Professional Provider of Power Testing Instrument
TP YCT
M type CT
PCT200 Series CT/PT Test System
PT
Bushing type CT
M type CT
Bushing Type CT
GIS CT
PT
PONOVO POWER CO., LTD.
2F,4Cell, Tower C, In.Do Mansion,
No.48A Zhichun Road, Haidian District
Beijing, PR China (100098)
Tel. +86 (10) 8275 5151(reception)
Tel. +86 (10) 8275 5151ext.8887
Fax. +86 (10) 8275 5151-8103
support@relaytest.com
info@relaytest.com
www.relaytest.com
PONOVO POWER CO., LTD
Principle
Excitation characteristics
test based on DC method
Ratio test based on voltage method
< Conventional method>
<Conventional method>
T2
A
TAx
v
Features :
A
Current source
T1
s
A
Current source is at primary side
and current measurement is at the secondary side
1 . Test CT according to IEC60044-1/6
and ANSI/IEEE C57.13
2. Can test all types of CT
3. One test can get all CT parameters
4. Fast test for excitation check
<New method >
<New method>
VariableFrequency
power
source
Ÿ
1kV knee point check time: 15s
TAx
V
Voltage source
A
Ÿ
10kV knee point check time: 50s
V
v
Voltage source is at secondary side and
Voltage measurement is at primary side
Features of new method:
Features of new method:
Ratio check up to 30000:1
q
Can check CT with high knee point value
q
Can check bushing CT
q
q
High efficiency, high accuracy, more safe
Can check GIS CT
q
Error check with
extrapolation method for M type CT
Test special CT
P1
S1
P2
S2
Load
Current
source
P1 CT under test P2
K2
S1
K1
A
S2
V
V
Load
Voltage source
L2 Standard CT L1
CT Tester
q
Bushing type CT requires large power output capacity
01
Get the ratio error and angle error based on
q
which conventional CT tester can not give. New test
method can solve this problem
extrapolation method, no need to use extra
standard CT nor standard load.
The primary side length is long for GIS type CT and this
q
requires large power output capacity which
conventional CT test can not supply. New test method
can solve this problem
02
www.relaytest.com
Test at field
Test Report
Simple wiring
PCT200i Report
PCT series report analyze software
P1
S1
Load
S2
P2
Standard Accessories
Soft bag
Test leads
Software Interface
Signal Cable(
Double wired)
2.5mm2 ×3m×2
PCT200i operation
Easy
ate
r
e
p
o
to
!
Transportation Case
(Anti Water & vibration)
Signal Cable（Double wired）
0.75mm2 ×15m×1
Earthing Lead with
Clap 4mm2 ×3m×1
q
Excel format test report
A4 size
q
q
Test result can be exported to key drive through USB port.
q
Can save 10.000 results in non-volatile memory
www.relaytest.com
03
Claps with Jaws open 30mm×4
Spike Test Pen×2
Cable Connector×2
Claps with Jaws open 10mm×4
04
www.relaytest.com
Comparison with traditional method
Shan Xi CT/PT Research Institute
Field Test Examples
Customer: Beijing High Transmission Company
Comparison of excitation tests between
conventional test method and PCT200i
Comparison with traditional test method
500kV TPY(transient) type CT
Test data Report
Test results
Chongqing Power Plant
Generator Output CT
C
omparison test with traditional CT test method was made in Shan Xi
CT & PT Research Institute. 0.2 class reference CT was used in the
test. The results show the maximum Ratio test difference is 0.08414% and
the maximum Phase deviation test difference is 0.34188’.
Generator output 6000:1 Test Result
www.relaytest.com
05
06
www.relaytest.com
Szechwan Substation (500kV)
Tianjing Huapanshan Power Plant
Shen yang CT/PT factory
Shan Xi 500kV Substation
500kV Tranformer Bushing CT
220kV Transmission Line CT
500kV Class CT TPY 4000:1 Test result
500kV Transformer
Casing CT TPY Class
TPY Class
1250:1test Datasheet
Shen yang CT/PT factory
220kV Transmission line GIS CT P
Class 1250:1 excitation characteristic curve
Generator Output TPY CT
200 kV transmission line
GIS CT Class P 1500:1 Test result
www.relaytest.com
07
08
www.relaytest.com
PCT200 Series CT/PT Test System
Specifications
Application
Specifications
Test M/P/TP type CT and PT
Test M/P/TP type CT and PT
0 ~ 120V
0 ~ 120V
Output current range
0~5Arms(15A peak)
0~5Arms(15A peak)
0.0001~500VArms(1500VA peak)
0.0001~500VArms(1500VA peak)
35000:1 ~ 45000:5
35000:1 ~ 45000:5
Ratio test range
Ratio test accuracy
Max. knee point voltage
Burden test range
Burden test accuracy
Winding resistance test rang
Winding resistance test accuracy
Accuracy limiting factor (ALF)
±0.1%
±0.05%
45000V
45000V
0.05~200Ω
±0.05%±1mΩ Typ.
±0.1%±1mΩ Gur.
0.05~200Ω
±0.05%±1mΩ Typ.
±0.1%±1mΩ Gur.
0.05~200Ω
±0.05%±1mΩ Typ.
±0.1%±1mΩ Gur.
0.05~200Ω
±0.05%±1mΩ Typ.
±0.1%±1mΩ Gur.
Yes
Yes
Instrument security factor (FS)
Yes
Yes
Remanence flux (Kr)
Yes
Yes
Secondary time constant (Ts)
Yes
Yes
Unsaturated inductance (Lu)
Yes
Yes
Saturated inductance (Ls)
Yes
Yes
Excitation characteristic curve
Yes
Yes
10%(5%)error curve
Yes
Yes
Rated symmetrical short
circuit current factor (Kssc)
Accuracy limiting voltage (Eal)
Yes
Yes
Yes
Yes
Transient dimensioning factor (Ktd)
Yes
Yes
Peak instantaneous error (ε^ )
Yes
Yes
Composite error (εc )
Yes
Yes
Ratio error
Phase displacement
Others
PCT200Ai
Output voltage range
Output power
CT
PCT200i
Main supply
Operation temperature
Relative humidity
Dimensions
Weight
LCT display
Operating system
www.relaytest.com
±0.05%Typ. ±0.1%Gur.
±0.02% Typ.
±0.05% Gur.
1min Typ. 3min Gur.
1min Typ. 2min Gur.
0.1min
0.01min
110-240Vac/50-60Hz (norminal)
90-260Vac/45-65Hz (permissible)
110-240Vac/50-60Hz (norminal)
90-260Vac/45-65Hz (permissible)
-10°С~50°С
-10°С~50°С
≤90%,non-condensing
≤90%,non-condensing
470 x200 x 245mm (W×H×L）
470 x200 x 245mm (W×H×L）
11Kg
11Kg
1Kg
8.4 inch, color display
8.4 inch, color display
windows
windows
09
10
www.relaytest.com