Outdoor stand-alone packaged switching units – YAKNO-6, YAKNO-10

Outdoor stand-alone packaged switching units - YAKNO-6 and YAKNO-10 - are used for power transmission for electrical equipment of bucket-wheel open-pit excavators; they can be installed in tap-off and trunk lines at open-pits as well as at connection points between in-pit lies and power lines with 6 and 10 kV voltage, 50 Hz frequency. They can be used as section units in rural grids.  

Outdoor stand-alone packaged switching units - YAKNO - with outdoor installation on skid, equipped with vacuum circuit-breakers - type ВВ/ТЕL - 10 -12.5-20/1000U2, VVTE - 10 -20/630U2, VBP - 10-20/630UHL2, VBEM - 10 - 12.5/800UHL2; with oil circuit-breaker, type VPM-10-20/630U2, with spring drive - type PP-67 or manual drive - type PRBA-114, PRBA-224 - are used for connection of electric shovels, high-voltage motors, power transformers, drilling rigs, high-voltage motors of drilling rigs, dredges, compressor and condensing units, and other consumers.

Outdoor stand-alone packaged switching units - YAKNO-6 and YAKNO-10 have certificate of conformity No. ROSS RU.AI50.V01522

• YAKNO-6; YAKNO-10switching unit (Air/Cable, Cable/Cable)
• YAKNO-6; YAKNO-10 switching unit and lighting
• YAKNO-6; YAKNO-10 sectioning unit
• YAKNO-6; YAKNO-10 lighting unit

Physical design and dimensions for YAKNO-6 and YAKNO-10:

1.  high-voltage-type housing;

2.  air input cross-arm;

3.  lead-in insulators for the input;

4.  disconnecting switch compartment;

5.  compartment for LV devices and for HV switch controls;

6.  compartment for voltage transformer and fuses;

7.  HV switch compartment;

8.  skid;

9.  arresters or surge protection devices.

Outdoor stand-alone packaged switching units - YAKNO - have nine configurations for principal connections and can be used for open-pit lines of different configuration.

Depending on the type of input and output, YAKNO-6 and YAKNO-9 units can be offered in the following options:
а) air / cable;
b)air / air;
c)cable / cable.

Structure of the symbol legend for YAKNO-6 and YAKNO-10 U1:

YA -unit
K - packaged
N - outdoor
O - stand-alone
6 (10) - voltage rating up to 10 kV
U - climatic configuration in compliance with GOST 15150-69, GOST 15543-70
1 - placement category in compliance with GOST 15150-69, GOST 15543-70

Operating requirements for YAKNO-6 and YAKNO-10:

1.  Ambient temperature: from - 45 to + 50° С as per GOST 13543-70;

2.  Altitude: max 1000 m;

3.  Mechanical impact as per GOST 17516-72.

YAKNO-6 and YAKNO-10 units are used in temperate climates (U1) and have placement category 1 in compliance with GOST 15150-69.

Interlocks used in open-pit YAKNO-6 and YAKNO-10 units

There are following configurations of interlocking:
1. Mechanical interlocking of the oil circuit-breaker (type VPM) or vacuum circuit-breakers (type VVTE and VBP) with main switch blades;
2. Mechanical interlocking of main switch blades with grounding blades and with grounding blades installed after the circuit-breaker;
3. Mechanical interlocking of disconnect switch grounding blades with the HV switch compartment door;
4. Logical blocking of the drive of main switch blades with the drive of the ground blades.
5. Mechanical and electrical interlocking of a special vacuum circuit-breaker that is manually operated by the switch and the ВВ/ТЕL circuit-breaker with main switch blades.
6. Mechanical and electrical interlocking of common automatic circuit-breaker (magnetic starter) in the low-voltage circuit of the power transformer with main switch blades (for the principal connection diagram).

Protection used in YAKNO-6 and YAKNO-10 units

1. Current cutoff on the relay - type RT 40 - for options with vacuum circuit-breakers - type ВВ/ТЕL, VVTE, and VV;
2. Over-current protection on the relay - type RT 40 - for options with vacuum circuit-breakers - type ВВ/ТЕL, VVTE, and VV (if required in the DATA SHEET);
3. Current cutoff on the direct-action relay - type RTM - for options with vacuum circuit-breaker - type VBP - with spring-magnetic drive; for option with oil circuit-breaker - type VPM - with spring drive - type PP 67 - and manual drive - type PRBA;
4. Over-current protection on the direct-action relay - type RTV - for options with oil circuit-breaker - type VPM - with spring drive - type PP 67 - and manual drive - type PRBA (if required in the DATA SHEET);
5. Ground fault single-phase protection on relay - type RTZ 51 and RN 53/60D, ZERO(ZZM-U2);
6. Under-voltage protection on two relays - type RN 54/160 - for options described in par. 4 or at additional request in the DATA SHEET for options described in par. 1-7;
7. Ground cable breakdown protection;
8. Ground fault protection in the low-voltage circuit of the outdoor lighting for principal connection diagram No. 4;
9. Leakage current protection in the low-voltage external circuits of the power transformer on relays - type RUP, ARGUS, RY, and AZUR for principal connection diagram No. 8 (if required in the DATA SHEET);

10. Disconnection of the vacuum circuit-breaker at absence of operating voltage.

To make an order, please, fill in the DATA SHEET for YAKNO units

Russian version of YAKNO-6, YAKNO-10

• Outdoor stand-alone packaged switching units -YAKNO 6; 10 V / K , K / K
• Outdoor stand-alone packaged switching units – YAKNO and lighting stations
• Outdoor stand-alone packaged switching units – YAKNO – sectioning stations
• Outdoor stand-alone packaged switching units – YAKNO – Lighting stations