Servo Stabilisers

Standard Specification: 3 PHASE AIR COOLED (Optional – Oil Cooled)

Phase to Phase

Input Range : 245V – 460V AC3Ph
300V -470VAC
340V – 480V AC3Ph
360V – 480V AC3Ph

Output Voltage :400V/415V AC50Hz
Unbalanced
4 wire : RYB N
Connections : Star

Operating Frequency : 47 to 53 Hz

Output Voltage Adjustable: 380V to 415V AC 3Ph
: 220V to 240V Ac 1Ph

Output Voltage Regulation : + 1 %
(No load to Full Load)

Out Voltage Regulation : + 1 %
(Full Load)S

Correction Rate : 15V / 20V / 35V / Sec – 1Ph
: 25V / 35V / 60V / Sec – 3Ph

Waveform Distortion: Nil
Output Waveform : True Reproduction of Input

Insulation : Class ‘B’

Short CKT Period & Percentage : 300 % for 250 m.sec.

Normal Operating Temperature : 0oC to 45oC

Climatic Conditions : 90 % RHMax. Non-Condensing at 35oC

Type of Cooling : Natural Air Cooled

Capacities : 1) From 0.5 KVA up to 50 KV A 1Phase
: 2) From 1.5 KVA up to 200 KVA 3phase

Mode of system : Fully Automatic / Manual

System construction : AS PER IS: 9815 OF 199

Protection:

Over voltage CUT-OFF (above 245 VAC output)
Low voltage cut-off (below 200 VAC output)
Control CKT protected with fuses spike / lightening arresters (optional)
Overload protected with mcb / mccb
Short CKT protected with HRC fuses
Single phasing preventer: dimmer protection arrangement
Automatic by-pass (optional)