JLS-10KY Switchgear
The product consists of JLS-10 combined transformer, ZW43-12/630 column vacuum circuit breaker and BXK control box. It shares the installation base with the transformer and high-voltage switch.
Categories:
Switchgear
1. Overview
The product consists of JLS-10 combined transformer, ZW43-12/630 column vacuum circuit breaker and BXK control box. It shares the installation base with the transformer and high-voltage switch. The structure is simple and reliable, which reduces the on-site installation workload of the product and maintains the convenience of independent maintenance and expansion of the transformer and switch. Through the user-provided negative control terminal with prepaid function or the optional company's GPRS-type negative control terminal, the remote prepaid function is realized and the power consumption prepaid management is an ideal product for reforming the power consumption system, realizing the commercialization of electricity, and effectively controlling electricity.
2. Model and meaning

3. Structure introduction
This type of combined transformer adopts a fully enclosed structure of the user's external epoxy resin. It is made of three fully insulated single-phase voltage transformers, "Y"-shaped wiring A, B, and phase C, respectively, and is suitable for power metering in power lines of 10kV and below. To prevent power theft, the secondary terminal sealing plate can be directly poured into a conspicuous position on the surface of the casting body, and a lead seal can be added to effectively prevent power theft.
4. Technical parameters
1. Rated insulation level: 12/42/75kV
2. Product Standard: GB/T 20840.4-2015 "Combination Transformer"
3. Dirt level: Level IV
4. Load power factor: COSΦ=0.8 (hysteresis)
5. Ambient temperature: -25℃ ~ +45℃
6. Altitude: £1000m
7. Installation location: outdoor
8. Rated secondary current: 5A, 1A
9. Instrument security coefficient: 10
10. Rated primary current: 5 ~ 600A (double conversion ratio)
11. Rated capacity: PT: 0.2 grade, 15VA; CT: 0.2S grade, 10VA;
12. Rated short-term thermal current (Ith): 100In/1s
13. Rated dynamic stable current (Idyn): 2.5Ith
14. Rated voltage ratio: 10/Ö3/0.1/Ö3 (kV) or 10/0.1, 0.22k V power winding can be used for short-term loads such as circuit breaker closing and opening, energy storage, etc.
15. Switch parameter table
|
project |
parameter |
|
Rated current |
630A |
|
Rated short circuit breaking current |
20 |
|
Rated peak withstand current (peak) |
50 |
|
Rated short circuit closing current (peak value) |
50 |
|
Rated short-term withstand current 4s |
20 |
|
Rated short circuit current break times |
30 |
|
Mechanical life |
10,000 times |
|
Contact distance mm |
9±1 |
|
Contact closing bounce time ms |
£2 |
|
Three-phase split and closing different periods ms |
£2 |
|
Closed time ms |
25-45 |
|
Opening time ms |
23-45 |
|
Secondary loop operating voltage |
AC220 |
|
The distance between the centers of the phases mm |
280±1.5 |
|
Housing material |
Stainless steel shell |
5. Appearance and installation dimensions
Three components

Two components

Notes:
If the user has special requirements, he or she can negotiate with our factory to confirm.
Key words:
High voltage metering box
Previous
Previous
Get A Quote
Leave your contact information and get a free product quote
Related Products
Zhengzhou KBT Transformer Instrument Co., Ltd. is a specialized production enterprise mainly based on power transformers, which integrates product development,production, sales, service and technology consulting.
This series of current transformers features an epoxy‑resin‑cast, fully enclosed insulation design. They are suitable for use in power systems with a rated frequency of 50 Hz or 60 Hz for electrical energy metering. These transformers eliminate oil contamination and fire hazards, reduce maintenance requirements, and meet the demands of oil‑free operation.
The LZZB current transformer is an epoxy‑resin‑cast, fully enclosed device, primarily intended for power systems with a rated frequency of 50 Hz or 60 Hz and a rated voltage of 35 kV or lower. Its core function is to provide high‑accuracy current signals for energy metering, current measurement, and relay protection. This model features excellent dynamic and thermal stability, high accuracy, and a large capacity.
The LZZBJ9-10A current transformer is primarily designed for indoor power systems with a rated frequency of 50 Hz and a rated voltage of 10 kV or less (with a maximum operating voltage of 12 kV). Its core functions are to accurately measure current and electrical energy in the circuit and to provide reliable signals to relay protection devices. This model is widely used in indoor switchgear—such as center‑mounted switchgear and cubicle switchgear—as well as in complete high‑ and low‑voltage equipment sets.
The LZZB1-35W current transformer is an epoxy‑resin‑cast, fully enclosed device, primarily intended for power systems with a rated frequency of 50 Hz or 60 Hz and a rated voltage of 35 kV or lower. Its core function is to provide high‑accuracy current signals for energy metering, current measurement, and relay protection. This model is specifically designed to interface with equipment such as the ZW‑type 35 kV vacuum circuit breaker, offering superior dynamic and thermal stability, high accuracy, and large capacity.







