6000W planar water - cooled high - power resistor.

1. Cooling method

• The resistor body adopts an alloy sheet reciprocating structure, and is directly cooled by circulating high - purity water (or 50% ethylene glycol). It has better heat dissipation effect compared with the traditional indirect heat dissipation mechanism, and is applied in the fields of power generation, power transmission, electrical drive and other electrical equipment.

2. Structural design

• PVDF all - plastic resistor shell and water channel are adopted to make the product have good high - voltage resistance, excellent high - temperature anti - aging and anti - acid properties.

• The spiral water channel design makes the water flow without resistance and dead - end water. The symmetrical alloy resistor band minimizes the inductance and capacitance of the resistor body.

• The resistor chip is formed by gold foil stamping, the gap of the resistor band is uniform and reliable, and the special process installation and fixation make the product have excellent anti - vibration/impact performance.

• Shell material: PVDF, CTI≥600, Flame retardancy: UL94 - V0

1. Resistance range: 0.1Ω - 100Ω, other resistance values can be negotiated for order

2. Resistance accuracy: ±1% - ±5%

3. Temperature coefficient: ≤±150ppm/°C (25°C - 100°C)

4. LCR4000 load power

• 2L/min: Pmax = 2.75kW

• 3L/min: Pmax = 4kW

• Cooling water conductivity requirement: <0.5μS/cm

• When the inlet water temperature is ≤65°C, the relationship between water flow rate and rated power is as follows:

5. LCR6000 load power

• 6L/min: Pmax = 6kW (import and export water pressure difference ≤1.2 bar, reference value)

• 8L/min: Pmax = 8kW (import and export water pressure difference ≤1.7 bar, reference value)

• Cooling water conductivity requirement: <0.5μS/cm

• Cooling water temperature requirement: outlet water temperature ≤65°C (avoid boiling)

• Cooling water temperature rise calculation formula: ΔT=(P60)/(L4200), where P: rated power (W), L: water flow rate (L/min)

• When the inlet water temperature is ≤50°C and the cooling water temperature rise is ≤15°C, the relationship between water flow rate and rated power is as follows:

6. Short - time overload: 1.5 times the rated power, 5s, ΔR≤±(1%R + 0.05Ω)

7. Maximum peak voltage: 8.5kV

8. Insulation layer withstand voltage: 11kVrms, 50Hz, 1min

9. Spacing distance: minimum 17mm

10. Inductance: ≤10μH

11. Distributed capacitance (mass): ≤100pF

12. Vibration test: amplitude 0.75, frequency 10 - 55 Hz, 2h, ΔR≤±(1%R + 0.05Ω)