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Johns Electric Company Private Limited, leaders in Automation and Electrical, came into being with effect from 01.10.1992 as the successor to the erstwhile Johns Electric Company which was established in1978.



1  AMF Control Panel is for controlling two DG Sets, Master DG and slave DG. 
2 Auto mains failures (AMF) Panels is meant for controlling DG START / STOP sequence in accordance to the availability of utility power supply.
3  We design & manufacture the AMF panels for various capacity & different make of Diesel EA set.This is a Module with Generator monitoring, protection and start facilities. Operation of the module is via three pushbuttons mounted on the front panel with STOP, MANUAL and AUTO positions. Selection of the ‘Auto’ mode is confirmed by LED indicator, and monitors the incoming mains supply (3 Phase or Single phase). Should the incoming AC mains supply fall below a configurable pre-set limit, the generator will be started, and load transferred to the gen-set. When the AC mains supply returns to within limits, the module will transfer load back to the mains. The engine will be instructed to stop after a cool-down period. The module’s microprocessor provides a comprehensive functions.
  General Specifications
1 Fixed/ Modular design
2 Busbar rating upto -6300A
3 Busbar support SMC / DMC
4 Busbar Aluminium / Copper, Electrolytic grade
5 Panel confirm to IS Standards
6 The encloser is completely assembeled in CRCA SHEET 14 SWG (2MM) Panel Structure & 16 SWG (1.6 MM ) Doors/ Cover and 10 swg (3 mm) gland plate
7 cable room can be installed as many as a single core cables
8 Inner panel structure build from angle support
9 Base frame build from channel base of 100 mm only 
10 Entry Top or Bottom
  Unique Specification and Advantage
1 Automatic Changeover between Mains Electric Supply and DG
2 with PLC & DIEF along with REPUTED PARTS
3 Best suited for single and Double D. G handling 
4 with oil check alarm 
5 AMF control system provides
6 Consistant power supply to the load in absence of main supply.
7 DG set protections
8 Smooth Start / Stop Sequence.
9 Audio visual indications of various fault conditions.
10 Protects the load from voltage fluctuations.
11 Auto / Manual modes of operation.
12 Mains failure and voltage fluctuations detection.
13 User friendly.
14 GUI interface with TCP/ IP over GSM/GPRS (Optional)
                   AMF control System provides:
1 Consistent Power Supply to the load.
2 Smooth Start/Stop Sequence
3 Audio/Visual indication of various fault conditions.
4 Auto/Manual modes of operations
5 Mains failure and voltage fluctuation detection.
                   Main features for AMF Panels (Auto Mains Failure Panel)
1 Range from 250KVA to 3000KVA
2 Logic Panels with normal source or with standby DG source
3 Basic protection under /over voltage, under/Over frequency.
4 Provision with future synchronising.
5 Metering (Voltage, Ammeter, Frequency, KWH) & Battery charger unit
6 Modbus communication facility.
7 DG Breaker & mains Breaker (Optional)
  Techincal  Parameters and Data
1 Rated Voltage:  415 ± 5% volt, 3 phase (4 W + E)
2 Rated Current: 400A,2000A,3000A,6300A
3 Rated Insulated Voltage:  690V
4 Rated Frequency: 50 HZ AC supply
5 Rated Short-Time Withstand  Current : 80 Ka
6 Initial peak Rated Short-Time Withstand  Current :  220KA 
7 Duration of Short Circuit: 1 second
8 Protection grade of the encloser : IP54 standard and optional upto IP66
9 Forms used for internal sepration:  upto Form 4b
10 Standard colour for Panel: RAL 7032 Siemens Grey ( Please  contact us for any other colour)
11 Nine Tank and Oven & Spray based Paint process
12 Temprature rise tested encloser.
13  Ambient temperature of 50°C