K401000 ZIEHL | Alldatasheet
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ZIEHL industrie-elektronik, 74523 Schwäbisch Hall, Germany, +49 791 504-0, info@ziehl.de, www.ziehl.de PTC-Resistor Temperature-Sensors MINIKA ® to DIN 44 081 and DIN 44 082 Type NAT°C Standard ID colour Part numbers: (DIN 44 081) MINIKA® K60 60 ± 5 white - grey K401000 K70 70 ± 5 white - brown K401010 K 80 80 ± 5 white - white K401005 K 90 90 ± 5 green - green K401015 K100 100 ± 5 red - red K401025 K110 110 ± 5 brown - brown K401035 K120 120 ± 5 grey - grey K401045 K130 130 ± 5 blue - blue K401055 K140 140 ± 5 white - blue K401065 K150 150 ± 5 black - black K401075 K160 160 ± 5 blue - red K401085 K170 170 ± 5 white - green K401095 K 180 180 ± 5 white - red K401090 Single PTC-resistor type MINIKA ® K PTFE-insulated strand Cu, silver-plated Lead length: 500 ±10 mm Stripping of lead-ends 10 mm standard cross-section: 0,14 mm 2 (AWG 26) weight: approx. 2,6 g General PTC-resistor temperature sen- sors (also called PTC-resistors or thermistors) are temperatur dependent semiconductor resis- tors whose main function is to alter their electrical resistance drastically when their body tem- perature reaches the nominal trip temperature NAT (TNF) PTC-resistors are used principally to protect windings in electromotors or transformers against excess tempe- rature. They also find application in machines, tooling machines especially machine bearings and controlling the temperature of power semiconductors. PTC-resistor temperature sensors are particularly suited to this purpose due to their precise response range combined with small dimensions and minimal thermal inertia at low cost. 2016-09-16 PTC-resistor Temperature Sensors
ZIEHL industrie-elektronik, 74523 Schwäbisch Hall, Germany, +49 791 504-0, info@ziehl.de, www.ziehl.de PTC-resistor Temperature Sensors Type NAT°C Standard ID colour Part numbers DIN (44 081) G2 (M4) G3 (M6) KS80 80 ± 5 white - white K302005 K302109 KS90 90 ± 5 green - green K302015 K302119 KS100 100 ± 5 red - red K302025 K302129 KS110 110 ± 5 brown - brown K302035 K302139 KS120 120 ± 5 grey - grey K302045 K302149 Triple PTC-resistor type MINIKA ® KD Screw-in sensors in housing G2 (M4) and G3 (M6) MINIKA ® KS Type NAT°C Standard ID colour Part numbers (DIN 44 082) MINIKA ® KD60 60 ± 5 white - yellow - yellow - grey K401300 KD70 70 ± 5 white - yellow - yellow - brown K401310 KD80 80 ± 5 white - yellow - yellow - white K401305 KD90 90 ± 5 green - yellow - yellow - green K401315 KD100 100 ± 5 red - yellow - yellow - red K401325 KD110 110 ± 5 brown - yellow - yellow - brown K401335 KD120 120 ± 5 grey - yellow - yellow - grey K401345 KD130 130 ± 5 blue - yellow - yellow - blue K401355 KD140 140 ± 5 white - yellow - yellow - blue K401365 KD150 150 ± 5 black - yellow - yellow - black K401375 KD160 160 ± 5 blue - yellow - yellow - red K401385 KD170 170 ± 5 white - yellow - yellow - green K401395 KD180 180 ± 5 white - yellow - yellow - red K401390 PTFE-insulated strand Cu, silver-plated Lead length: 500-180-180-500 ± 10 mm Stripping of lead ends 10 mm standard cross-section: 0.14 mm 2 (AWG 26) weight: approx. 3,6 g PTFE-insulated strand Cu, silver-platedd Lead length: 500 ± 10 mm Stripping of lead ends 10 mm standard cross-section: 0.14 mm 2 (AWG 26) weight: G2: approx. 5 g G3: approx. 14 g 180 ±10 180 ±10 0,14² Ø 1 500 ±10 2012-07-30
ZIEHL industrie-elektronik, 74523 Schwäbisch Hall, Germany, +49 791 504-0, info@ziehl.de, www.ziehl.de Design K KD KS Max. operational voltage 25 V DC 25 V DC 25 V DC Measuring voltage at NAT+15K ≤ 7,5 V DC ≤ 7,5 V DC ≤ 7,5 V DC -20...NAT+5K ≤ 2,5 V DC ≤ 2,5 V DC ≤ 2,5 V DC temperature NAT (TNF) Tolerance NAT ± 5 K ± 5 K ± 5 K Nominal resistance R at ≤ 250 Ω ≤ 750 Ω ≤ 250 Ω -20...NAT-20K VPTC ≤ 2,5 V Rated ambient temperature range -20°C...NAT+20°C Thermal response-time ta ≤ 5 s ≤ 5 s - Storage temperature -25°C...+65°C Rated insulation voltage Ueff 690 V 690 V 690 V Test voltage Ueff 2500 V AC 2500 V AC 2500 V AC Technichal Data PTC-resistor Temperatur Sensors
ZIEHL industrie-elektronik, 74523 Schwäbisch Hall, Germany, +49 791 504-0, info@ziehl.de, www.ziehl.de PTC-resistor Temperature Sensors NAT□ +15 ° -20 °C Temperatur NAT□ -20 ° NAT□ -5 ° NAT NAT□ +5 ° 4000 Ω 1330 Ω 550 Ω 250 Ω Widerstand 1650 Ω Schaltbereich Auslösegeräte
1 PTC
3 PTC in Reihe
6 PTC in Reihe
120°C 130°C 150°C Resistors Insulation classes the values recommended in the table, on the basis of trial and error. When it is intended as a preliminary warning, the value recommended as nominal response temperature is 20°C below the break temperature. For built-in PTC-resistors, we recommend the following nomi- nal cut-off temperature values for machines which are used to full capacity within permissible heating limits in keeping with their insulation class (VDE 0530). These values can then be corres- pondingly reduced for machines at less than full capacity. In some instances it might prove ne cessary to work out nominal response temperature values which deviate somewhat from The resistance of each individual sensor (according to standard) must, for temperatures related to the Nominal Response Tempe- rature (NAT), have the following values:
250 Ohms at temperatures of
-20°C to NAT -20 degrees. Measurement voltage up to max. 2.5 V
550 Ohms at a temperature of
NAT -5 degrees. Mea sure ment voltage max. 2.5 V
1330 Ohms at a temperature of
NAT +5 degrees. Measure ment voltage max. 2.5 V
4000 Ohms at a temperature
of NAT +15 degrees. Measure- ment voltage max. 7.5 V The exact values of the resistance values in the temperature ranges are not relevant. Flawless sensors should have a cold resistance of between 20 and at most 250 Ohms. Typical values (ambient temperature) lie between 50 - 150 Ohms. When the cold resistance is within these limits, short-circuit and in- terruption can be excluded. For checking the nominal response temperature, the sensors have to be heated up to this tempe- rature. In accordance with standards, trip devices switch between 1650 Ohms and 4000 Ohms. If a varying number of temperature sensors connected in series to a trip device are subjected to uniform heat, this results in the following cut-off point:
1 PTC switches at latest at NAT +15 degrees, at
earliest at NAT +5 degrees.
3 PTC (typical instance) switch at latest at NAT +5
degrees, at earliest at NAT -5 degrees.
6 PTC switch at latest at NAT, at earliest at NAT
-20 degrees. (Absolutely uniform heating of all sensors virtually never occurs in this instance).
ZIEHL industrie-elektronik, 74523 Schwäbisch Hall, Germany, +49 791 504-0, info@ziehl.de, www.ziehl.de Fitting PTC-resistor temperature sensors A maximum DC-voltage of 2.5 V can be passed through PTC- resistor temperature sensors when testing. Buzzers (voltage peaks) and similar testers should, therefore, not be used, but only meters or bridges. For all measurement voltage va- lues up to DC 2.5 V, resistance values ranging from -20°C to NAT -20 degrees should not exceeded 250 Ohms. Exact resistance values within this temperature range are unimportant. For flawless sensors, the lowest resistance value is generally above 20 Ohms. When measurement values are being determined, care must be taken that the measurement results are not influenced by the selfwarming of the sensors. In the course of the manufacturing process, we test all sensors for NAT and disruptive strength. Testing fitted PTC-resistors PTC-resistors can only be fitted before a winding has been im- pregnated by the motor manu- facturer. It is not possible to insert them at a later stage. Each winding has a sensor of its own. This means fitting 3 in single-speed motors and 6 in pole changing motors, with these sensors arranged in series and taken to separate terminals in the terminal box. Measuring circuit must be pro- vided with a separate power supply. The use of motor supply lines or other main current lines is unacceptable. Shielded supply lines must be used in case induc- tive or capacitive inter ference is produced by nearby high-voltage lines. The maximum line lenght for a cable diameter of 0.5 mm 2 is ap- prox. 500 m. For greater diameter cable, correspondingly more. Fitting should, where possible, be carried out at the warmest winding head in the exhausted- air-side of the electrical machine. Care should be taken to ensure good heat contact between the sensors and the winding when being fitted. The more intimate the connection between a PTC- resistor and its winding, the better the winding temperature is registered, especially when temperatures rise sharply. For this reason, Temperature sensors should be implanted in the middle of the end winding-heads so as to be surrounded on all sides by the winding copper. To fit the temperature sensors, the ready-shaped winding heads are spread apart in the centre using a piece of winding wood. The temperature sensors should be inserted parallel to the winding wires, care being taken that the winding wires are actually touching the temperature sensors. Cavities and air-occlusions impair heat contact and can be minimized by exerting pressure by hand to close the gap between winding wires and sensors. At the spot where the sensors are to be fitted, the winding wires on the end winding should be tightly bandaged. If the wire is more than 1 mm 2 thick, intervening spaces should be filled in with resin thickened with quartz powder. If the motor manufacturer uses special saturants or im- pregnating resins whose chemical behaviour is anything but neutral, or if he uses some special working method, he will have to test the temperature sensors' resistivity himself in the operating conditions he will use. To prevent peaks in interference voltage due to the formation of loops, we recommed that the connecting strand be fed back on the same side as the lead. Assembly Tip: Do not shorten leads which are too long, roll them up and fasten them in position. 2016-09-16 PTC-resistor Temperatur Sensors