Protection Relays
Voltage Monitoring Relays
HLVA6I23
Single-Phase Monitor
Description
The HLVA6I23 is a single-phase undervoltage monitor designed
to protect sensitive equipment from brownout or undervoltage
conditions. Time delays are included to prevent nuisance tripping
and short cycling. The 30A, 1hp rated, SPDT relay contacts
allow direct control of motors, solenoids and valves. The output
relay can be ordered with isolated SPDT contact to allow
monitoring of one voltage and switching a separate voltage.
Two undervoltage trip point ranges allow monitoring of 110 to
120VAC or 208 to 240VAC systems.
Operation
Upon application of input voltage the output relay remains
de-energized. When the input voltage value is above the pull-in
voltage, the restart delay begins. At the end of the restart delay,
the output relay energizes. When the input voltage falls below
the trip point, the trip delay begins. If the input voltage remains
below the pull-in voltage for the entire trip delay the relay de-
energizes. If the input voltage returns to a value above the pull-in
voltage, during the trip delay, the trip delay is reset and the relay
remains energized. If the input voltage falls below the trip point
voltage during the restart delay, the delay is reset and the relay
remains de-energized. Reset is automatic upon correction of an
undervoltage fault.
V = Voltage
NO = Normally Open
NC = Normally Closed
C = Common
T1 = Undervoltage Trip Point
T2 = Restart Delay
Wiring Diagram
L1
N/L2
Reset:
Removing input voltage resets the output relay and the
time delays.
Features
JJ
30A, SPDT, NO output contacts
100 to 240VAC input voltage
70 to 220VAC adjustable undervoltage trip point in 2 ranges
Restart delays from 3 - 300s
Trip delay 1 - 20s fixed
Isolated or non-isolated relay contacts
JJ
JJ
JJ
JJ
JJ
Accessories
P1015-13
(AWG 10/12),
P1015-64
(AWG 14/16)
Female Quick Connect
These 0.25 in. (6.35 mm) female terminals are
constructed with an insulator barrel to provide
strain relief.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation/removal of modules quick and easy.
P1015-18 Quick Connect to Screw Adapter
Screw adapter terminal designed for use with
all modules with 0.25 in. (6.35 mm) male quick
connect terminals.
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.
© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/hlva6i23
Rev: 1-A-062116
Protection Relays
Voltage Monitoring Relays
HLVA6I23
Specifications
Input
Min & Max RMS Voltage
AC Line Frequency
Power Consumption
Undervoltage Sensing
Type
Ranges
(4)
(6)
Pull-In Voltage
Trip Point Accuracy
Time Delay
Restart Delays
Trip Delay
Repeat Accuracy
Tolerance
(Factory Calibration)
Reset Time
Time Delay vs. Temp.
& Voltage
Output
Type
Form
Ratings
General Purpose
Resistive
Motor Load
Life
Protection
Surge
Circuitry
Isolation Voltage
Insulation Resistance
Mechanical
Mounting
Dimensions
Termination
Environmental
Operating/Storage
Temperature
Humidity
Weight
70 to 264VAC
50/60 Hz
AC ≤ 4VA
Peak voltage sensing
70 to 120VAC
170 to 220VAC
105% or trip point voltage
± 3% of trip point
3 - 300s adjustable
1 - 20s fixed in 1s increments
±0.5% or 20ms, whichever is greater
±5%
≤ 150ms
≤ ±10%
Electromechanical relay
SPDT
SPDT-NO
SPDT-NC
125/240VAC
30A
15A
125/240VAC
30A
15A
28VDC
20A
10A
125VAC
1 hp*
1/4 hp**
240VAC
2 hp**
1 hp**
6
Mechanical - 1 x 10
Electrical - 1 x 10
5
, *3 x10
4
, **6,000
IEEE C62.41-1991 Level A
Encapsulated
≥ 1500V RMS input to output; isolated units
≥ 100 MΩ
Surface mount with one #10 (M5 x 0.8) screw
H
76.7 mm (3”);
W
51.3 mm (2”);
D
38.1 mm (1.5”)
0.25 in. (6.35 mm) male quick connects
Function Diagram
PI
TP
V
C-NO
C-NC
IV
tr = Restart Delay
td = Trip Delay
PI = Pull-in 105% or
trip point
TP = Trip Point
V = Monitored Voltage
IV = Input voltage
C-NO = Normally Open
Contacts
C-NC = Normally Closed
Contacts
-40° to 60°C / -40° to 85°C
95% relative, non-condensing
≅
3.9 oz (111 g)
© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/hlva6i23
Rev: 1-A-062116