Product Overview

Product Attributes

• Brand: YGM
• Type: PTC Thermistors
• Features: Available with or without an insulated sleeve, flexible connecting leads, silvered copper leads.
• Insulation: Teflon insulation (PTFE) for conductors.
• Conductor cross-section: 0.25 mm for single, double, and triple PTCs.
• Conductor lengths: Single PTC 500 mm 10 mm; Triple PTC 500 - 180 - 180 - 500 mm 10 mm.
• Special versions: Available in many special housings (can be manufactured to customers specifications).

Technical Specifications

Nominal response temperature range: 80 C to 180 C in steps of 10 , plus 145 C and 155 C.

Standard Resistance Values (Single PTC):

Standard Resistance Values (Triple PTC):

*One PTC might reach NAT + 15 C, while the second or even both of the others could still remain at room temperature.

Resistance values below NAT 20 are not specified. Resistance when cold is no indication of the PTCs condition. It is 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.

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, generally on the outflow side of any air movement, and if possible in the centre of the coil generating most heat.
• 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.

Ordering Information Example:

Quantity Type Temp. code No. Resistance max.

1.000 YGM1 C 510 250 ohms