Specializing in the production of insulation products

RZP5.111a 12kV Embedded Pole Unit 1250A – 31.5kA Breaking Current Gas Insulated Switchgear

Description:

Bepto RZP5.111a 12kV Embedded Pole Unit 1250A with 31.5kA breaking capacity. 30,000 operations mechanical life, 80kA peak withstand, ≤1pC discharge.

Applications:

  • 12kV substations requiring 31.5kA breaking capacity
  • Industrial power distribution with high fault current levels
  • Heavy industry, mining, and petrochemical facilities
  • Critical infrastructure and utility applications

Specifications

RZP5.111 12 kV Embedded Pole, 1250A

Drawing No. Specification Match The Insulated Pull Rod Match The Flexible Connection Match The Contact Arm Sleeve
RZP5.111a EP12/1250-31. 5 RAP4.039b. 05 RAP4.039b. 01 RAP4.039b. 11

Features

Main Technical Data
Data Value Unit
Rated voltage 12 kV
Rated current 1250 A
Rated frequency 50 Hz
Rated short-circuit breaking current 31.5 kA
Operations of short-circuit breaking current interruption 30 time
Rated short-circuit making current 80 kA
Rated peak withstand current 80 kA
Rated short-time withstand current(4s) 31.5 kA
Rated single capacitor bank breaking current 630 ※ A
Rated back-to-back capacitor breaking current 400 ※ A
Short-time(1min) power-frequency withstand voltage 48 kV
Lighting impulse withstand voltage(peak) 75 kV
Circuit resistance at rated contact force ≤25 μΩ
Mechanical life 30,000 time
Contact closing force due to bellows and atmosphere 120±50 N
Counterforve at rated contact stroke 210±50 N
Contact limit erosion 3 mm
Shelf life 20 year
partial discharge ≤1 pC
Rated operating sequence 0-0.3s-co-180s-co
Mechanical Data Of Circuit Equipped With Interrupters
Data Value Unit
Rated contact stroke 9±1 mm
Contact connection stroke 3±1 mm
Average opening speed 0.9~1.3 m/s
Average closing speed 0.4~0.8 m/s
Rated operation pressure of contact 3100±200 N
Bounce duration of contact closing ≤2 ms
Out of simultaneity of contact closing and opening ≤1 ms
Max. overtravel ≤2 mm

“※”Rated characteristics to be given on requeset

Manual

RZP5.111-12-kV-Embedded-Pole-1250A.pdf
PDF File 988.20 KB

Let The World Know About Bepto

Bepto is a leading Chinese company in electrical insulation, focused on developing advanced solutions for future power systems. We support transmission and distribution safety and growth, with long-term partners including State Grid, ABB, Schneider, Siemens, and GE. Our services reach clients in over 22 countries.

Application

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