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Specifications
Power(Watts):
690mW
Resistance @ 25℃:
250Ω
Mfr. Part #:
YGM1 C509
Package:
Through Hole
Key Attributes
Model Number:
YGM1 C509
Product Description
Product Overview
YGM Motor Protectors PTC (Positive Temperature Coefficient) Thermistors serve as reliable thermal protectors for electrical motors. These devices offer rapid response protection for electrical machines and are designed for compact assembly into windings. Available with or without an insulated sleeve and featuring flexible connecting leads, PTC thermistors exhibit a non-linear resistance/temperature response, rapidly increasing to a very high value at a specified temperature. They are particularly suited for monitoring the windings of electric machines and for use in simple fail-safe circuitry. When a given temperature is exceeded, the circuit can be switched off via a relay or amplifier due to the PTC sensor's extremely high ohmic value.
Product Attributes
- Brand: YGM
- Type: PTC Thermistors
- Insulation: Silvered copper leads with Teflon insulation (PTFE)
- Construction Options: With or without insulated sleeve, isolated brass/aluminium housing (CEF1)
- Lead Stripping: Approx 10 mm
- Conductor Cross-section: 0.25 mm for single, double, and triple PTCs
- Origin: Canada (Division of Microtherm)
Technical Specifications
| Model | Response Temp. (NAT) | Tolerance | Colour Code | Max. Allowable Operating Temp. (Tmax) | Max. Allowable Operating Voltage (Umax) at +25C (per bead) | Max. Allowable Power Dissipation at +25C | Insulation Strength (between leads and outer insulation) | Conductor Lengths |
|---|---|---|---|---|---|---|---|---|
| YGM1 / YGM3 / CEF1 | 80 C | 5 C | white - yellow - yellow - white (YGM3) / white - white (CEF1, YGM1) | 200 C | 25 V | 690 mW | 2.5 kV | Single PTC: 500 mm 10 mm |
| YGM1 / YGM3 / CEF1 | 90 C | 5 C | green - yellow - yellow - green (YGM3) / green - green (CEF1, YGM1) | |||||
| YGM1 / YGM3 / CEF1 | 100 C | 5 C | red - yellow - yellow - red (YGM3) / red - red (CEF1, YGM1) | |||||
| YGM1 / YGM3 / CEF1 | 110 C | 5 C | brown - yellow - yellow - brown (YGM3) / brown - brown (CEF1, YGM1) | |||||
| YGM1 / YGM3 / CEF1 | 120 C | 5 C | grey - yellow - yellow - grey (YGM3) / grey - grey (CEF1, YGM1) | |||||
| YGM1 / YGM3 / CEF1 | 130 C | 5 C | blue - yellow - yellow - blue (YGM3) / blue - blue (CEF1, YGM1) | |||||
| YGM1 / YGM3 / CEF1 | 140 C | 5 C | white - yellow - yellow - blue (YGM3) / white - blue (CEF1, YGM1) | |||||
| YGM1 / YGM3 / CEF1 | 145 C | 5 C | white - yellow - yellow - black (YGM3) / white - black (CEF1, YGM1) | |||||
| YGM1 / YGM3 / CEF1 | 150 C | 5 C | black - yellow - yellow - black (YGM3) / black - black (CEF1, YGM1) | |||||
| YGM1 / YGM3 / CEF1 | 155 C | 5 C | blue - yellow - yellow - black (YGM3) / blue - black (CEF1, YGM1) | |||||
| YGM1 / YGM3 / CEF1 | 160 C | 5 C | blue - yellow - yellow - red (YGM3) / blue - red (CEF1, YGM1) | |||||
| YGM1 / YGM3 / CEF1 | 170 C | 5 C | white - yellow - yellow - green (YGM3) / white - green (CEF1, YGM1) | |||||
| YGM1 / YGM3 / CEF1 | 180 C | 5 C | red - yellow - yellow - white (YGM3) / red - white (CEF1, YGM1) | Triple PTC: 500 - 180 - 180 - 500 mm 10 mm | ||||
| General | Nominal response temperature 80 to 180 C in steps of 10 , plus 145 and 155 C | Special versions available in many housings (manufactured to customer specifications) |
Standard Resistance Values
| Device Type | Temperature (C) | Resistance () | Measuring Voltage (V) |
|---|---|---|---|
| Single PTC | 20 to NAT 20 | max. 250 | 2.5 |
| NAT 5 | max. 550 | 2.5 | |
| NAT | 1.000 | 2.5 | |
| NAT + 5 | min. 1.330 | 2.5 | |
| Single PTC | NAT + 15 | min. 4.000 | 7.5 |
| Triple PTC | 20 to NAT 20 | max. 750 | 7.5 |
| NAT 5 | max. 1.650 | 7.5 | |
| NAT | min. 4.000 | 7.5 | |
| NAT + 5 | min. 4.000* | 7.5 |
*One PTC might reach NAT + 15 C, while the second or even both of the others could still remain at room temperature.
Installation Tips for PTC Temperature Sensors in Electrical Windings
- Thermistors can only be inserted in the windings before impregnation.
- It is advisable to embed one in each phase, ideally in the center of the coil generating most heat, and generally on the outflow side of any air movement.
- Air inflow onto the temperature sensor will interfere with heat transfer.
- If using varnish/lacquer which is not chemically neutral, suitability tests must be undertaken by the customer.
- WARNING! It is very important that the sensor must be installed parallel with the copper of the winding, so that the Teflon leads can assume the form of the rest of the winding and thereby retain the high-voltage resistance rating.
Quality Standards & Resistance Characteristics
- PTCs are classified according to their nominal response temperature NAT.
- Resistance values below NAT 20 are not specified.
- Resistance when cold is not an indication of the PTCs condition; ideally between 40 - 200 ohms, but can be anywhere between 35 - 250 ohms.
- The greatest resistance change occurs between 5 C either side of NAT, being at least 15%/K.
- Random testing is carried out according to DGQ P90/P10 (DIN 40080).
- AQL values can be fixed by arrangement.
- PTC thermistors resistance values for motor protection are specified in DIN 44081/44082.
Ordering Information Example
| Quantity | Type | Temp. code | Resistance max. |
|---|---|---|---|
| 1.000 | YGM1 | C 510 | 250 ohms |
2411220237_Cantherm-YGM1-C509_C2618496.pdf
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