Overcurrent relay LOC-23
Hikari Shoko Co., Ltd.
About This Product
Protects high voltage circuits from overcurrent caused by short circuits and overloads.
■Features
・Four time-limiting characteristics
Protection coordination is now easier to achieve due to the operating time characteristics of ultra-reverse time limit, strong reverse time limit, reverse limit time, and limited time limit.
・Self-diagnosis function
Automatically checks the internal circuit periodically and detects and displays any abnormalities.
・Operation display
The type and phase of the accident can be determined by the R phase, T phase, and instantaneous operation display.
・Operation lock function
It is possible to stop both time-limited and instantaneous operations, making testing easier.
- Lighter weight
Approximately 30% lighter than conventional products.
・Compliant with JIS standards
Compliant with JIS C 4602 2017 Overcurrent Relays for High Voltage Power Receiving.
■Features of time-limited operation characteristics
・Super anti-time characteristic
It has a characteristic that is inversely proportional to the square of the current and matches the heat generation characteristics of Joule heat, making it suitable for overload protection of electrical equipment. Additionally, it has characteristics that make it easy to coordinate protection with thermal MCCBs that utilize Joule heat and protective equipment such as fuses.
・Strong reaction time characteristic
It matches the overload withstand characteristics of electrical equipment, so it is suitable for protecting transformers, etc.
・Inverse time characteristic
Suitable for short-circuit protection of power transmission lines where current fluctuates significantly due to an accident at the same point. This characteristic facilitates time coordination between the power supply side and the load side.
・Limited time characteristic
When the input current exceeds a certain level, it operates for a certain amount of time regardless of the current magnitude, which makes it easy to achieve time-limited coordination.
■Features
・For current transformer secondary current trip method.
・It has operating time characteristics such as ultra-reverse time limit, strong reverse time limit, reverse limit time, and limited time limit.
- Has a self-diagnosis function.
- Compliant with "JIS C 4602 Overcurrent Relay for High Voltage Power Receiving".
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Product
Overcurrent relay LOC-23
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Handling Company
Hikari Shoko Co., Ltd.
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Categories
1 Models of Overcurrent relay LOC-23
| Product Image | Part Number | Price (excluding tax) | Commercial frequency withstand voltage | Current setting value | Frequency | Insulation resistance | Lightning impulse withstand voltage | Noise resistance 1/2 decay time | Noise resistance 1st peak voltage | Noise resistance Repetition frequency | Noise resistance Vibration frequency | Noise resistance application conditions | Noise resistance application point | Noise resistance test circuit output impedance | Nominal operating time Current magnification 300% | Nominal operating time Current magnification 700% | Operating temperature range | Operating time characteristics | Operating time setting value | Operating time tolerance | Operating value tolerance | Operation display | Output contact Alarm contact | Output contact Trip contact | Output contact closing capacity | Output contact open circuit capacity | Rated consumption VA | Rated current | Return method | Self-diagnosis display | Starting display | Tripping method |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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LOC-23 |
Available upon quote |
AC2,000V for 1 minute AC1,000V for 1 minute |
Timed element: Lock-3-3.5-4-4.5-5-6A Momentary element: Lock-10-20-30-40-50-60-80A |
50/60Hz | 20MΩ or more with DC500V megger | Waveform (1.2/50μs) Positive and negative 3 times each 4.5kV | 3~6 cycles | 2.5kV±10% | 400Hz±10% | 1MHz±10% | Apply current of 80% of time-limited element setting value |
Between all terminals for current transformer secondary circuit and outer box (between all C1R, T1R, C1T, T1T and outer box) Between terminal poles for current transformer secondary circuit (between C1R and T1R) (between C1T and T1T) |
200Ω±20% |
Timing element: 3A Operating time scale: 10 Ultra-reciprocal time (EI) 10s Strong reaction time limit (VI) 6.75s Inverse time limit (NI) 6.3s Limited time (DT) 2s Instantaneous element 200% 0.05 seconds or less at overcurrent |
Timing element: 3A Operating time scale: 10 Super reciprocal time (EI) 1.67s Strong reaction time limit (VI) 2.25s Inverse time limit (NI) 3.53s Limited time (DT) 2s Instantaneous element 200% 0.05 seconds or less at overcurrent |
-20℃~+60℃ |
Extremely inverse time (EI) Strong reaction time limit (VI) Inverse time limit (NI) Limited time (DT) |
Timed element: 0.25-0.5-1-1.5-2-3-4-5-6-7-8-9-10-15-20-30 Instantaneous element: 0.05 seconds or less |
For operating time setting value (nominal operating time scale: 10) Time-limiting element: 300% Overcurrent ±17% Time-limiting element: 700% Overcurrent ±12% |
For current setting value Time-limited element: ±10% Instantaneous element: ±15% |
R-phase operation, T-phase operation, instantaneous operation (Magsine display (orange) x 3) |
1a contact 1 set AC100V 5A (cosφ=1) AC100V 1.5A (cosφ=0.4) DC100V 0.3A (L/R=0ms) DC100V 0.15A (L/R=7ms) |
2 sets of 1b contacts | AC12V 60A 100 times | AC20V 100A 2 times | 5VA | AC5A |
Manual return: Mag sign display Automatic return: trip contact, alarm contact, start indication |
In case of abnormality, the start display blinks. | Light emitting diode display (red) | Current transformer secondary current trip |
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About Company Handling This Product
- Japan