Relay protection and automation cabinets for stations and substations
RZA series relay protection and automation devices used for 0.4-220 kV electric grids.
The hardware part of the RZA series relay protection and automation devices for 110-220 kV electric grids represents chiefly an aggregate of cabinets, protection terminals (terminals BMRZ, Temp, Sirius, etc.), connections, and circuits. The number of the options of cabinet designs for different types of substations’ primary circuits of taking into account the variance of the equipment used when designing is large enough.
At the present time, basic structural and functional designs of RZA cabinets for 35 kV, 110-220 kV substations have been developed using the following key equipment and are offered:
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Designation
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Name
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|---|---|
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ShZL-DFZ-…NF4
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Line phase-comparison (differential phase) protection cabinet
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ShZL-DZ-…NF4
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Line differential protection cabinet
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ShZL-NVCh-…NF4
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Line directional comparison carrier relaying cabinet
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ShZL-KSZ-…NF4
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Stepped-protection package cabinet
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ShZAL-…NF4
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Line protection and automatic control cabinet
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ShZT-…NF4
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Transformer protection cabinet
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ShZAT…NF4
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Autotransformer protection cabinet
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ShZTB…NF4
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Generator-transformer unit protection cabinet
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ShZG…NF4
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Generator protection cabinet
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ShZR…NF4
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Reactor protection cabinet
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ShZD…NF4
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Motor protection cabinet
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ShZSh…NF4
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Busbar protection cabinet
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ShZO…NF4
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Lead protection cabinet
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ShZSV…NF4
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Sectionalizing circuit-breaker protection cabinet
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ShBSK…NF4
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Static capacitor bank protection cabinet
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ShPAA…NF4
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Emergency control automatics protection cabinet
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ShU…NF4
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Control cabinet
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ShAChR…NF4
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Underfrequency load shedding cabinet
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ShARNT…NF4
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Automatic transformer voltage control cabinet
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ShAUV…NF4
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Circuit breaker automatic control cabinet
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ShTsS…NF4
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Central signalcabinet
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ShEMB…NF4
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Electromagnetic locking cabinet
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ShOBR…NF4
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Disconnector on-line interlocking cabinet
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ShTN…NF4
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Voltage transformer cabinet
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ShATN…NF4
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Voltage transformer automatic control cabinet
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ShKN…NF4
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Voltage control cabinet
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ShSOPT…NF4
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Operating DC voltage system cabinet
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ShOMP…NF4
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Line fault location cabinet
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ShAOSN…NF4
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Automatic undervoltage protection cabinet
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ShA…NF4
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Automatic control cabinet
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ShKU…NF4
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Line metering terminal-block cabinet
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ShKZ…NF4
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Terminal-block cabinet
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ShSN (1;2)…NF4
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Auxiliary power distribution cabinet (1; 2)
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ShZAU-STS…NF4
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Thyristor self-excitation system cabinet
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ShA-STK…NF4
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Hydraulic unit thermal control system cabinet
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ShRPR…NF4
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Disconnector’s slave relay cabinet
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ShTSN…NF4
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Auxiliary transformer bushing cabinet
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ShZVV…NF4
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Bushing circuit-breaker protection cabinet
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Relay protection and automation cabinets for substations and electric grids with a voltage of 0.4-220 kV are made by using microprocessor-based protection relays “BMRZ” made by the “Mekhanotronika” Scientific and Technical Center (Russia) and other manufacturers (on customer’s request).
Overall dimensions:
- width: 600, 800, 1000, 1200, 1600 mm;
- height: 2200 mm;
- depth: 600, 800, 1000 mm.
Single and double-door floor-standing cabinets with glassed inspection openings, of unilateral and bilateral maintenance, having a number of technical advantages as follows:
- temperature operating range with conserved all reported parameters: from - 40° С to + 55° С;
- relative basic error of current measurement: ±2.5 % throughout the dynamic range;
- permissible pulsations of the operating current: from +80 to - 100%;
- permissible interruption of operating current: no longer than 0.5 sec;
- climatic category: UKhL (temperate and cold weather) according to GOST 15150 (NF according to IEC). Placement category: 4 according to GOST 15150.
- altitude above sea level: up to 2000 m.
- humidity: no more than 80% at t = 20° С.