Notes For Emax Ltt Low Temperature Accessories; Spare Parts And Retrofi Tting - ABB Emax E1 Installation And Service Instructions Manual

For the change over, the customer can use a suitable electronic relay, whose diagram is supplied by ABB SACE. The mechanical
interlocks between two or three circuit-breakers are made by means of cables that can be used for circuit-breakers installed,
either side-by-side or one over the other.
Table of feasible mechanical interlocks between two or three circuit-breakers
Number
Type of
of circuit-
interlock
breakers
A TWO
B THREE
C THREE
D THREE

10.3. Notes for Emax LTT Low Temperature accessories

The SACE Emax VF LTT, circuit breaker designed for low temperature environment, is accessoriable only with the standard opening,
closing and undervltage releases at 220V AC/DC.
The geared motor for the automatic charging of the spring is available with a special version for low temperature at 220V AC/DC.
Mechanical and electrical signalling for overcurrent releases accessories, auxiliary contacs, terminals and fi xed parts are in common
to the Emax VF product.
Transparent pushbuttons protection covers, IP54 door protection, interlocks, homoploar toroid, time delay device for undervoltage
release and external neutral current sensors are not available
(1) Consult ABB SACE
10.4. Spare parts and retrofi tting
Spare parts
The spare parts available are:
- Complete single pole (*) (Type "A")
- Arcing chamber
- Stored energy operating mechanism (*) (Type "A")
- Closing springs kit (*) (Type "A")
- Current sensors and release connecting cables
- Contact kits for clamp disconnection for a fi xed part of the removable circuit breaker
- Creeping earth contacts (for withdrawable version)
- Frontal shield kit complete with caps and side shields
- Safety shutters fi xed part shutters
- Transparent protection for PR121, PR122 and PR123 releases
- Opening solenoid for maximum current release PR121 / PR122 / PR123
- Testing front connecting cap for relay
- SACE PR030/B power supply unit
- Lubricating grease for stored energy operating mechanism
- Terminal board for fi xed
- Creeping contacts, fi xed part
- Creeping contacts, movable part
- Dust tab for door of cell
- Extraction crank
- Lifting plates pair
- Front escutcheon plate for Ronis-type key lock
For further details, ask for the ABB SACE spare parts catalogue.
(*) Subject to the customer's approval, ABB can replace "A" type parts.
Retrofi tting kits
The kits enable SACE Otomax and Novomax G30 circuit-breakers to be replaced, coupling the new circuit-breaker in the old
switchboard.
Model L6555
Type of circuit-breaker
A normal power supply unit and an
emergency unit.
Two normal power supply units and an
emergency unit.
A unit of 2 supplies and a bus-tie.
The two half-busbars can be supplied by
a single transformer (bus-tie closed) or
simultaneously by both (bus-tie open).
A unit of 3 supplies / a single closed cir-
cuit-breaker. Three supplies (generators
or transformers) on the same busbar for
which parallel operation is not allowed.
Possible interlocks
The fi rst circuit-breaker can be closed only if the second
(emergency) breaker is open.
The fi rst and third circuit-breakers can be closed only if
the second (emergency) breaker is open. The latter can
be closed only if the fi rst and third are open.
One or two circuit-breakers out of three can be closed
at the same time.
Only one of the three circuit-breakers can be closed.
( 1)
.
Apparatus
Doc. No
Emax
1SDH000460R0002
Scale
Page No
33/74