EQ Harsh Environment System
Schulz Electric offers environmentally qualified form and random-wound insulation systems for rewinding harsh environment EQ motors, or for incorporation with new motors. The 4.2kV insulation systems is qualified for use in harsh environments outside containment that may be exposed to a MSLB/HELB with peak temperatures of us to 395 degrees F at peak pressures of up to 70 psig. The 600V system is qualified for inside containment LOCA conditions with peak temperatures of 425 degrees F and 77 psig. The 600V system is available for intermittent duty motors (MOV).
Inside containment random-wound continuous duty EQ insulation*†
- 40-year qualified life @ 40-50°C ambient with a 80°C rise, 10-90% RH, 2193 load cycles
- Radiation TID: 1.05 x 108 rad
- LOCA/HELB test, peak temp: 419°F, 100% relative humidity, PWR chemical spray, 104 PSIG peak pressure
Random-wound intermittent duty EQ insulation*†
- 20-year qualified life @ 50°C ambient with a 80°C rise, 0-90% RH, 1040 load cycles
- 8 OBEs to 6.67g, 1 SSE to 10g (5% damping)
- LOCA test, 425°F peak temperature, 77 PSIG pressure, PWR chemical and water spray, 100% humidity
Random-wound continuous duty radiation-only EQ insulation
- 20-year qualified life @ 50°C ambient with a 80°C rise, 0-90% RH
- 5.2 x 107 rad normal, 1.7 x 108 rad accident, 2.3 x 108 rad TID
- 8 OBEs to 6.67g, 1 SSE to 10g (5% damping)
Form-wound continuous duty EQ insulation*
- 20-year qualified life @ 50°C ambient with a 80°C rise, 0-90% RH
- 2.0 x 107 rad normal, 4.5 x 107 rad accident, 6.5 x 107 rad TID
- 8 OBEs to 6.67g, 1 SSE to 10g (5% damping)
- MSLB/HELB test, 395°F peak temperature, 70 PSIG pressure, 100% humidity
*One-year post accident operation.
† EPRI Test Report 1011980, Final Report, January 2006.
