The ACCL is an automatic source changeover unit with current limiting capabilities. It monitors the mains and generator power sources for a building and automatically switches between them, limiting generator current to prevent overloads. When the generator load exceeds the preset limit, power is cut off for 9 seconds before attempting to reset. It features microprocessor control for precision, LED status indicators, and capacities ranging from 300-3000 watts for single and 3-phase models.

1. Automatic source change over with current limiter- ACCL
Prok devices an ISO 9001-2000 Company introduces most reliable dedicated
Microcontroller based Automatic source change over with current limiter (ACCL)
ACCL is fully automatic high accurate electronic unit to efficiently monitor the
individually rationed power from generator in an electrical system , specifically,
high rise building(apartments),multistoried complex, town ship and commercial
establishments etc.
Features:
• While monitoring the Mains supply, which is sensed through opto coupler
for reliable and guaranteed performance, It allows full load current while
main supply is ON
• While monitoring the Generator supply, current is sensed through
interposing CT, allows only essential load and functions as load limiter as
per desired wattage and current.
• Current sealing, while monitoring the Generator, will be preset at factory.
• Whenever the load current exceeds the preset limit ,power is
automatically switched off instantaneously and reset automatically after
9 seconds and trip again if the over load still exists, this cycle is repeated
every 9 seconds ( 9,18,27 ,36 and 45 seconds) it will go into sleep mode if
the over load still exists. The unit can be reset by switching off the DG –
supply to the unit. However tailor made units can be made as per
customer requirements as this is a micro controller based unit.
• On resumption of the mains supply it automatically changes over, and full
load can be drawn.
Benefits:
• Microprocessor based, hence precise unit.
• It calculates the power at which cut off should take place by computing
voltage and current.
• On resumption of supply mains, the ACCL will normally change over
automatically back to the main source, immediately (3cycles or provide
delay to care of initial spikes and switching surges).
• LED indication of all operational status
• Simplifies electrical complexity
• Significant saving on wall space & wiring.
• Product guaranteed for 24months
• In the event of change over from EB to DG the neutral is first
Isolated, then phase is disconnected.
• Tropicalized and rugged design.
Specifications:
EB input: 220V AC 50Hz
DG input: 220V AC 50Hz
Red LED: Indicates load on EB
Green LED: Indicates load on DG.

2. When Green LED blinks: it indicates DG still available when load is
transferred to EB.
Dimensions: LX W X H: 105 X 70X60 mm. (for single phase)
Three phase units will be housed in powder coated
metal enclosures.
Contacts: 30 A breaking capacity.
Power consumption :< 1Watt.
Models:
Model EB_ supply DG_ supply
ACCL 30_1Phase / μP 30A 300-3000Watts
ACCL 10_3Phase/ μP 10A 300-3000Watts
ACCL30 _ 3Phase /μP 30A 300-3000Watts
ACCL40 _ 3Phase /μP 40A 300-3000Watts
LED Status: EB_ Red LED, DG- Green LED / Red LED.
1. If Red LED is ON_ it indicates presence of EB
2. If Green LED is ON_ it indicates presence of DG
3. If Red LED is ON & Green blinks it indicates both EB & DG presence (Unit
will be automatically switched to EB Mode.)
4. If Red LED is ON & Green LED Turns to RED and blinks it indicates that
ACCL- is in Lock Out mode; To RESET the ACCL -switch OFF & Switch ON
the incoming Supply Once.
Note: ON delay 3.0sec, for change over from EB to DG.
PROK DEVICES PVT LTD
NO.2930, SIMHADRI
BSK 2ND STAGE, 14TH CROSS
BANGALORE-560 070 INDIA
Tel: 080-26760718, 26761719
Fax: 080-26761720
Email:prokdvs@blr.vsnl.net.in
Website: www.prokdvs.com