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Upt400a Lead Type Planar Non Inductive Power Resistor
Product Details
UPT400A planar (thick film, non-inductive design) high-power resistor , lead type resistor
US Patent # 5,355,281
UPT400A is an improved version of UPT400, thick film non-inductive design, block power resistor , and the terminal uses extended high-voltage insulated wire, The creepage distance and space distance between the terminal and the bottom plate, the resistor installation terminal and the terminal are greatly improved. It is used in electrical equipment fields such as power generation, power transmission, and variable speed drives.
Technical features
1. Filled with special resin material, large creepage distance and space distance.
2. Professional design can guarantee lower inductance and capacitance values.
3. The special resistance material can ensure the stability of the resistance under the condition of high power and pulse.
4. Good pulse load capacity, see " EBG Power Resistor Pulse Electric Load Characteristics ".
5. Fix the installation with two M4 screws to ensure that the attachment pressure of the heat sink is between 120-160 Newtons.
6. Raw materials have passed UL94-V0
Specifications
1. Resistance range: 0.5Ω～1MΩ
2. Resistance accuracy: ±5%～±10%
3. Temperature coefficient: ±150ppm/°C (25°C～105°C)
Other temperature coefficient requirements can be negotiated and
ordered4 , 85°C rated power 400W, maximum working voltage not exceeding 5,000VDC.
5. Short-term overload: 700W, 70°C, 10 seconds, ΔR≤±(0.4%R + 0.001Ω).
6. Peak current: under the condition of low resistance and narrow pulse, it can reach up to 1500Amp.
7. Insulation withstand voltage: 6KVrms, 50Hz, 1min, up to 12KVrms according to requirements.
8. Partial discharge: 4KVrms, <10pC; up to 7KVrms according to requirements.
9. Insulation resistance: 500V, minimum 10GΩ .
10. Creepage distance: minimum 42mm
11. Spatial distance: minimum 14mm
12. Inductance: ≤80nH
13. Distributed capacitance (Mass): ≤110pF
14. Distributed capacitance (Parallel): ≤40pF
15. Humidity resistance: 56 days/40℃ , RH≥95%, ΔR≤±(0.25%R + 0.001Ω).
16. Temperature cycle: -55°C/+125°C (each 0.5h), 5 cycles, ΔR≤±(0.2%R + 0.001Ω).
17. High-frequency vibration: MIL-Std-202, method 204, condition D, △R ≤±(0.2%R+ 0.001Ω).
18. Life: rated power 1,000h, bottom plate temperature 85°C, ΔR≤±(0.4%R+ 0.001Ω).
19. Working temperature range: -55°C～+150°C
20. Terminal installation: M5 screw, maximum torque 2Nm.
21. Resistor installation: M4 screw, maximum torque 1.8Nm
structure size
| size | Min (mm) | Max (mm) |
| A | 65.2 | 66.8 |
| B | 45.2 | 46.8 |
| C | 24.5 | 25.5 |
| D | 0.1 | 0.2 |
| AND | 20.5 | 21.5 |
| F | 22.0 | 23.0 |
| G | 56.2 | 57.8 |
| H | 19.5 | 20.5 |
| K | 28.5 | 29.5 |
| L | 39.2 | 40.8 |
| M | 4.1 | 4.3 |
| O | 1.85 | 2.15 |
| P | 56.8 | 57.2 |
| R | 28.8 | 29.2 |
Derating Curve
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