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产品名称：
WTRD1 PTC过热保护继电器
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WTRD1 PTC过热保护继电器
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Introduction:
主要通过PTC监测电机温度的继电器,通过内置于电动机的热敏电阻探头感测电机绕组温度，保护最为直接、准确； 可选择手动复位、自动复位； 保护标准电动机热过载； 保护变阻器、轴承、电容器等易发热器件； 适合于频繁起动、恶劣环境等特殊状况应用；此产品是中国继电器市场唯一通过美国ABS船级认证产品. |
| It is a Winding Protection relay based on thermistor (PTC) . It offers protections against Over heating of the windings of pumps, motors, transformers, alternators etc. & sense the temperature with the help of PTC thermistor. It can be used with single or triple PTC & also with 6 or 9 PTCs as a special case. It can used for AC/DC motor, generator, transformer, winding protection against over heating of SCRs & Bus Bars. | |
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| Features: |
· Monitors Overload & Phase Loss, Phase Sequence by sensing Overheating of Windings.
· Operates with Embedded PTC sensors in the motor / transformer windings.
· Suitable for any PTC Thermistor.
· Sensor Short / Open Condition Monitoring.
· 1 CO output rated 230V AC / 5A (Resistive)
· Auto (Optional Manual) Reset.
· DIN Rail mounted Enclosure.
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型号及名称 |
WTRD1 |
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绕组保护继电器（PTC热敏继电器） |
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供电电压 |
48/110/220-240/380-415/440VAC/ |
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辅助 |
24VDC±10% |
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输出触点 |
1CO |
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跳闸设置 |
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热敏传感器健康性 |
40Ω-4kΩ |
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热敏传感器跳闸 |
4.1Ω-5.5KΩ |
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热敏传感器开启 |
5.6K Ω及以上 |
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热敏传感器短路 |
40Ω或更低 |
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跳闸时间延迟 |
少于2秒 |
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重置模式 |
自动/人工（可选） |
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尺寸（mm） |
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外形尺寸（长宽直径） |
76x30.5x117.5 |
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指南针尺寸（长宽） |
68mm中央对中央 |
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重量 |
300克 | |
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| Application Areas: |
| Injection Molding machines Machine tools Crane & hoist motors Compressors & fan motors | |
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| Technical Specifications: |
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Specifications |
| 1 |
Supply Voltage |
Auxiliary 48 / 110 / 220-240 24 V DC ±10% |
| 2 |
Output Contacts |
1 CO |
| 3 |
Trip Setting |
Thermistor Sensor Healthy 40 ohm - 4 K ohm; Thermistor Sensor Trip 4.1 K ohm - 5.5 K ohm; Thermistor Sensor Open 5.6 K ohm & above; Reset 1.5 K ohm - 1.8 K ohm for 1/3 PTC 2.2 K ohm - 2.8 K ohm for 6/9 PTC |
| 4 |
Trip time delay |
Less than 2 secs. |
| 5 |
Resetting Mode |
Auto / Manual (optional) |
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Dimensions (mm) |
Overall (L x W x D) 76 x 30.5 x 117.5; Mounting (L x W) 68 mm centre to centre |
| 7 |
Weight |
300 gms. | 
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