Internal Connection Diagram - Mitsubishi Electric MELPRO-A Series Instruction Manual

Directional earth fault relay
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Variation
characteristics of
Input: Auxiliary power supply = AC90V~AC120V
auxiliary power
Criteria: Within ±10% of I
supply voltage
Ambient temperature: -20, +60℃
Criteria:
Temperature
Operation values of I
characteristics
Operating time: Within ±20% of operating time at 20℃
Phase characteristics: Within ±15°of operating phase at 20℃
Vibration
Maximum acceleration: 300m/s
Shock
Direction: 3 directions in forward/backward, right/left, and up/down
Criteria: No abnormality when applying two shocks in each direction
Test circuit: Between all circuits and earth (E terminal), between separate circuits (except for I
Insulation
circuits), and between the poles of contacts
resistance
Criteria: More than 10MΩ by DC500V megger.
(Note) The test is held under the condition that relative humidity is less than 80%.
Between all circuits and earth (E terminal): AC2000V, for 1 minute
Withstand voltage
Between separate circuits (except for I
Between the poles of contacts (a11-a12, a21-a22): AC1000V for 1 minute
Apply standard waveform (1.2/50 μs) to positive/negative pole for 3 times respectively.
Between ZVT/ZCT primary and earth: 60kV
Lightning impulse
Between all circuits of the relay and earth (E terminal): 4.5kV
withstand voltage
Between ZVT/ZCT secondary and control circuit: 4.5kV
Between contact terminal and power supply terminal: 3.0kV
Between terminals of power supply: 3.0kV
Apply damped oscillatory wave prescribed in JIS C 4609 for 2 seconds.
・Between ZVT/ZCT secondary and earth (E terminal)
・Between power supply terminal and earth (E terminal)
・Between terminals of power supply
Noise-proof
・Between contact terminal and earth (E terminal)
Setting: Minimum operation value and minimum operating time
Input: Rated auxiliary power supply, I
Criteria: No malfunction
Intermittently irradiate radio waves to the front panel of the relay with a transceiver of 150MHz or 400MHz
band (5W output) from a distance of 0.5m.
Radio disturbance
Setting: Minimum operation value and minimum operating time
Input: Rated auxiliary power supply, I
Criteria: No malfunction
Contact capacity
Note) For details, refer to JIS C 4609 (1990).

Internal connection diagram

0
and V
0
Peak-to-peak amplitude mm
(Acceleration m/s
Frequency
(Hz)
Forward/
Right/left
backward
10
5 (10)
16.7
Making
(Closing)
※ RD-type has shorting bar in I
circuit.
0
Y1
V
0
V
in
0
Level assessment
Y2
Directional
assessment
Z1
I
0
I
in
0
Level assessment
Z2
P1
Auxiliary
power
Power supply
supply
P2
Continuous
monitoring
Power circuit
monitoring
Fig. 2-1 Internal connection diagram
and V
operation values at rated voltage
0
: Within ±20% of operation values at 20℃
0
2
)
Up/down
2.5 (5)
0.4 (2)
2
-V
circuits): AC2000V, for 1 minute
0
0
and V
= 0
0
0
and V
= 0
0
0
DC110V 15A (L/R=0ms)
DC220V 10A (L/R=0ms)
AC110V 10A (cosφ=0.1)
X0
X1
9
Setting: Minimum operation value and
Vibration
minimum operating time
time
Input: Rated auxiliary power supply
(s)
I
and V
0
30
Criteria:
No
abnormal indication
600
DC110V 0.3A (L/R=7ms)
Breaking
AC110V 5A (cosφ=0.1)
(Opening)
AC220V 1A (cosφ=0.1)
M
V
out
0
N
Operation indicator
RUN indicator
Output
X0
a11
contact
Output contact
a12
Output
X1
a21
contact
Output contact
a22
E
= 0
0
malfunction
and
no
-V
0
0
JEP0-IL9554

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