GDKC-2000 Transformer OLTC On Load Tap Changer Tester ready for shipment End of March,we received an order from our regular customer, After a week of hard work, we finished production this Monday and already arranged the shipment on Tuesday.GDKC-2000 Transformer OLTC On Load Tap Changer Tester is used to measure and analyze the electrical performance indicators of on-loa