Cabinets of KRURN-6 NF5 series switchgears and controlgears
The cabinets of KRURN-6 NF5 series switchgears and controlgears are intended to distribute electric power with 6 kV voltage of general power-line frequency, protect electric equipment with the insulated neutral, and control underground current collectors of iron-ore, shale, and coal mines that are not gas and dust-dangerous.
KRURN-6 NF5 series switchgears and controlgears are designed for the operation under the following conditions:
- altitude above sea level: no more than 1000 m;
- ambient temperature: from -10º C to +35º C;
- environment: atmosphere of iron-ore, coal, and shale mines with dust content of no more than 8 mg/m3; dust is non-explosive, current-conducting;
- operating position in space: vertical;
- departure from the operating position is permissible to any direction for up to 0.17 radian (10º).
KRURN-6 NF5 series switchgears and controlgears are characterized by compact size, high level of design solutions, reliability, and ease of maintenance.
KRURN-6 NF5 series switchgear and controlgear cabinet is furnished with a protection-and-control unit BZU-2-11 (outgoing line unit, incoming line cabinet unit, sectionalizing cabinet unit) and vacuum circuit breaker VVU-SESsch-P9-6.
KRURN-6-UKhL5 series switchgears and controlgears meet the requirements of GOST 24754.
Technical specifications:
|
Parameter name
|
Value
|
|---|---|
|
Rated voltage, kV
|
6
|
|
Maximum operating voltage, kV
|
7.2
|
|
Rated current of the main circuits of the cabinet, A:
· entrance and sectionalizing cabinets
· cabinet of outgoing connections
|
315; 400; 630
50; 100; 160; 200; 315;400
|
|
Rated frequency, Hz
|
50
|
|
Rated breaking current of the embedded circuit breaker, kA
|
20
|
|
Rated short-time electrodynamic current, kA
|
50
|
|
Short-time thermal current, kA
|
20
|
|
Short-time electrodynamic current lead time, sec
|
3
|
|
Marking of mining version according to GOST 24754
|
RN1 (in Russian: РН1)
|
|
Ingress protection rating according to GOST14254
|
IP54
|
|
Version of outgoing line leads
|
Cable-type
|
|
Overall dimensions (width x depth x height), mm
|
800 х 1770 х 1385
|
|
Weight, no more than, kg
|
850
|
Made in accordance with the Corporate Standard Ts 00212883-026:2014.