6
JEP0-IL9556
MUV-A3 Series Undervoltage Relay [Standard: JEC 2520 (2018)]
Features
1. Alert function which detects the difference between
setting frequency and injected frequency.
2. The fault value record function is installed.
3. Good operability and visibility design is adopted.
The numerical display turns on for 3 seconds when the
setting value is changed, which enables to check
setting values easily.
4. The power supply can be derived from VT secondary.
5. Panel cutout is the same as previous MELPRO-A series
and E series.
Ratings and Specifications
(*) shows factory setting.
Type name
MUV-A3V-R
MUV-A3V-RD
Style No.
106PGA
521PGA
Ratings
Voltage
110V
Frequency
50/60Hz (switchable)
Settings
Operation value
LOCK
(*)
-60-65-70-75-80-85-90-95-100V
Operating time
0.1
(*)
-0.2-0.5-1.0-1.5-2.0-2.5-3.0-4.0-5.0s
Frequency
50Hz(SW1-ON) - 60Hz
(*)
(SW1-OFF)
Display
Self-monitoring
The "RUN" indicator (green-color) is lighted in normal condition.
Operation indicator
The indicator turns from black into orange color when the protection element is
put into operation. (Manual resetting type)
Numerical display
Indication item
Range
Voltage measurement
55
～
130V
Pickup
U.
Operation value setting
Lo.
(
※
1)
,60
～
100V
Operating time setting
0.1
～
5.0s
Frequency setting
50,60Hz
Fault record
0,25
～
100V
(
※
2)
Clear fault record
O.K.
TEST (Forced operation)
F.O.
※
1 "Lo." means LOCK setting (the protection element is locked).
※
2 If the fault value is less than 25V, the record shown on the display is "0".
Test button
(Forced operation)
By turning the indicator select switch to "TEST" and pushing "TEST" button for 2
seconds or more, output contact can be forced to operate (except for the case of
LOCK setting).
Power consumption (VT)
Normal
：
3.0VA Operating
：
3.0VA
Case
(Munsell color)
Unit-fixed type
(Fig. 4-8)
(0.6B7.6/0.2)
Unit-drawer type
(Fig. 4-9)
(0.6B7.6/0.2)
Mass
Approx. 0.6kg
Approx. 0.7kg
