Model: SKZ-250A-750V-L
Main Parameter
Max operating temperature
Min operating temperature
Rated voltage
Rated current
Rated current: DC+/DC-: 250A;
Applicable wire diameter: 70mm², Insulation outer diameter: Φ15.0±0.3;
When the DC jack is damaged, it can be quickly replaced and maintained easily;
In the process of product line making, the DC jack can be crimped first and then assembled, which can realize modular material preparation and high production efficiency;
The SKZ series GB/T DC charging socket is installed on the electric vehicle and realizes the DC charging function by cooperating with the DC charging cable. The product is developed according to the IATF 16949 automotive standard and meets the requirements of GB/T 20234.3-2015 and RoHS.
| Electrical properties | |
| Rated current | DC+/DC-：250A； |
| Wire Diameter | DC+/DC-: 70mm²; Outer diameter: Φ15.0±0.3 |
| Rated voltage | DC+/DC-: 750V DC; S+/S-/A+/A-/CC2: 30V |
| Withstand voltage | 3000V AC / 1min. (DC + DC- PE) |
| Insulation resistance | 1000V DC≥100MΩ(DC+/DC-/PE) |
| Terminal temperature rise | <50K |
| Mechanical properties | |
| Insertion/withdrawal cycles | >10,000 times |
| Insertion/Withdrawal force | <100N |
| Environmental properties | |
| Ambient temperature | -40℃~+125℃ |
| Degree of Protection | IP55 |
| Salt spray class | 96h |
| Main material | |
| Shell | PA |
| Insulation part | PA |
| Sealing part | Silicone Rubber |
| Contact part | Copper alloy |
| Mounting | |
| Mounting type | Front mounting (0 to 90 degree frontal inclination possible) |
| Mounting hole diameter | 7 mm (ø) |
| Fixing screws | M6 |
Temperature Sensor
NTC10K temperature monitoring principle:
2 temperature sensors within the DC+ and DC- terminals
Temperature sensor model: NTC R25℃=10KΩ±1%, curve coefficient B25℃/50℃=3950, allowable operating current: 2mA max.
According to the provisions of Article 9.1 of GB/T 18487.1-2015, when the charging current is >16A, the power supply socket and the vehicle socket should be equipped with a temperature monitoring device. Temperature sensors are arranged in the DC+ and DC- holes of the charging socket, and there are two temperature sensors in the DC charging socket. Customers can formulate charging strategies based on temperature feedback.
Suggested temperature control: When the temperature reaches 100°C, limit the current, and stop charging when the temperature reaches 120°C.
Reason for the requirement: GB/T20234 stipulates that the operating temperature of charging products is -30°C~+50°C, the maximum temperature rise of the terminals is 50°C, and the current should be limited when the temperature reaches 100°C to avoid continuous temperature rise. In order to avoid the aging of the internal parts and cables of the charging product under high temperature conditions, the charger should stop charging when the temperature reaches 120°C.
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