RDP2-J3型恒功率電熱帶
RDP2-J3型恒功率電熱帶
Model RDP2-J3 constant watt heating cable
型號含義 Model explanation
| 單位長度功率 Unit length watt:W/m |
| 絕緣層代號：J3-F46氟塑料 Insulation code: Fluroplastic |
| Q：加強型，普通型（省略）Reinforced, common(omitted) |
| 2：芯數，單相220V 工作電壓 2 core no., single phase 220V working voltage |
| RDP：并聯型電熱帶 Parallel heating cable |
例：
RDP2-J3-20：表示絕緣材料為F46氟塑料，20W//m的單相恒功率電熱帶。
RDP2（Q）-J3-30：表示絕緣材料為F46氟塑料，30W/m加強型恒功率電熱帶。
E.g:
RDP2-J3-20:insulation material is F46,20w/m single-phase constant watt heating cable
RDP2（Q）-J3-30：Insulation material is F46,30w/m reinforced constant watt heating cable
產品結構與工作原理
Working principle
電源母線為二根平行絕緣銅線，在內絕緣層上纏繞電熱絲，并將電熱絲每隔一定距離（即“發熱節長”）與母線連接，形成連續并聯電阻（見圖1），母線通電后，各并聯電阻發熱，因而形成一條連續的加熱帶。
The bus wires are two paralleled insulated copper wires, the heating fiber wraps around the inner insulation layer. And the heating fiber connects to the bus wires at interval points(heating section length),so each section is paralleled connection and generate the heat continuously.
規格及主要技術特性 Dimension and main technical features
| 產品型號 Model | 額定電壓 Reted voltage (V) | 額定功率 Rated watt (W/m) | 發熱節長 Heating section length (mm) | 使用長度 Max. usable length (m) | 流體維持溫度 Max.holding temperature for the liquid(℃) | |
| 普通型 Common | 加強型 Reinforced | |||||
| RDP2-J3-10 | RDP2(Q)-J3-10 | 220 | 10 | 1310 | 225 | 130 |
| RDP2-J3-20 | RDP2(Q)-J3-20 | 220 | 20 | 930 | 160 | 120 |
| RDP2-J3-30 | RDP2(Q)-J3-30 | 220 | 30 | 730 | 145 | 95 |
| RDP2-J3-40 | RDP2(Q)-J3-40 | 220 | 40 | 630 | 126 | 75 |
注：流體維持溫度，是指管道內介質需要維持的工作溫度，一般不宜超過本表規定值。
Note: The max. holding temperature is the maximum temperature needed for the media in the pipes, not exceeding the value stated in this table.
常態絕緣電阻； ≧50MΩ/hm Normal insulation resistance:: ≧50MΩ/hm
介電強度：-2000V 50Hz/1min Dialectic force: -2000V 50Hz/1min
絕緣層材料：F46氟塑料 Insulation:F46
F46耐高：205℃ F46 Max. temperature：205℃
防爆標志：e II T3 Anti-explosive: e II T3
防護等級：IP54 Protection grade:IP54
產品截面尺寸 Section size
RDP2-J3-10 普通型 RDP2（Q）-J3-10 加強型 RDP2-J3-10 Common RDP2（Q）-J3-10 Reinforced
RDP2-J3-20 普通型 RDP2（Q）-J3-20 加強型 RDP2-J3-20 Common RDP2（Q）-J3-20 Reinforced
RDP2-J3-30 普通型 RDP2（Q）-J3-30 加強型 RDP2-J3-30 Common RDP2（Q）-J3-30 Reinforced
RDP2-J3-40 普通型 RDP2（Q）-J3-40 加強型 RDP2-J3-40 Common RDP2（Q）-J3-40 Reinforced
圖2 RDP2-J3型電熱帶截面尺寸
Fig:2 Model RDP2-J3 heating cable section size
產品特點及應用場合
Features and applications
恒功率電熱帶單位長度的發熱量恒定，使用的電熱帶越長，輸出的總功率越大，該電熱在現場能按實際需要長度任意剪切此外富有柔軟性，可以方便地緊貼管道表面敷設。電熱帶外層的編織層不僅起著傳熱和散熱作用提高電熱帶的整體強度，同時還能作為安全接地線。
恒功率電熱帶與溫控器配合使用時，能較精確維持管道內的介質溫度。
The constant watt heating cable can set off constant heat. The more the cable, the bigger the heat generated. The cable can be cut in any length when necessary. It can laid-up against the surface of the pipes. The outer braid layer is used for dissipate heat as well as safe ground wire.
If it is used together with temperature controller, the cable can hold the temperature in the pipes precisely.
加強型電熱帶是在普通電熱帶外層包覆一層絕緣層，其余結構及原理和普通型電熱帶相同，加強型電熱帶較普通電熱帶防腐能力強，機械強度更高，它更適合于防爆場合的埋敷地下或有腐蝕性氣體的場合使用。
The reinforced heating cable is derived from wrapping the insulation layer outside the common heating cable, and other structure is the same. The reinforced cable has more resistance to erosion, mechanical strength and suitable in anti-explosive place or in erosivegas.
| 由于母線截面積有限，為避免太大引起功率下降，每根電熱帶的使用長度按表1選用；當選用如圖3的供電方法時，每個電源點的管線伴熱長度為電熱帶使用長度的兩倍。 本電熱帶適用管道，閥門，泵體的伴熱，防凍和保溫，或者維持儀表管線的工藝溫度，如 1、在正常情況下連續流動的低凝固管線使用，可避免介質因停止流動而凝固。 2、需要嚴格控制作業溫度的液體管線的伴熱和保溫（須配用溫度控制器）。 3、寒凍地區自來水管線及閥門的防凍，排水管，抽水管和冷凝管路的防凍。 4、沿海井臺管道的伴熱防凍。 5、一般管線儀表管線的伴熱保溫。 6、井口采油樹伴熱（取代水套爐），污水井伴熱。 7、機場跑道防冰雪封凍。 8、混凝土預制件防凍養護。 | As the bus line cross section is limited, in order to avoid the decreasing of the capacity, refer to Table 1 to the proper length for each heating cables. If the power supply is as shown in figure3 ,each heating length from each power point is twice the maximum usable length. The heating cable is used for heating or holding the temperature of pipes, valves and pumps. For example: 1. Applicable on the pipes in which flowing liquid will not become solid due to coolness. 2. Heating and holding the temperature precisely for the liquid pipelines. 3. Avoid freezing of the gape water pipelines, drainage pipes and condensing pipes. 4. Heating and anti-freezing of the sea oil pipelines 5. Holding the temperature of the common pipelines and instrument pipes. 6. Heating the oil well and sewage wells 7. Heating the airport road to avoid ice freezing. 8. Heating the concrete prepared parts. |
防爆說明
Anti-explosive
| 該單相恒功率電熱帶按GB3836.1-83和GB3836.3-83即爆炸性環境用防爆電器設備“通用要求”和“增安型電器設備e”要求設計制造，防爆等級為“e II T3”，產品具有不延燃性，并通過密閉式電熱器要求的試驗與防爆電器附件配套后，適用于不受外力直接沖擊的工廠一區、二區爆炸性氣體混合物T3組合物場所使用。 | This constant watt heating cable is made as per GB3836.1-83 and GB3836.3-83, i. e, general requirement for the anti-explosive equipment and safe electric apparatus grade E. The anti-explosive grade is “ e II T3”. Due to its non-extensive burning, the cable is used on the anti-explosive parts which are applicable in the area 1 and area 2 in factory under explosive gas mixture T3. |
