EP4-1
DIGITAL VOLTAGE
PROTECTIVE RELAY
User's Manual
SAFETY PRECAUTION
This manual uses the following symbols to ensure safe operation of this product.
WARNING
CAUTION
Warnings are indicated when mishandling this product might result in death or serious injury
Cautions are indicated when mishandling this product might result in minor injury to the user,
to user.
or only physical damage to the timer.
‧Note this incorrect wiring of this product can damage it and lead to other hazards. Make sure the product has
been correctly wired before turning the power ON.
‧Before wiring, or removing / mounting the product, be sure to turn the power OFF. Failure to do so might cause
electric shock.
‧Do not touch electrically charged parts such as the power terminals. Doing so might cause electric shock.
‧Do not disassemble the product. Doing so might cause electric shock or faulty operation.
‧Use the product within the operating ranges recommended in the specification (temperature, humidity, voltage,
shock, mounting direction, atmosphere and etc.). Failure to do so might cause fire or faulty operation.
‧Firmly tighten the wires to the terminal. Insufficient tightening of the wires to the terminal might cause fire.
WARNING
CAUTION
ANLY ELECTRONICS CO., LTD.
http://www.anly.com.tw
When using this product in applications
that require particular safety or when
using this product in important facilities,
please pay attention to the safety of the
overall system and equipment. Install fail-
safe mechanisms, perform redundancy
checks and periodic inspections and
adopt other appropriate safety measures
when it is necessary. This product is rated
at Class Ⅱ .
RESTRICTIONS ON USE
V
S
L1
L2
L3
L1
L2
L3
V
S
L1
L2
L3
V
S
L1
L2
L3
V
S
NO INPUT
UNBALANCE VOLTAGE
REVERSE PHASE
PHASE LOSS
UNDER VOLTAGE
OVER VOLTAGE
V
S
L1
L2
L3
V
S
L1
L2
L3
V
S
L1
L2
L3
V
S
L1
L2
L3
V
S
L1
L2
L3
V
S
L1
L2
L3
V
S
V
S
V
S
L1
L2
L3
L1
L2
L3
L1
L2
L3
1. 3-phase voltages display 2. Fault indications
Phase-to-phase voltages
are displayed in sequence.
Set the desired value for over voltage.
The display will show existing 3-phase
voltages after 10 seconds.
Set the desired value for under voltage.
The display will show existing 3-phase
voltages after 10 seconds.
Set the tripping delay for under voltage.
The display will show existing 3-phase
voltages after 10 seconds.
Set the tripping delay for over voltage.
The display will show existing 3-phase
voltages after 10 seconds.
3. Over voltage tripping delay setting1. Over voltage setting
4. Under voltage tripping delay setting2. Under voltage setting
Operating voltage
Life
Mechanical : 5,000,000 times / Electrical : 100,000 times
voltage range
Allowable operating
85 ~ 110% of rated operating voltage
Rated frequency
50 / 60 Hz
Display error ±1%(at 550V)
Contact rating 250VAC 5A (Resistive load)
Power consumption Approx. 3.3VA
Ambient temperature -10 ~ +50 ºC (without condensation & freezing)
Ambient humidity MAX 85% RH (without condensation)
Altitude MAX 2000m
Weight Approx. 130g
AC/DC : 100 - 240V, DC : 8 - 60V(for EP4-11060- only)
REV. ON
OFF
ON
OFF
ON
OFF
ON
OFF
UNBAL.
AUTO
5S/1S
Auto reset
Auto reset delay 5 sec
Auto reset delay 1 sec
Manual reset
Phase reversal protection ON
Unbalance protection ON
Unbalance protection OFF
Phase reversal protection OFF
V
S
L1
L2
L3
L1
L2
L3
V
S
L1
L2
L3
L1
L2
L3
V
S
V
S
OVER VOLTAGE
SETTING VALUE
UNDER VOLTAGE
SETTING VALUE
OVER VOLTAGE DELAY
UNDER VOLTAGE DELAY
5. DIP switches setting 6. Setting display
Pressing "TEST" will cycle-through all
settings in sequence.
3-phase voltages are displayed after
10-second of idle.
Unbal. Auto
Off
5S
1S
Rev.
Over
Volt
Under
Over
Volt
Under
Under
Over
Over
Time
Time
Under
EP4-1
L2
L3
L1
Test
OverUnbal. Auto
O
ff
5S
1S
Rev.
Voltage Time
Under Over Under
Reset
Voltage indicatior
Over voltage
tripping delay
Time indicatior
in second
Under voltage
tripping delay
Function settings
Manual reset
Display
Under voltage setting
Phase sequence
Setting values display
Over voltage setting
NAMES AND FUNCTIONS OF FACEPLATESPECIFICATIONS
SETTING PROCEDURE DISPLAY
DIMENSIONS
90.6
45
45
68.1
90.6
94.6
56.6
18
39.5 7
