China Best Distribution Switchboard Factories – LMK1, 2-0.66/AB (BH, SDH, MSQ) series molded case current transfomer – Changan Group

Model meaning

BH, MSQ, SDH This type of current transformer specific model;
L-electric “flow”transformer; K plastic outer ”shell”
insulation; M through the ”mother’ line type;
1, 2 is the design serial number
A/8 classification:
1.A is a square type, which can pass through the cable or through the bus bar, and is generally used for monitoring.
2. B is a horizontal square hole type, which can pass through 1-3 bus bars and is generally used for monitoring.

overview

LMK 1 , 2-0 .66A, B (BH, MSO. SOH) series current transformers are used for current, energy measurement and relay protection in power systems with rated frequency of 50Hz and rated voltage of 0.66kV and below.
It has a wide range of specifications and a wide range of applications. It is suitable for all specifications with a primary current of 5A to 5000A and 1A to 4000A (including non-standard specifications). The secondary current is available in 5A or 1A. Different window types can be used in conjunction with any bus bars and cables.
The shape design is beautiful and reasonable.
Advanced indicators, domestic leading, excellent structural performance.
Compared with national products, it is small i n size, light in weight, large in capacity and high in precision,meeting the requirements of compact trend of electronic control design.
It is safe,flame-retard ant and has no electricity on the surface. The shell is made of high-pressure in jection molding of imported flame retardant materials; which has high streng thand does not burn.
Sturdy and durable, the whole product is fully enclosed, with temperature,moisture, vibration, anti-fouling, salt spray and anti-stealing.

Scope of use

Working voltage =s:0.66kV,
Rated frequency 50-60Hz,
The altitude does not exceed 1 OOOm,
The surrounding medium temperature is -5 ℃～ ＋40℃，
The relative temperature of the air does not exceed 85%;
For directattack without rain and snow,no serious pollution, no explosion, no severe vibration, no corrosion metal and places where insulating dust or steam is destroyed

MKl-0.66(BH)type installation method

Precautions

The transformer is allowed t o be connected to an AC circuit not exceeding 0.66kV. The long-term working current does not exceed 1.1 times of the rated value. allowing a short time of 1 .2 times the rated current. The Beijing time does not exceed 1 hour. The instantaneous (IS internal) operating current is not Allows over 60 times rated current( 40 times for Type 308), with the exception of non-standard and protective.
The measuring instrument is connected to the S 1 and S2 terminals. At this time, it must be noted that the total impedance (including wiring) of the connected instrument does not exceed the rated load of the transformer.
The transformer is forbidden to open the circuit twice during operation. If the secondary coil accidentally opens during power-on, demagnetization must be performed t o reduce the error.