ABB 电流互感器 2
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ABB 电流互感器 2
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CURRENT TRANSFORMER IHDA_
Instalation, Operating and maintence instructions 34 IHDA_2 ABBABB 34 ABBABB 56 ABBABB Sp. z o.o.
PowerTechnologyProductsDivision
ul.Leszno59
06-300Przasnysz,Poland
Phone: Exchange: +48 29 75 33 200
Sales Office: (+48 29) 75 33 223, 75 33 227, 75 33 222
Telefax: (+48 29) 75 33 329, 75 33 327, 75 33 328
www.abb.comCABLE CURRENT TRANSFORMERS
types: KOLMA, KOLA, KOKM, KORI, KOKU, KODI, KOLT
CatalogueCONTENT page
1. KOLMA, KOLA ........................................................................ 3
Description ...............................................................................................3
How to select the correct residual current transformers .........................3
Technical data ..........................................................................................4
Installation ................................................................................................4
Ordering data ...........................................................................................6
Overall dimensions ..................................................................................7
2. KOKM ...................................................................................... 8
Technical data ..........................................................................................8
Ordering data ..........................................................................................10
Installation ...............................................................................................10
Overall dimensions .................................................................................12
3. KOKM (for ZX panels) ...........................................................17
Technical data ........................................................................................17
Overall dimensions .................................................................................19
4. KOKM (for RMU) ................................................................... 28
Electrical parameters, dimensions, connection diagrams ....................28
Terminal marking ....................................................................................29
Outside dimension of CT's ....................................................................31
Connection diagram ..............................................................................31
5. KORI ...................................................................................... 33
Technical parameters ............................................................................33
6. KOKU ..................................................................................... 35
Technical data .......................................................................................36
Ordering data ........................................................................................36
Overall dimensions ................................................................................38
7. KODI ...................................................................................... 40
Overall dimensions ...............................................................................40
Measurment diagram ............................................................................41
8. KOLT ...................................................................................... 42
Technical data ........................................................................................42
Overall dimensions ................................................................................44
ABBCable Current Transformers, indoor
types: KOLMA, KOLA
Description
Transformers, KOLMA_ and KOLA_ are suitable for the measurement of the sum of three-
phase currents in a 3-phase cable. Under normal operating conditions this sum is zero.
In the event of an earth-fault the sum of the currents is equal to the earth-faul current and
a corresponding current flows in the secondary.
These transformers are used together with static earth-fault relays. The cable current
transformers can generally be used when measuring the residual current e.g. to prewarn
of, or locate an earth-fault. An busbar or cable serves as the primary conductor.
How to select the correct residual current transformers
The transformer for an earth-fault relay is selected according to dimension of the window,
and construction of the transformer.
For types KOLMA 06 A1, and KOLMA 06 D1, the number of turns used in the secondary
winding is selected according to the relay setting value, and the earth-fault current or the
required current ratio.
In addition correct functioning of the earthfault protection relays for KOLMA 06 A1 and
KOLMA 06 D1 is easy to test by means of the test winding (terminals P1x - P2x) of the
transformer. The test winding is rated for 6 A max. continuous current.
ABB Table 1. Selection of residual current transformers
Window diam. Weight
Type Construction
mm kg
KOLMA 06 A1 90 Ring core, multi-tap secondary 7.0
KOLMA 06 A2 58 Ring core 2.9
KOLMA 06 B2 100 Ring core 5.4
KOLMA 06 D1 180 Ring core, multi-tap secondary 11.5
KOLMA 06 D2 180 Ring core 11.4
KOLA 06 B2 100 Split ring core 6.0
Cable current transformers, types KOLMA KOLA 06 D2 180 Split ring core 11.0
Technical data
The primary winding of indoor type cable current transformers is either a cable or a busbar,
which is insulated for the application voltage.
The secondary winding and ring shaped iron core is cast in resin which has good electrical
and mechanical properties.
Rated voltage 0.72 kV (1)
Insulation test voltage 50 Hz 1 min 3 kV (IEC 60044-1)
Frequency 50 Hz (60 Hz)
Rated thermal current 1.2 x I
pn
Short-time withstand current I 1 s 60 x I (2)
th pn
Peak withstnad current I 2.5 x I
dyn th
Secondary terminals For 6 mm2 conductor
Operating temperature range –5...+40 °C
(1) The insulation level of the primary conductor determines the maximum operating voltage.
(2) KOLA 06 B2 is type tested for 10 kA 3 s.
Installation
The KOLMA-types must be installed before the cables and cable terminations are
connected.
With the KOLA 06 B2 and KOLA 06 D2 -types, the ring core can be opened and thus the
transformer can be installed eventhough the cable is already connected. The two halves
of the ring core are tightened together with four screws which also guide the halves to the
correct position. The secondary winding is distributed over both halves of the core. The
two sections of the winding are connected together with two connecting pieces.
Cable current transformers are fastened either by means of the fixing base or by the nuts
Instalation, Operating and maintence instructions 34 IHDA_2 ABBABB 34 ABBABB 56 ABBABB Sp. z o.o.
PowerTechnologyProductsDivision
ul.Leszno59
06-300Przasnysz,Poland
Phone: Exchange: +48 29 75 33 200
Sales Office: (+48 29) 75 33 223, 75 33 227, 75 33 222
Telefax: (+48 29) 75 33 329, 75 33 327, 75 33 328
www.abb.comCABLE CURRENT TRANSFORMERS
types: KOLMA, KOLA, KOKM, KORI, KOKU, KODI, KOLT
CatalogueCONTENT page
1. KOLMA, KOLA ........................................................................ 3
Description ...............................................................................................3
How to select the correct residual current transformers .........................3
Technical data ..........................................................................................4
Installation ................................................................................................4
Ordering data ...........................................................................................6
Overall dimensions ..................................................................................7
2. KOKM ...................................................................................... 8
Technical data ..........................................................................................8
Ordering data ..........................................................................................10
Installation ...............................................................................................10
Overall dimensions .................................................................................12
3. KOKM (for ZX panels) ...........................................................17
Technical data ........................................................................................17
Overall dimensions .................................................................................19
4. KOKM (for RMU) ................................................................... 28
Electrical parameters, dimensions, connection diagrams ....................28
Terminal marking ....................................................................................29
Outside dimension of CT's ....................................................................31
Connection diagram ..............................................................................31
5. KORI ...................................................................................... 33
Technical parameters ............................................................................33
6. KOKU ..................................................................................... 35
Technical data .......................................................................................36
Ordering data ........................................................................................36
Overall dimensions ................................................................................38
7. KODI ...................................................................................... 40
Overall dimensions ...............................................................................40
Measurment diagram ............................................................................41
8. KOLT ...................................................................................... 42
Technical data ........................................................................................42
Overall dimensions ................................................................................44
ABBCable Current Transformers, indoor
types: KOLMA, KOLA
Description
Transformers, KOLMA_ and KOLA_ are suitable for the measurement of the sum of three-
phase currents in a 3-phase cable. Under normal operating conditions this sum is zero.
In the event of an earth-fault the sum of the currents is equal to the earth-faul current and
a corresponding current flows in the secondary.
These transformers are used together with static earth-fault relays. The cable current
transformers can generally be used when measuring the residual current e.g. to prewarn
of, or locate an earth-fault. An busbar or cable serves as the primary conductor.
How to select the correct residual current transformers
The transformer for an earth-fault relay is selected according to dimension of the window,
and construction of the transformer.
For types KOLMA 06 A1, and KOLMA 06 D1, the number of turns used in the secondary
winding is selected according to the relay setting value, and the earth-fault current or the
required current ratio.
In addition correct functioning of the earthfault protection relays for KOLMA 06 A1 and
KOLMA 06 D1 is easy to test by means of the test winding (terminals P1x - P2x) of the
transformer. The test winding is rated for 6 A max. continuous current.
ABB Table 1. Selection of residual current transformers
Window diam. Weight
Type Construction
mm kg
KOLMA 06 A1 90 Ring core, multi-tap secondary 7.0
KOLMA 06 A2 58 Ring core 2.9
KOLMA 06 B2 100 Ring core 5.4
KOLMA 06 D1 180 Ring core, multi-tap secondary 11.5
KOLMA 06 D2 180 Ring core 11.4
KOLA 06 B2 100 Split ring core 6.0
Cable current transformers, types KOLMA KOLA 06 D2 180 Split ring core 11.0
Technical data
The primary winding of indoor type cable current transformers is either a cable or a busbar,
which is insulated for the application voltage.
The secondary winding and ring shaped iron core is cast in resin which has good electrical
and mechanical properties.
Rated voltage 0.72 kV (1)
Insulation test voltage 50 Hz 1 min 3 kV (IEC 60044-1)
Frequency 50 Hz (60 Hz)
Rated thermal current 1.2 x I
pn
Short-time withstand current I 1 s 60 x I (2)
th pn
Peak withstnad current I 2.5 x I
dyn th
Secondary terminals For 6 mm2 conductor
Operating temperature range –5...+40 °C
(1) The insulation level of the primary conductor determines the maximum operating voltage.
(2) KOLA 06 B2 is type tested for 10 kA 3 s.
Installation
The KOLMA-types must be installed before the cables and cable terminations are
connected.
With the KOLA 06 B2 and KOLA 06 D2 -types, the ring core can be opened and thus the
transformer can be installed eventhough the cable is already connected. The two halves
of the ring core are tightened together with four screws which also guide the halves to the
correct position. The secondary winding is distributed over both halves of the core. The
two sections of the winding are connected together with two connecting pieces.
Cable current transformers are fastened either by means of the fixing base or by the nuts
AIGC您好！ABB是一家全球领先的电力和自动化技术公司，他们的电流互感器（2可能是指型号或者系列中的第二代产品）是一种关键的电气设备。电流互感器的主要作用是将高压电路中的大电流安全地转换为低电压的电流，以便于测量、保护和控制。这种设备通常用于电力系统、变电站、工业控制和楼宇自动化中，确保了用电安全和数据准确性。如果您有关于ABB电流互感器的技术参数、选型、安装或维护的问题，请随时告诉我，我会尽力提供帮助。
