Insulating oil test selection scheme

Moisture mg/L

cycle Claim

66～110kV ≤35

220kV ≤25

330～500kV ≤15


During operation, the temperature should be taken into account when measuring. Try to sample when the top oil temperature is higher than 50 °C, and test according to GB7600 or GB7601.

Breakdown voltage kV

cycle Claim

Below 15kV ≥25

15～35kV ≥30

66～220kV ≥35

330kV ≥45

500kV ≥50





Test according to GB/T507 and DL/T429.9 methods

Tgδ(90°C)%

cycle Claim

300kV and below ≤4

500kV ≤ 2


Test according to GB5654

Magnetic Starters

Magnetic Starter is mainly applied to circuit of AC 50 or 60Hz,voltage up to 550V for far distance making and breaking circuit and frequent start and control motor. It has the features of small volume, light, weight, low power consumption, high efficiency, safe and reliable perfomance etc.

The types of Magnetic Starters are as following:

LC1-D Magnetic Starter
NEW Type Magnetic Starter
BLS-MB Magnetic Starter
Star-Delta Starter


Le1 D09 Magnetic Starter

Magnetic Starter,Magnetic Motor Starter,3 Phase Motor Starter,3 Phase Magnetic Starter

Ningbo Bond Industrial Electric Co., Ltd. , https://www.bondelectro.com

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