Zhejiang Ligao Insulation Material Co., Ltd.
Nitto Motor insulation paper
UL NO: E511513
Insulation level: 180 ~ 220 ° C
NPN is a three -layer soft composite material. The two layers outside are DuPont NOMEX® paper, and the inner layer is a polyester film.
2. Basic characteristics
1. Excellent temperature resistance and mechanical performance.
2. Excellent oil resistance, hydrolysis and chemical resistance.
3. Tipper extension fissure strength and excellent dielectric strength of polyester film.
Inquire Now
1. It is made of three layers of soft composite material bonded with aramid paper and polyester film;
2. Heat resistance grade grade E;
3. Excellent mechanical properties, dielectric and bonding; suitable for groove insulation, inter-turn insulation and liner insulation
4. Nitto insulating paper can maintain its performance even in a long-term high temperature environment.
specifications | Compound form | insulation grade | thickness | standard width |
NPN | NOMEX-PEN-NOMEX | H ~C | 0.20~0.25mm | 914mm |
The NPN tube core is 3 inches inner diameter, can be supplied in full volume or plate, and the length can be determined according to customer requirements.
Product application
NPN soft composite paper, with its excellent performance, is suitable for new energy vehicle drive motor to do slot insulation, alternate phase insulation and interturn insulation, especially oil-cooled drive motor.
Storage advice
1. Store in a dry and clean room at room temperature.
2. Do not approach the source of fire, heating and direct sunlight.
3. The storage period is generally 12 months. If the storage period exceeds, it can still be used after passing the inspection according to the technical standards.
Comparison of insulating paper performance
Ite m | Nitto | (Reference ) Aramid paper 10mils | |||||
NPN -222(SA ) | NPN - 232(SA ) | VA NPN - 232(SA ) | STRATA 3-200 | PTP - 1607(M) | |||
constitute | Aramid PEN Aramid | Aramid PEN Aramid | Aramid PEN Aramid | Aramid PA/Epoxy Aramid | Aramid PET Aramid | Aramid | |
Thickness (μ m) | 208 | 240 | 235 | 200 | 256 | 264 | |
tensile strength (N /15mm ) | MD | 267 | 354 | 346 | 227 | 476 | 396 |
T D | 195 | 271 | 307 | 160 | 576 | 265 | |
Anti-tear strength (N /20mm ) | MD | 558 | 670 | 766 | 201 | 1473 | 145 |
T D | 525 | 775 | 802 | 205 | 1252 | 546 | |
Partial discharge start voltage (PDIIV) (Vpeak ) | 1440 | 1630 | 1655 | 1430 | 1746 | 1400 | |
Breakdown voltage (BDV) (kV) | 14.4 | 16.5 | 16.1 | 13.6 | 23.8 | 9.1 | |
mass resistivity | 6.5×1015 | 2.45×1015 | 4.3×1015 | 4.8×1015 | 7.7×1015 | 1.5×1016 | |
Relative leakage index (CTI) (V) | 575 | 575 | 575 | 600 | 400 | 225 | |
Hygroscopic rate (40℃ 90% 24hr) (％) | 3.1 | 3.2 | 3.1 | 4.9 | 0.3 | 5.7 | |
Nitto insulating paper performance changes after bending
Experimental project | unit | NPN -222(SA ) | Single-layer aramid paper | empirical method |
thickness | m m | 0.210 | 0.22 | IEC 60819-2 |
tensile strength | MPa | 89 |
IEC 60819-2 | |
After folding | 91 | |||
Keep the percentage | % | 102% | ||
Dielectric Strength (BDV) | kV | 14.0 | 7.4 |
IEC 60819-2 |
After folding | 13.0 | 2.9 | ||
Keep the percentage | % | 93% | 39% | |
Partial discharge start voltage (PDIIV) | 1400 | |||
After folding |
| ― | ||
Keep the percentage | % | 94% |
