Ratings And Specifications - Mitsubishi Electric MELPRO-A Series Instruction Manual

MDG-A4 Series Directional Earth Fault Relay [Standard: JIS C 4609 (1990)]
Features
1. Directional earth fault relay for EVT correspondence.
2. Wide setting range and fine setting steps enable
flexible protection coordination.
3. Reset method of output contacts can be switchable
between auto-reset and self-hold.
4. The fault value record function is installed.

Ratings and Specifications

Type name
Style No.
Zero-sequence current
Zero-sequence voltage
Ratings
Frequency
Auxiliary power supply
I Operation value
0
V Operation value
0
Settings Operating time
Using
condi
Output contact
tion
Self-monitoring
Operation indicator
Display
Numerical display
Test button
(Forced operation)
Power V
0
consumption
Power supply
Case
(Munsell color)
Mass
(*) shows factory setting.
Note) It is necessary to combine MZT type ZCT and commercially available EVT (compliance with JEC-1201) with MDG-A4V
relay.
Don't combine other transformers with this relay.
(Ratio to V
Frequency
The "RUN" indicator (green-color) is lighted in normal condition.
The indicator turns from black into orange color when the protection element
is put into operation. (Manual resetting type)
Operating time setting
Output contact setting
TEST (Forced operation)
※1 "Lo." means LOCK setting (the protection element is locked).
※2 "In." is the display for instantaneous setting.
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).
circuit
5. 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.
6. Panel cutout is the same as previous MELPRO-A series
and E series.
MDG-A4V-R
105PGA
0.2A (MZT type ZCT primary)
110V/190V (switchable by input terminals)
50/60Hz (switchable)
AC110V (Range: 90～120V)
0.1 -0.2-0.4-0.6-0.8-1.0A (ZCT primary value)
(*)
LOCK -2-2.5-3-4-5-6-7-7.5-8-9–10%
(*)
voltage on single-phase perfect fault: 100%=110V/190V)
0
Instantaneous -0.2-0.3-0.4-0.5-0.6-0.7-0.8-0.9-1.0s
(*)
50Hz(SW1-ON) - 60Hz
Self-hold(SW2-ON) – Auto-reset
Indication item
V measurement
0
I measurement
0
Phase measurement
V , I Pickup
0 0
V setting
0
I setting
0
Frequency setting
Fault record of V
0
Fault record of I
0
Fault record of phase
Clear fault record
0.1VA at rated voltage
Normal：3.0VA Operating：4.0VA
Unit-fixed type
(Fig. 7-9)
(0.6B7.6/0.2)
Approx. 0.6kg
6
MDG-A4V-RD
520PGA
(SW1-OFF)
(*)
(SW2-OFF)
(*)
Range
1.0～12.0%
0.05～0.09A, 0.1～1.5A
0～359°(V standard, I
0 0
U.-I.
Lo. ,2.0～10%
(※1)
0.1～1.0A
In. ,0.2～1.0s
(※2)
50,60Hz
Ho.,FU.
2.0～40.0%
0.1～1.5A
0～359°(V standard, I
0 0
O.K.
F.O.
Unit-drawer type
(Fig. 7-10)
(0.6B7.6/0.2)
Approx. 0.7kg
lag display)
lag display)
JEP0-IL9559