Multi-circuit ground fault directional relay maintenance product LDG-21B series
Hikari Shoko Co., Ltd.
About This Product
The LDG-21B/21BN is a replacement for the multi-circuit ground fault directional relay LDG-11/11D/11DN (discontinued product), and is compatible with the ground fault voltage relay LVG-2/2S (discontinued product) or LVG-2B/2C. This is a multi-circuit earth fault directional relay that can be combined. LDG-21B/21BN inputs only the zero-sequence current (Io), and the phase signal of the zero-sequence voltage is input from the ground fault voltage relay through the M and N terminals. Although the external shape is different from LDG-11, 11D, and 11DN, the mounting dimensions are the same.
■Features
・This is a relay that detects ground faults in high-voltage ungrounded electrical circuits by determining the direction.
・This is a maintenance item for the LDG-11D series. Used in combination with LVG-2 series.
・No plate processing is required. Comes with a dedicated mounting plate.
- 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 maintenance product LDG-21B 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 maintenance product LDG-21B series
| Product Image | Part Number | Price (excluding tax) | Commercial frequency withstand voltage | Control voltage | Effect of control voltage | Effect of temperature | 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 Operating current value | Operation display Display method | Operation display Return method | Output contact configuration | Output contact return method | Output contact switching capacity | Power consumption Always | Power consumption during operation | Test method | Vibration |
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LDG-21B |
Available upon quote |
Between the relay's electrical circuit and the outer box AC2,000V for 1 minute |
AC110V, working voltage range AC90~120V |
At AC90~120V (relative to actual measurements under standard conditions) Operating current ±5%, operating time ±10% |
At -20℃~+60℃ (relative to actual measurements under standard conditions) Operating current ±10%, operating time ±10% |
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 1.7kg | 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) 110°~155° (Lagging) 15°~60° |
-20℃~+60℃ |
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 0.2s: 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 |
0.2-0.5-0.8-1.0 (s) | ±10% |
Mag sign display (during operation: orange) Io, Vo operation display: Light emitting diode display (red) |
Magsign display: Manual return method (return switch) Io, Vo operation display: Automatic return method |
For current tripping 1a, 1c | Manual return switching (return switch) |
AC110V 5A, cosφ=1 2A, cosφ=0.4 DC24V 5A,L/R=1ms 2A,L/R=7ms DC100V 0.6A,L/R=1ms 0.2A,L/R=7ms |
AC110V 4.4VA | AC110V 5.5VA | Test switch |
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