德国PTL漏电起痕测试仪 M31.10
产品简介
指定代理:德国PTL漏电起痕测试仪M31.10
产品详细信息
深圳市奥德赛创精密仪器有限公司供应德国PTL原装进口漏电起痕测试仪,电痕化测试仪,测试电流1000V,满足标准:IEC60112:2003,UL746,ASTMD3638-92,DIN53480等标准
德国PTL漏电起痕测试仪适用于照明设备、
低压电器、家用电器、机床电器、电机、电动工具、电子仪器、
电工仪表、信息技术设备的研究、生产和质检部门,也适用于
绝缘材料、工程塑料、电气连接件、辅件行业
指定代理:德国PTL漏电起痕测试仪M31.10
PTL漏电起痕试验是 IEC60112 : 2003 《固体绝缘材料耐电痕化指数和相比电痕化指数的测定方法》, UL 746A 、 ASTM D 3638-92 、 DIN 53480 等标准规定的仿真试验项目。
Tracking Resistance
It must be accepted that, in normal use, components made of insulating material may become moist and dirty. If the impurities are electrically conducting, current will flow be-tween parts of different voltage potentials - the tracking current. As a result, small flash-overs may occur, which cause thermal stresses to the surface of the insulating material.
The visual result of thermal decomposition of the insulating material caused by the tracking current is called the track. The interconnecting formation of carbonized material forms a tracking path, by which a lasting current conducting connection results. Thereafter the component cannot fulfill its intended electrical function in the majority of cases and parts may catch fire. The resistance of an insulating material to track formation is called the tracking resistance.
Test Method
The behaviour of the surface of solid insulating materials under the influence of tracking currents is to be determined as follows: The tracking currents are produced by allowing drops of an electrically conductive solution to fall centrally between two electrodes which are put on the sample and subjected to an alternating voltage.
The tests can answer the following questions:
· What highest voltage causes no breakdown up to 50 drops, while another voltage, 25 volts lower than the previously used voltage, causes no breakdown up to 100 drops? (Method CTI).
· Does no breakdown occur at a given voltage up to 50 drops each? (Method PTI).
Testing Apparatus
Platinum is specified as a material for the elec-trodes. The power supply unit is designed for voltages up to 600 V, resp. up to 1 000 V. An electronic control unit serves for releasing the drops.
In the case of the PTL tracking test apparatus, the electrode arrangement is mounted in a cabi-net with polycarbonate panes. By two wing doors, a good accessibility of the testing ar-rangement ensures a pleasant working. A safety system breaks the supply when the cabinet is opened.
Standard Outfit:
1 Pair of electrode holders, swivelling and adjustable in height, pressure force with inserted electrodes each 1 N, distance between electrodes adjustable,
1 Pair of Platinum Electrodes, with dimensions in accordance with IEC 60112, 30?chisel-edged at both ends, made of platinum, purity 99.9 %,
1 drop dispensing unit, adjustable in height, easy to dismantle, container cylinder of acrylic glass, jet nipple ?
1.0 mm, adjustable valve needle with electromagnet,
1 timer for the electromagnetic valve for an impulse every 30 seconds, impulse width adjustable for setting the drop size, with resettable counter for switching off the apparatus, with digital display for the testing time in minutes and seconds,
1 isolating transformer and variable ratio transformer for setting the testing voltage, output more than 600 VA,
voltage drop less than 10 %,
1 sample desk, precisely adjustable in height by a thumb wheel, with plate of glass,
1 adjustable resistor to limit the current to 1 A,
1 current indicating instrument 1.5 A, r.m.s., class 1.5, 1 voltage indicating instrument, true r.m.s., class 1.5,
1 excess-current relay 0.5 A, response time 2 s independent of current,
4 keys for operation mode SINGLE DROP, TESTING, OFF and ADJUSTING.
Design:
Housing papyrus white structure varnished, width 505 mm, depth 480 mm, height 740 mm, control unit in 19" rack system, testing cabinet with panes easy to replace, with safety switches, with green lamp "ready for operation" and red lamp "danger", all parts in the testing cabinet made of no corroding&nbs******bsp;corrosion protected materials, delivery including mains connection cord set, 2 safety keys, testing solution A, bag with NH4Cl, bag with Nekal BX dry, measuring cylinder 2 ml and gauge to adjust the distance between the electrodes to 4 mm and the dropping height to 35 mm, for connection to 230 V AC, 50...60 Hz,
Spare parts:
Platinum Electrodes, 1 pair, with dimensions in accordance with IEC 60112, 30chisel-
edged at both ends, made of platinum, purity 99.9 %, Article No.: M 31.81
Plate of glass for the sample desk: M 31.91
Jet Nipple of PTFE: M 31.92
Jet Nipple of stainless steel: M 31.93
Cap Nut of PTFE: M 31.96
Cap Nut of stainless steel: M 31.97
Valve Seat of PTFE: M 31.98
Cylinder of acrylic glass, Dia50 x 50: M 31.99