Product description

Destination:

TDRi is used in Network Substations: 160÷630 kVA, voltages 20; 10; 6 / 0.4 kV, for supplying electricity to building consumers, commercial agents and public street lighting.

Symbology:

TDRi(m) [x],[y],[z]   – where:
• T      panel
• D      distribution
• R,A      network, subscriber
• I circuit breaker
• S     separator
• m energy measure for power and/or lighting
• x number of main circuits with SIST 201/SIST 401 sockets for MPR
• y number of lighting circuits with SIST 101 sockets for MPR
• z nominal current in amperes (A)

Features::

It ensures the interruption of the general electric circuit, the protection of the transformer in case of defects or overloads that may appear in the low voltage or public lighting network
Ensures the measurement of active and reactive electrical energy for the Substation.
It allows the power supply of public lighting at night.

Constructive characteristics:

• metal cabinet (for the closed version)
• metal frame (frame) protected with wire mesh (for the open version)
• automatic switch
• three-pole separator on the general circuit
• three-phase energy measuring block on the input
• consumer supply columns, formed by MPR type fuses or vertical three-pole separators
• public lighting power block
• block for three-phase measurement of electricity consumed in public lighting
• it is mounted inside, on concrete foundations, the connection of the outgoing cables is made through bars on top, with cable lugs or through "V" clamps with IMBUS-type screws, and the outputs through the lower part
• both constructive versions, the closed or open version, are composed
• in the standard version of three functional modules:
• transformer input mode
• way output columns feeding consumers
• public lighting mode

Technical characteristics:

PT transformer power 160...630 kVA
Rated current 250...1000 A
Insulation voltage 660 V a.c.
Nominal frequency 50 Hz
Degree of protection
• IP 00 for rack
• IP 43 for metal cabinet
Power bars             made of Cu or Al
Nominal usage voltages 400 / 230 V a.c.

Usage conditions:

Placement / assembly indoor with access only for authorized and qualified personnel
Maximum altitude 2000 m
Air humidity 85% at 30 °C
Climate protection N3
Lifetime            20 ani
Ambient temperature - 25...+40 °C

Basic electrical diagram:

Fixed / removable switches, separators
Departures in MPR fuses or vertical separators with MPR
With / or without place for active, reactive energy meters on power circuits / public lighting