12kv Rn8II Sf6 Gas Insulated Ring Main Unit Medium Voltage Indoor Fuse Device Electrical Transformer Switchgear for Prefabricated Substation

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12kv Rn8II Sf6 Gas Insulated Ring Main Unit Medium Voltage Indoor Fuse Device Electrical Transformer Switchgear for Prefabricated Substation

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Product Description

Technical Specification

No.	Item	Unit	Load Switch	Combined Unit	Circuit Breaker
1	Rated Voltage	kV	12
2	Rated Frequency	Hz	50
3	Rated Main Bus Current	A	630
4	Rated Current	A	630	125*	200/630
5	Rated Short-circuit Breaking Current	kA	-	31.5*	20/25
6	Rated Transfer Current	A	-	1750	-
7	Rated Duration Of Short-Circuits	s	4	-	4
8	Rated Short-time Withstand Current (r.m.s.)	kA	20/25	-	20/25
9	Rated Peak Withstand Current	kA	50/63	-	50/63
10	Rated Short-circuit Making Current (peak)	kA	50/63	80	50/63
11	1min Power-frequency Withstand Voltage	kV	42 (Earth) / 48 (Isolating)
12	Lightning Impulse Withstand Voltage	kV	75 (Earth) / 85 (Isolating)
13	Power-frequency Withstand (Auxiliary)	kV	2
14	Rated Active Load Breaking Current	A	630
18	Mechanical Endurance	Times	5000/10000	5000	10000
20	Annual SF6 Gas Leakage Rate	%	≤0.05

Notes:
* The rated current and rated short-circuit breaking current of the combined unit shall be determined according to the equipped fuse.

About Our Manufacturing

The company operates world-leading digital intelligent manufacturing production lines and comprehensive production/testing equipment. Key R&D and production lines include: 3-35kV high-voltage switchgear series, 3-35kV high/low-voltage pre-assembled substation series, 3-35kV gas-insulated switchgear series, and 0.66kV and below low-voltage switchgear series. Component series include sulfur hexafluoride circuit breakers, indoor vacuum circuit breakers, and smart terminal products.

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Frequently Asked Questions

What main electrical products do you supply?

We mainly supply LV/MV (0.4kV-40.5kV) distribution cabinets, circuit breakers, box substations, pole mounted switches and related electrical supporting parts.

Do you accept OEM/ODM?

Yes, we do. Our professional engineering team can customize products according to your drawings or specific requirements.

What's your MOQ?

Our MOQ is one set. We welcome small trial orders for your initial cooperation.

What's the delivery time?

It depends on your order quantity and specifications, and it normally takes about 15-20 working days.

How do you ensure product quality?

We have a strict QC team and complete testing process. Every product will be fully tested before shipment, and we can provide test photos/videos if you need.

What after-sales service do you offer?

We provide online technical support at any time. If you have product use problems, we will reply and solve them for you in a timely manner.