適用于樓宇對(duì)講的自恢復(fù)保險(xiǎn)絲 | ||||
產(chǎn)品簡介 |
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在樓宇對(duì)講系統(tǒng)的主控制室、分控室,再到每個(gè)住戶的單機(jī)上,每級(jí)都設(shè)計(jì)一個(gè)自恢復(fù)的保險(xiǎn)絲(pptc),自恢復(fù)保險(xiǎn)絲的電阻值為毫歐姆級(jí),不影響系統(tǒng)的正常運(yùn)行。發(fā)生異常時(shí),當(dāng)?shù)秸9ぷ麟?/td> | ||||
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符號(hào)Sign | 說明 | Definition |
Ih |
WHPTC在25℃環(huán)境溫度下的最大 工作電流 |
Hold current-maximum current at which the device will not trip at 25℃ |
It | WHPTC在25℃環(huán)境溫度下啟動(dòng)保護(hù)的最小電流 | Trip current-minimum current at which the device will always trip at 25℃ |
Vmax | WHPTC的最大工作電壓 | Maximum voltage at which the device will not trip |
Vmaxi | WHPTC在阻斷狀態(tài)下所承受的最大電壓 | Maximum voltage device can withstand without damage at it rated current |
Imax | WHPTC能承受的最大電流 | Maximum fault current device can withstand without damage at rated voltage |
Rmin | WHPTC工作前的初始最小阻值 | Minimum device resistance at 25℃ prior to tripping |
Rmax | WHPTC工作前的初始最大阻值 | Maximum device resistance at 25℃ prior to tripping |
Figure | 圖示 | The Figure of WHPTC |
Lead | 導(dǎo)線尺寸 | Lead diameter |
WH Series | -20℃ | 0℃ | 25℃ | 30℃ | 40℃ | 50℃ | 60℃ | 70℃ | 85℃ |
WH6 | 130% | 115% | 100% | 91% | 83% | 77% | 68% | 61% | 52% |
WH16 | 132% | 120% | 100% | 96% | 88% | 80% | 71% | 61% | 47% |
WH30 | 130% | 115% | 100% | 91% | 83% | 77% | 68% | 61% | 52% |
WH60 | 136% | 119% | 100% | 90% | 81% | 72% | 63% | 54% | 40% |
WH130 | 136% | 119% | 100% | 92% | 81% | 72% | 63% | 54% | 40% |
WH250 | 132% | 117% | 100% | 91% | 85% | 77% | 68% | 61% | 48% |
WH600 | 138% | 119% | 100% | 92% | 83% | 73% | 64% | 55% | 42% |