Mid-mounted Solid-sealed Vacuum Load Switch-Fuse Combination Unit

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Attributi chiave

Marca	ROCKWILL
Numero modello	Mid-mounted Solid-sealed Vacuum Load Switch-Fuse Combination Unit
tensione nominale	12kV
corrente nominale	630A
Serie	RMR

Descrizioni prodotto fornitore

Descrizione

Product Introduction

RMR‑12 Series Center‑mounted Sealed Pole Vacuum Load Break Switch‑Fuse Combination Apparatus is a new‑generation vacuum switching device developed based on unique design concepts and market demands.It is widely used in indoor armored air‑insulated switchgears.It complies with the standards including GB 3804‑2004 and GB 16926‑1997.Under normal conditions and within its technical parameters,it can operate safely and reliably in power systems of the corresponding voltage level.

Operating Environment

Ambient Temperature: Maximum +40°C, minimum -25°C.
Ambient Humidity: Daily average relative humidity ≤ 95%; monthly average relative humidity ≤ 90%.
Saturated Vapor Pressure: Daily average saturated vapor pressure ≤ 2.2×10⁻³ MPa; monthly average saturated vapor pressure ≤ 1.8×10⁻³ MPa.
Altitude: Not exceeding 1500 m.
Seismic Intensity: Not exceeding 8 degrees.
Application Site: No dripping water, no flammable or explosive hazards, no chemically corrosive gases, and no severe dust.
Special Note: If the product's operating environment exceeds the above specifications, users may negotiate with our company for confirmation.

Main Technical Parameters

No.	Item	Unit	Parameter
1	Contact Opening Distance	mm	8–10
2	Contact Pressure Spring Stroke	mm	3–5
3	Phase-to-Phase Center Distance	mm	150 / 210 / 275
4	Opening/Closing Asynchronism	ms	≤ 2
5	Contact Bounce Time (Closing)	ms	≤ 3
6	Average Closing Speed	m/s	0.4–0.8
7	Average Opening Speed	m/s	1.0–1.4
8	Closing Time (at Rated Operating Voltage)	ms	≤ 60
9	Opening Time (at Rated Operating Voltage)	ms	≤ 30
10	Main Circuit Resistance	μΩ	≤ 250
11	Allowable Wear Thickness of Moving and Stationary Contacts	mm	3

Technical Parameters

No.	Item	Unit	RMR-12/T630-20 Vacuum Circuit Breaker	RMR-12/T630-20 Vacuum Circuit Breaker – Fuse Combination Equipment
1	Rated Voltage	kV	12	12
2	Power Frequency Withstand Voltage (Phase-to-Phase, Phase-to-Ground)	kV	42	42
3	Lightning Impulse Withstand Voltage (Phase-to-Phase, Phase-to-Ground)	kV	75	75
4	Rated Current	A	630	160 (Fuse)
5	Rated Short-Circuit Breaking Current	kA	-	50 (Fuse)
6	Rated Short-Time Withstand Current	kA	20	-
7	Rated Peak Withstand Current	kA	50	-
8	Rated Closing Switching Current	kA	50	-
9	Rated Cable Charging Breaking Current	A	16	-
10	Rated Making Current	A	-	3150
11	Breaking Capacity of Transformer	kVA	1600	-
12	Electrical Life	Cycles	10,000	-
13	Partial Discharge Quantity	pC	≤ 5	≤ 5

Technical Data of Spring-Operated Mechanism

Component Name & Code	Power Consumption (VA/W)	Remarks
Closing/Locking Electromagnet	Y1	See notes
First Opening Trip Unit	Y2	220
Closing Trip Unit	Y3	220
Overcurrent Trip Unit	Y7–Y9	/
Undervoltage Trip Unit	Y4	/
Trolley Locking Electromagnet	Y0	3

Technical Data of Spring-Operated Mechanism

Item	Unit	Data
Rated Voltage	V	AC 220, 110; DC 220, 110
Motor Power	W	90
Energy Storage Time	s	≤ 8

Outline and Mounting Dimensions

Mid-mounted Solid-sealed Vacuum Load Switch-Fuse Combination Unit

Negotiable

Calcolatore di prezzi

Modello

RMR-12

Garanzia da

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