❓ CT Questions?
Q: Accuracy class? A: 0.2S/0.5 for billing. 5P/10P for relays.
Q: Open secondary? A: NEVER. Voltage >1000V. Dangerous.
Q: Recalibration? A: Every 5-10 years for metering.
📖 More: https://duomatech.com/ljwd-10-12-oil-immersed-current-transformer-with-steel-tank-outdoor-3/
❓ CT Questions?
Q: Accuracy class? A: 0.2S/0.5 for billing. 5P/10P for relays.
Q: Open secondary? A: NEVER. Voltage >1000V. Dangerous.
Q: Recalibration? A: Every 5-10 years for metering.
📖 More: https://duomatech.com/lzzbj9-10-a-b-c-10kv-indoor-cast-resin-current-transformer/
Electrical installation. Jerusalem or Tel Aviv? [approximately 1920 to 1946] 1 negative : glass, dry plate ; 4 x 5 in.
#Jerusalem #TelAviv #CurrentTransformer #dryplatenegatives #photography
thomaselectric
Matson Collection