NZ 83/500
APPLICATION
It is designated for trickling impregnation of mechanically and thermally stressed windings of alternators and electrical rotating machines for domestic appliances and hand tools of thermal class F.
Trickling impregnating resin NZ 83/500 is delivered according to TP VUKI 0189/95.
CHARACTERISTICS
Trickling impregnating resin NZ 83/500 is a solution of unsaturated polyesterimid in styrene. Before processing it must be mixed with a hardener Z 83 in the mass ratio 100:2. It is characterized by short curing time by 130°C. Winding impregnated with it has very good bonding strength, resistance to vapour solvents, transformer oils and refrigerator liquids.
Tab. 1 Processing data
| Flow time (DIN Cup 4) | 23 °C | [s] | 55 - 65 |
| Density (DIN 53 217) | 20 °C | [kg/m3] | 1050 - 1070 |
| Viscosity | 25 °C | [mPa.s] | 450 - 550 |
| Shelf-life | max. 23 °C | [month] | min. 6 |
| Flash point (PM) | [°C] | 32 | |
| Gel time1) | 100 °C | [min] | 3 - 4 |
| Pot life | max. 23 °C | [d] | min. 7 |
| Reaction time2), 3) | 100 °C | [min] | 5 - 6 |
| Exothermal temperature2), 3) | 100 °C | [°C] | 200 - 220 |
| Curing time4) | 130 °C | [min] | 15 - 30 |
| Test of effect of impregnating resin on enameled wires (LCIA, LCDA)5) | meets | ||
Tab. 2 Properties after cure
| Drying to depth2), 6) | I. 1.1.1.10) 0. 1.1.1. |
|
| Curing time of test specimen 130 °C | [h] | 1 |
| Electric strength2), 7) 23 °C 155 °C after 96h in 92% immersion in water at 23 °C |
[kV/mm] | 100 80 60 |
| Volume resistivity2) 23 °C 155 °C after 240h immersion in water at 23 °C |
[Ω.m] | 3 x 1014 2 x 1011 2 x 1013 |
| Twisted coil test8) 23 °C 155 °C |
[N] | 300 - 350 35 - 40 |
| Thermal endurance9), Test criterion: 30 % mass loss |
[°C] | 174 |
| Thermal endurance9), Test criterion: Decrease of electric strength to 12 kV/mm |
[°C] | 182 |
1) DIN 16945 Verfahren A
2) DIN 46448 Blatt 1
3) Fe-Ko thermocouple according to ASTMD 2471-71
4) Since reaching 130 °C in windings
5) STN 67 31 50 art. 11, met. B, after 60 min at 60 °C
6) 1 h by 100 °C + 1 h by 130 °C
7) Test specimens A2, cylindrical electrode diameter 6 mm
8) STN IEC 61033
9) IEC 60216
10) Specimen appearance: hard, free of leaks and bubbles, surface smooth, non tacky
Impregnating resins complied with tests done in American laboratory Underwriters Laboratories Inc.
Test protocol: UL E233982
PACKING AND STORAGE
Impregnating resin is delivered in non-returnable, clean, for other products not used drums DG 55 with capacity 216,5 l, eventually in packages according to agreement between producer and client.
Impregnating resins are stored in tightly closed packages in dry ventilated warehouse by max. +23 °C, which complies with STN 65 0201.
