in 1% increments
Reset on Balance
≅ -0.7% unbalance
Trip Delay
Active On
Over/undervoltage, voltage unbalance,
over/under frequency
Range
Adjustable from 1 - 30s or specify fixed
delay 1 - 30s in 1s increments
Tolerance
± 15%
Restart Delay
Range
Adjustable from 0.6 - 300s; if no restart
delay is selected a 0.6s initialization
delay applies
Tolerance
± 15%
Over/Under Frequency
±4%; Reset ±3%; 50/60 Hz
Phase Sequence
A, B, C, L1, L2, L3
Response Time-Phase
Reversal & Phase Loss
≤200 ms
Reset
Automatic
Output
Type
Isolated Electromechanical Relay
Form
DPDT
Rating
10A resistive @ 240VAC;
8A resistive @ 277VAC; NO-1/4 hp @ 120VAC;
1/3 hp @ 240VAC
Life
Mechanical - 1 x 106
Electrical (at 10A) - DPDT - 1 x 303
Protection
Phase Reversal/Failure
ASME A17.1 Rule 210.6
Motors and Generators
NEMA MG1 14:30, 14:35
Surge
IEEE C62.41-1991 Level B
Isolation Voltage
≥ 2500V RMS input to output
Circuitry
Encapsulated
Mechanical
Mounting
Surface mount with one #10 (M5 x 0.7) screw
Note: 0.25 in.(6.35 mm) spacing between
units or other devices is required
Dimensions
H 76.7 mm (3.0”); W 50.8 mm (2.0”);
D 41.7 mm (1.64”)
Termination
Screw terminal connection up to 12 AWG
(3.3 mm2) wire
Environmental
Operating/Storage
Temperature
-40° to 60°C / -40° to 85°C
Humidity
95% relative, non-condensing
Weight
≅ 3.9 oz (111 g)


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