Multi-circuit ground fault directional relay LDG-71 series
Hikari Shoko Co., Ltd.
About This Product
Mainly used for branch circuits. Detects zero-sequence current. Voltage elements are supplied by LDG-73/83 series or LVG-7/8 series.
■Features
・This is a relay that detects ground faults in high-voltage ungrounded electrical circuits by determining the direction.
・For multiple circuits.
・LDG-71K is for current tripping.
- Compliant with "JIS C 4609 Earth fault directional relay device for high voltage power receiving".
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Product
Multi-circuit ground fault directional relay LDG-71 series
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Handling Company
Hikari Shoko Co., Ltd.
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Categories
1 Models of Multi-circuit ground fault directional relay LDG-71 series
| Product Image | Part Number | Price (excluding tax) | Commercial frequency withstand voltage | Control voltage | Excessive ground fault resistance | Exterior color | Frequency | Insulation resistance | Mass | Operating current setting value | Operating phase error | Operating temperature range | Operating time error 400% of the set current value | Operating time error: 130% of the set current value | Operating time setting value | Operating value error Io | Operation display Display method | Operation display Return method | Output contact closing capacity | Output contact configuration | Output contact return method | Output contact switching capacity For current tripping | Output contact switching capacity For voltage trip and alarm | Power consumption Always | Power consumption during operation | Test method | Vibration |
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LDG-71 |
Available upon quote |
Between the relay's electrical circuit and the outer box AC2,000V for 1 minute |
AC110V, working voltage range AC90~120V | AC120A continuous | Munsell symbol N1.5 | 50/60Hz |
Between the relay's electrical circuit and the outer box 20MΩ or more with DC500V megger |
Approximately 1.0kg | 0.1-0.2-0.4-0.6-1.0 (A) |
Vo = 150% voltage of the setting voltage value, Io = 1,000% current of the setting current value (Leading) 130°±25° (Lagging) 35°±25° |
-20℃~+60℃ |
Setting value 0.05s: 0.1 or less Setting value 0.2s: 0.1~0.2 Setting value 0.5s: 0.4~0.6 Setting value 0.8s: 0.7~0.9 Setting value 1.0s: 0.95~1.1 |
Setting value 0.05s: 0.1 or less Setting value 0.2s: 0.1~0.3 Setting value 0.5s: 0.4~0.65 Setting value 0.8s: 0.7~0.95 Setting value 1.0s: 0.95~1.15 |
0.05-0.2-0.5-0.8-1.0 (s) | ±10% |
Mag sign display (during operation: orange) Io, Vo operation display: Light emitting diode display (red) |
Magsign display: Manual return method (combined test/return switch) Io, Vo operation display: Automatic return method |
For voltage trip and alarm DC140V 5A 0.2s (L/R=7ms) For current trip AC110V 10A (cosφ=0.4) |
For current tripping Tripping current power supply terminal: S1, S2 Trip terminal: T1, T2 Current transformer connection terminal: O1, O2 |
Automatic/manual return switching (combined as test/return switch when manual return is set) | AC110V 5A, cosφ=0.4 |
AC110V 5A, cosφ=1 2A, cosφ=0.4 DC100V 0.6A,L/R=1ms 0.2A,L/R=7ms |
AC110V 4.4VA | AC110V 5.5VA | Test/reset switch (combined) |
Double amplitude 0.4mm 16.7Hz Front/back, left/right, up/down, 600s in each direction |
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About Company Handling This Product
- Japan