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WTRD1 PTC過熱保護繼電器
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Introduction:
主要通過PTC監測電機溫度的繼電器,通過內置於電動機的熱敏電阻探頭感測電機繞組溫度，保護最為直接、準確； 可選擇手動復位、自動復位； 保護標準電動機熱超載； 保護變阻器、軸承、電容器等易發熱器件； 適合於頻繁起動、惡劣環境等特殊狀況應用；此產品是中國繼電器市場唯一通過美國ABS船級認證產品.
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| 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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型號及名稱 |
WTRD1 |
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繞組保護繼電器（PTC熱敏繼電器） |
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供電電壓 |
48/110/220-240/380-415/440VAC/ |
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輔助 |
24VDC±10% |
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輸出觸點 |
1CO |
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跳閘設置 |
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熱敏感測器健康性 |
40Ω-4kΩ |
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熱敏感測器跳閘 |
4.1Ω-5.5KΩ |
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熱敏感測器開啟 |
5.6K Ω及以上 |
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熱敏感測器短路 |
40Ω或更低 |
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跳閘時間延遲 |
少於2秒 |
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重置模式 |
自動/人工（可選） |
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尺寸（mm） |
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外形尺寸（長寬直徑） |
76x30.5x117.5 |
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指南針尺寸（長寬） |
68mm中央對中央 |
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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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