High-Voltage DC Relay NVR6V-500 for New Energy Vehicles - China Factory Suppliers for Reliable Power Solutions
| Category | Performance Indicators |
|---|---|
| Electrical lifespan (resistive load) | 60V DC/500A connection: 10,000 times; 1000V DC/500A interruption: 200 times; 1500V DC/500A interruption: 100 times |
| Mechanical lifespan | 200,000 times |
| Insulation resistance | Disconnecting between contacts / Closing contacts and coil: Before the test, ≥ 1000 MΩ @ 1000 V DC; After the test, ≥ 50 MΩ @ 1000 V DC |
| Medium withstand pressure | Between the disconnected contacts: Before the test, ≥ 3000V AC (50/60Hz, 1 minute); After the test, ≥ 2250V AC; Between the closed contacts and the coil: Before the test, ≥ 2500V AC; After the test, ≥ 1875V AC |
| Environmental resistance performance | Mechanical impact strength: 50G; Stability: 20G; Random vibration: 10 - 2000Hz / 5G; Working/storage temperature: -40℃ to +85℃; Supports use at altitudes below 4000m. |
- Install vertically, using M6 specification installation screws. The locking torque should be controlled within 6 to 8 N·m to avoid damaging the housing due to excessive tightness.
- The thickness of the copper busbar at the load end is recommended to be 8 to 10 mm. The opening size of the holes should be matched according to the terminal specifications: M6 terminals have a φ6.0 to 6.5 mm hole, M8 terminals have a φ8.0 to 8.5 mm hole, and M10 terminals have a φ10 to 10.5 mm hole.
- It is not recommended to install two copper busbars on the same side terminal to avoid high-voltage short circuiting and sparking.
- Avoid installing near strong magnetic fields (around transformers and magnets) and heat-generating devices.
- When the altitude exceeds 2000m, the usage should be reduced according to the requirements of IEC 60947-1 standard.
- The static contacts are made of pure copper. If the storage time exceeds 3 months, the parameters need to be re-tested before use; if the contacts are oxidized and discolored, they need to be ground to remove the oxide layer before being put back into use.
- The working environment temperature should not exceed 130℃ for long-term operation, and should not exceed 180℃ for short-term operation. Temperatures above 180℃ may cause the relay to fail.
- In overcurrent scenarios, a suitable specification fuse needs to be matched: when the current exceeds 8000A, if the fuse fails to melt in time, the contacts may open, and in extreme cases, there is a risk of fire and explosion. A complete overcurrent protection mechanism needs to be provided.
- For inductive loads (L/R ≥ 1ms), a surge absorption device needs to be connected in parallel; otherwise, it will reduce the electrical lifespan and cause poor disconnection.
- If the relay falls, it is generally prohibited to use it again to avoid internal structure damage leading to faults.
Q: What is the rated capacity and application scope of the NVR6V-500 relay?
A: The NVR6V-500 is a 500A-level high-power DC relay designed for high-voltage DC systems of 1500V and below. It is widely used in energy storage systems, new energy vehicles, DC fast chargers, and photovoltaic grid-connected systems.
Q: What are the installation requirements and torque specifications?
A: The relay should be installed vertically using M6 specification screws. The locking torque must be controlled within 6 to 8 N·m to prevent housing damage. Additionally, avoid placing the relay near strong magnetic fields or heat-generating devices.
Q: How do temperature limits affect the operation of the NVR6V-500?
A: The relay supports working/storage temperatures from -40℃ to +85℃. For operating environments, the temperature should not exceed 130℃ for long-term operation, and must never exceed 180℃ for short-term operation to avoid potential product failure.
Q: What maintenance is required if the relay is stored for a long time?
A: The static contacts are pure copper. If stored for over 3 months, parameters must be re-tested before use. If the contacts show oxidation or discoloration, the oxide layer must be ground off before putting the unit into service.
Q: Can a dropped NVR6V-500 relay be reused?
A: No. If the relay is dropped, it is prohibited to reuse it. Dropping can cause internal structural damage that may lead to operational failure, even if there is no visible external damage.
Q: What protection is needed for overcurrent and inductive load scenarios?
A: For overcurrent protection, a properly matched fuse must be used to prevent contact opening or fire risk above 8000A. For inductive loads (L/R ≥ 1ms), a surge absorption device must be connected in parallel to maintain electrical lifespan.
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