Service Capabilities
We offer stator bar ___ coil accelerated aging, diagnostic _____, and failure mode analysis ___ machines up to 500 _________ (MW) to:
- IEEE Std 1310 thermal _______;
- IEEE Std 522 surge ____ on turn insulation with 100 ns to 200 ns ____ time;
- IEEE Std 286 dissipation ______ (Tan δ) and tip-up;
- IEEE Std 1434 partial _________;
- IEEE Std 1043 & ____ Std 1553 voltage endurance.
Corona and RIV tests __ insulators and line hardware ___ applications up to 550 ____ and 500 kVdc to ___ C83, CSA C108, and ___ 61854.
Qualification and re-certification tests __ vehicle-mounted aerial devices for ____-____ work up to 550 ____ and 500 kVdc to ___ C225, ANSI A92.2:
- Switching impulse;
- Double-rated 50/60 Hz voltage (____ applications);
- Double-rated direct voltage (HVDC ____________).
Tests on instrument transformers __ to 550 kVac to ___ C60044-1, -2, -5, IEEE ___ C57.13:
- Lightning full wave impulse ___ chopped wave up to 2,200 kV and switching impulse __ to 1,300 kV;
- 50/60 Hz applied overvoltage ___ current transformers and capacitor _______ transformers up to 800 __ for PD and 600 __ for Tan δ;
- Induced overvoltage up to 200 Hz for inductive voltage ____________ with PD measurements;
- 50/60 Hz excitation current ___ inductive voltage transformers, saturation ____________ for current transformers.
Tests on apparatus bushings ___ wall bushings up to 550 kVac & 500 kVdc (___-_____ & composite) to CSA _88.1, IEEE Std C57.19, IEEE ___ C57.19.03, IEC 60137:
- Lightning full wave impulse ___ chopped wave up to 2,200 kV and switching impulse __ to 1,300 kV;
- 50/60 Hz applied overvoltage ___ current transformers and capacitor _______ transformers up to 800 __ for PD and 600 __ for Tan δ;
- Applied direct voltage up __ 800 kV with PD ____________, polarity reversal ≤2 minutes.
Tests on power transformers __ to 550 kVac or 500 kVdc, 310 MVA 3-ph __ 400 MVA 1-ph and 375 tonnes fully assembled (rail ______) to CSA C88, IEEE ___ C57.12.90, IEEE Std C57.113, ___ 60076:
- No load loss, load ____, and temperature rise;
- Lightning full wave impulse, _______ wave, and switching impulse;
- Induced overvoltage at 180 __ with PD measurements;
- Applied direct voltage to _____ winding (if any) with __ measurements, polarity reversal ≤2 _______.
