Mitsubishi Electric MELPRO-A Series Instruction Manual page 7

Characteristics
(MDG-A4V type relay ＋ MZT type ZCT combination)
Item
Ambient temperature: –20 to +60℃ (Under the state where dew condensation or freezing does not occur)
Relative humidity: 30 to 80% on daily average
Standard use
Altitude: 2000m or lower
conditions
・The state where abnormal vibration, shock, and inclination are not applied.
・The state where it is not exposed to harmful gas, excessive dust, and water droplet or vapor.
Setting: Zero-sequence voltage V
I
Input: V
0
Criteria: Within ±10% of each setting current at the maximum sensitivity angle
Setting: Zero-sequence current I
Operation value
Input: I
characteristics
Criteria: Within ±10% of each setting voltage at the maximum sensitivity angle
V
0
Reset value
90% or more of operating value (Both I
characteristics
Setting: Zero-sequence current I
Input: I
I
Phase
characteristics
Input: V
(at the maximum sensitivity angle)
Operating time
characteristics
Resetting time Input: V
characteristics Criteria: 250ms±50ms
Setting: Zero-sequence current I
Overshoot time
Input: I
characteristics
Applied time: 0.05s
Criteria: The relay shall not operate.
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℃
= 150% of setting value
0
= 150% of setting value
0
V setting (%)
0
190V terminal input (V)
110V terminal input (V)
= 1000% of setting value, V
0
operating area (V standard):
0 0
= 0 → 150% of setting value, I
0
Time setting
Instantaneous
0.2s
0.3s or more
= 150% of setting value → 0, I
0
= 400% of setting value, V
0
and V
0
Characteristics
= 2%, Operating time T = Instantaneous
0
= 0.1A, Operating time T = Instantaneous
0
2 2.5 3 4
3.8 4.75 5.7 7.6
2.2 2.75 3.3 4.4
and V )
0 0
= 0.1A, Zero-sequence voltage V
0
= 150% of setting value
0
Max. sensitivity angle
Phase setting
Lag
Lead
Max. sensitivity angle 45°
0°
V
Lead←
Operation
area
90°
125°
145°
180°
= 0 → 130% and 400% of setting value
0
Current Ratio to the setting current
130%
50～100ms
0.1～0.3s
±20% of setting time
= 130% and 400% of setting value → 0
0
= 0.1A, Zero-sequence voltage V
0
= 150% of setting value (at the maximum sensitivity angle)
0
and V operation values at rated voltage
0 0
: Within ±20% of operation values at 20℃
0
7
5 6 7 7.5
9.5 11.4 13.3 14.25
5.5 6.6 7.7 8.25
= 2%, Operating time T = Instantaneous
0
45°
45°±10°
135°±10°
O
→Lag
35°
55°
90°
0.2 0.4 0.6 0.8 1.0A
Non-operation
area
400%
50～100ms
0.1～0.2s
±10% of setting time
= 2%, Operating time T = 0.2s
0
8 9 10
15.2 17.1 19
8.8 9.9 11
JEP0-IL9559