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Sebagai Seorang calon Ahli K3 listrik Wajib melakukan OJT dan Assesment Lapangan
Pembinaan Ak3 Listrik. Yang mana dari hasil prakteknya akan di ajukan ke
KEMENAKERTRANS - RI. Sebagai salah satu syarat untuk mendapatkan Surat Penunjukan
sebagai Ahli K3 Listrik. Sebagai tempat OJT saya pilih PT Chitra Paratama Retread Division
yang berada di Kota Balikpapan dengan melakukan pemeriksaan pada generator dan memeriksa
dan menguji LVMDP.
Untuk mendukungnya aktivitas di PT Chitra Paratama apabila terjadinya pemadaman
listrik/Ganguan dari Gardu induk PLN, maka di sediakan 2 buah Unit Generator Dengan
kapasitas generator 500 KVA, menggunakan bahan bakar solar, tegangan output generator 400
Volt (3 Phase) dan 230 Volt (1 Phase) dan frekwensi 50Hz.
Dari hasil pemeriksaan dan pengujian dapatlah disimpulkan bahwa kondisi operasi
intalasi Listrik PT Chitra Paratama secara umum telah memenuhi aturan dan standard yang
berlaku, tetapi masih ada beberapa temuan minor yang harus ditindak lanjuti temuannya.
Memastikan perencanaan, pemasangan, penggunaan, pemeriksaan dan pengujianinstalasi listrik yang dilayani oleh panel serta sistem pentanahan sesuai dengan
standard.Mengetahui potensi bahaya dari listrik di PT Chitra Paratama Retread Division
(Chitra) .
Kemungkinan timbulnya bahaya yang besar berupa kecelakaan, kebakaran,
peledakan, pencemaran lingkungan dan penyakit akibat kerja ini dapat diakibatkan oleh
kesalahan dalam penggunaan peralatan, pemahaman, kemampuan serta ketrampilan
tenaga kerja yang kurang memadai.
Masalah tersebut diatas akan sangat mempengaruhi dan mendorong peningkatan
jumlah maupun tingkat keseriusan kecelakaan kerja dan penyakit akibat kerja. Untuk
mengurangi masalah tersebut maka diperlukan peningkatan pelaksanaan K3 di tempat
kerja, agar kecelakaan dan penyakit akibat kerja dapat dikurangi. Sejalan dengan
kebijakan pemerintah dengan diterapkannya Permenaker No. 12 tahun 2015 tentang
Keselamatan dan Kesehatan Kerja Listrik di tempat kerja.
Untuk itu diperlukan seorang Ahli k3 Listrik untuk melakukan pengawasan
pelaksanaan K3 Listrik di tempat kerja sebagai perpanjangan tangan pengawas K3
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Disnaker. Sebelum mendapatkan penunjukan dari KEMENAKERTRANS - RI Seorang
Calon Ahli k3 Listrik wajib melakukan pembuatan Laporan OJT dan Assesment
Lapangan Pembinaan Ahli k3 Listrik.
Undang-Undang No: 1 tahun 1970 : Tentang Keselamatan Kerja
Peraturan Menteri Tenaga Kerja RI No. Per.05/MEN/1996 : Tentang Sistem
Manajemen Keselamatan Dan Kesehatan Kerja
Keputusan Menteri Tenaga Kerja RI No. 12 Tahun 2015 : Tentang Keselamatan Dan
Kesehatan Kerja Listrik Di Tempat Kerja
Peraturan Menteri Tenaga Kerja RI No: PER.04/MEN/1995 : Tentang PerusahaanJasa Keselamatan Dan Kesehatan Kerja
PT Chitra Paratama Retread Division (Chitra) menawarkan berbagai macam produk
Michelin, dan Nokian termasuk ban untuk 'earthmovers', truk, bus, dan peralatan kehutanan dan
pertanian. Chitra juga menjual aksesori ban, termasuk rims roda dan komponen TOPY, serta ban
dalam. Sejalan dengan tujuan perusahaan untuk menyediakan solusi ban terpadu pada pelanggan,Chitra juga melakukan pemeliharaan dan perbaikan ban di lokasi, memiliki dan mengoperasikan
retread factory di Balikpapan untuk ban truk, bus, dan earthmovers.
Visi Chitra adalah menyediakan pelanggan dengan solusi ban terpadu, termasukdukungan teknis dan mesin untuk memaksimalkan umur ban, dengan biaya yang minim. Kami
aktif mendorong dan berpartisipasi dalam kemitraan dengan pemasok kami, menciptakan sinergi
untuk mempromosikan keberhasilan bersama. Kami didukung oleh 180 karyawan yang bekerja
di kantor pusat Jakarta serta di Balikpapan, Batu Hijau, Tanjung, Sanggata, Gunung Bayan danPalembang.
Berawal dari sebuah divisi PT Trakindo Utama pada tahun 1996, PT Chitra Paratamadidirikan pada tanggal 18 Februari 2000 dan sejak itu telah mengintegrasikan sistem praktek
manajemen terbaik ke dalam strukturnya. Salah satu langkah terakhir termasuk mendapatkan
sertifikasi OHSAS 18001:2007 dari World Quality Assurance (WQA) pada tanggal 14 Agustus
2009.
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Nama dan Alamat Pemakai : PT Chitra Paratama Retread Division
Subyek : Generator Set ( GENSET )
Tempat Pemeriksaan : Ruang Genset
Tanggal Pemeriksaan : 3 November 2015
Motor Pengerak (Primover)
Pabrik Pembuat : Caterpillar
Nomor Seri : STH00703
Model : C18-550
RPM : 1500
Daya : 536 HP
Langkah : 4
Bahan Bakar : Solar
Jumlah Silinder : 6
Generator
Pabrik Pembuat : Caterpillar
Model : LC6134F
Seri Nomor :
Rate Output : 500 kVA
Voltase : 400 / 230 Volt
Ampere : 722 Amp
Frekwesi : 50 Hz
Phase : 3
Isolation Class : H
Power Faktor : 0.8
Tahun Pembuatan : 2005
IP : 23
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No Bagian Yang diperiksa Kondisi Keterangan
A Generator
- Plat Nama Baik Kelihatan jelas
- Switch Manual Baik Mudah dioperasikan
- Oli Baik Volume oli cukup
- Air Radiator Baik Tidak ada bocor
- Klem dan Air Accu Baik Clem kencang
- Valve Solar - -
- Filter Udara Baik Bersih dari kotor
- Runing Hours Meter Baik Dokumen Tidak terecord
- Exhause Fan - -
- Exhause Engine Baik
- Alat Pemadam Kebakaran Baik
- Kebersihan Baik
- Sambungan Grounding Baik Sambungan kuat
B Panel Generator
- Tombol Emergensi Baik Masih Berfungsi
- Switch Speed Adjuter Baik Masih Berfungsi
- Tombol Auto Baik Masih Berfungsi- Battery Voltage Meter Baik Masih Berfungsi
- RPM Meter Baik Masih Berfungsi
- Pressure Meter Baik Masih Berfungsi
- Temperatur Oli Meter Baik Masih Berfungsi
- ACB Baik Masih Berfungsi
- MCB Baik Masih Berfungsi
- Switch CB Operation Baik Masih Berfungsi
- Switch Basic Set Baik Masih Berfungsi
- Switch Syncron On Baik Masih Berfungsi
- Kontak ACB untuk Syncron Baik Masih Berfungsi
- Ampare RST Meter Baik Masih Berfungsi
- Voltage Meter Baik Masih Berfungsi
- KW Meter Baik Masih Berfungsi
- Frekquensi Meter Baik Masih Berfungsi
- Cos Q Meter Baik Masih Berfungsi
- Indikator RST Baik Jelas
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C LVMDP
- Periksa Konstruksi Kubikel Baik Masih Berfungsi
- Periksa Busbar dan Sambungan Baik
- Periksa Rele dan Peralatan Baik
- Periksa Pengaman Lebur Baik
- Periksa Kabel Baik
- Periksa Tata Peletakan Kabel Baik
- Periksa Pemutus Rangkaian Baik Masih Berfungsi
- Periksa Blok Terminal Baik
- Periksa Insulator Baik
- Periksa Pelat Nama Baik Masih Terbaca Jelas
- Periksa Lampu Indikator Baik Masih Berfungsi
- Periksa peralatan meteran Baik Masih Berfungsi
- Periksa Peralatan Alarm Baik Masih Berfungsi
- Periksa Pembumian Baik Tersambung
- Periksa Sambungan Kabel Baik
- Periksa Kode Penandaan Kabel Baik Masih Terbaca Jelas
- Periksa Ukuran Busbar Baik
- Periksa Dudukan Switchgear Baik Masih Berfungsi
- Periksa Saklar On/Off Baik Masih Berfungsi
- Periksa Penahan Pintu Panel
Baik Masih Berfungsi
Jenis Kabel KHA
- NYY 4 x 240 mm2
- NYY 4 x 10 mm2
- NYY 4 x 4 mm2
- NYFGBY 4 x 25 mm2
- NYFGBY 4 x 16 mm2
- BC 2 x95 mm2
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IV.
Pengukuran dilakukan terhadap :
a. Pemeriksaan Resistansi Isolasi Kabel
*
Kyoritsu Megger Tester 3005, Serial 1515468
b. Pemeriksaan Drop Voltage di Pemakaian
*
Krisbow Multitester Tester
c. Pengukuran Tahanan Pentanahan
* Kyoritsu Earth Tester 4102A
No.Resistansi Isolasi
(M-ohm)
TESTVOLTAGE
(V dc)
Spec(M-Ohm)
>Result
01. Kabel Dari Sumber Utama ke Panel distribusi
R-(S-T-N) S-(R-T-N) T-(R-S-N)
800/900/350 800/900/450 900/900/450 500 1 Acc
No.Drop Voltage
(Volt)
SpecTidak BolehLebih Dari
4% TegSumber
Result
01. Kotak Kontak Tusuk
TeganganSumber
F-NTitik 1
F-NTitik 2
F-NTitik 3
230 223,5 227.5 224.4Min 220,8
Volt Acc
No. LokasiTahanan Pentanahan
(Ohm)
Spec(Ohm)
Tidak BolehLebih Dari
Result
01.Rod Panel DistribusiLVMDP
0.53 5 Acc
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Berdasarkan hasil pemeriksaan dan pengukuran tersebut diatas, dan dilakukan analisa
Resistansi Isolasi Sesuai PUIL 2011 Tabel 6.2
Voltase sirkuit Nominal sampai dengan 500 V, Termasuk FELV voltase ujinya 500V Dc
Resistansi Isolasinya Harus Lebih besar atau sama dengan 1 M
Drop Voltase Sesuai PUIL 2011 2.2.3.1
Drop voltase antara terminal dan sembarang titik tidak boleh melebihi 4 % dari voltase
pengenal
Resistansi Sistem Pentahanan Sesuai PUIL 2000 3.13.2.10
Resistansi Pembumian total seluruh sistim t idak boleh lebih dar i 5
dapat disimpulkan bahwa Instalasi Listrik Bangunan di PT. Chitra Paratama Retread Division
tersebut LAIK digunakan
BALIKPAPAN, 05 November 2015
Mengetahui
Atasan Langsung
(Hery Priono ) ( Zulhaidir )
Kabid Kom 2 Inspector
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Standard / Code, Spesifikasi, Rekomendasi Teknik, Spesifikasi Pemilik (owner spec.) dan
peraturan lainnya yang berkaitan dengan pemasangan dan pengoperasiaan peralatan yangdipergunakan :
NFPA 70/ NEC (National Fire Protection Association)
IEC (International Electrical Code)
PUIL 2011 (Peraturan Umum Instalasi Listrik)/ SIN 04-0225-2011
NETA (International Electrical Testing Association)
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All data in this document is for information only and is subject to change.
Avesco AG Tel: +41 (0)848 363 749
Energy Systems Fax: +41 (0)62 915 81 36
Hasenmattstrasse 2
CH4901 Langenthal / BE
www.avesco.ch Ref: CAT C15-550_EN
[email protected] Date: 11 November 2013
Technical data Diesel Generator Set CAT C15-550
Output Ratings with Radiator DIN/ISO 3046
Combustion Strategy Low BSFC, 49 C ACT
Generating set Model Prime Standby
400V, 50Hz, power factor 0.8 500 kVA400 kW
550 kVA440 kW
Feature Code C15DF1W
Performance No. DM8494 DM8495
Diesel Engine
Brand Caterpillar
Type C15 ATAAC
No. of Cylinders / Alignment 6 / I
Cycle 4-Stroke
Cooling Method Water-cooled
Fuel Diesel
Speed 1500 rpm
Bore 137.20 mmStroke 171.40 mm
Displacement 15.20 L
Compression Ratio 16.1:1
Aspiration Air-to-Air Aftercooled
Fuel System MEUI
Base Tank Capacity Optional 908 L
Jacket Water heaters 220 V / 9 kW
Starting Motor 24 V / 7 kW
Battery Type 115-2421
Quantity 2
Capacity per Battery / total 90 Ah - 12 V / 90 Ah - 24 V
Generator
Brand Caterpillar
Type / Frame LC6134F
Excitation Permanent Magnet or AREP
Pitch 0.6667
Number of Poles 4
Number of Bearings Single Bearing
Number of Leads 12
Insulation Class H
IP Rating IP23
Nominal Speed 1500 rpm
Over Speed capability 150 %
Wave form Deviation (Line to Line) Less than 2 %
Voltage RegulatorThree phase sensing
Voltage regulation Less than % (steady state)
Less than % (w/ 3%speed change)
Telephone Influence Factor (TIF) Less than 50
Total Harmonic Distortion (THD) Less than 2%
CBK 3pol manual, fixed mount rear 800 A / 50 kA
Typical Cabeling; TN-C (Prime) 2 x 4 x 185 mm + 1 x 1 x 185 mm
Typical Cabeling; TN-C (Standby) 2 x 4 x 150 mm + 1 x 1 x 150 mm
Package Dimensions
Engine: Length x Width x Height 1447 x 897 x 1820 mm
Weight 1590 kg
Generator: Length x Width x Height 1725 x 732 x 1170 mm
Weight 1260 kg
Radiator: Length x Width x Height 814 x 1119 x 1784 mm
Dry Weight 140 kg
Complete: Length x Width x Height 3897 x 1119 x 2250 mm
Weight 3490 kg
Illustration
Technical Data Prime Standby
Fuel Consumption
100% load with Fan 102.0 L/hr 111.8 L/hr
75% load with Fan 76.2 L/hr 83.6 L/hr
50% load with Fan 54.0 L/hr 58.7 L/hrOil consumption 75% load 0.057 L/hr 0.063 L/hr
Cooling System
Engine coolant Capacity with
Radiator / expansion Tank70.8 L
Engine coolant Capacity 20.8 L
Inlet Air
Combustion Air inlet flow rate 28.1 m/min 30.7 m/min
Exhaust System
Exhaust stack gas Temperature 511.3 C 528.4 C
Exhaust gas flow rate 79.2 m/min 87.2 m/min
Exhaust System backpressure max. 10 kPa
Heat Rejection
Heat Rejection to coolant (total) 149 kW 166 kWHeat Rejection to exhaust (total) 360 kW 398 kW
Heat Rejection to after cooler 75 kW 83 kW
Heat Rejection to Atmosphere from
Engine46 kW 70 kW
Heat Rejection to Atmosphere from
Generator23.3 kW 26.6 kW
Lube System
Sump refill with Filter 60.0 L
Exhaust Emission (Nominal Data); Potential Site Variation possible
NOx mg/nm 3438.4 3689.4
CO mg/nm 170.2 168.2
HC mg/nm 5.3 5.8
Part Matter mg/nm 7.9 7.0
GeneratorMotor starting capability @30%
Voltage Dip1455 skVA
Rated Current 721.7 A 793.9 A
Short-Circuit Current 3 x INOM
Radiator
Radiator Type AS14.2 CTS
Design Temperature 52 C
Radiator coolant Capacity 50.0 L
Air Flow @ 120 Pa 476 m/min
Air Flow @ 180 Pa 445 m/min
Sound pressure Level LPA @ 75% Last @ 7m
dB Hz 63 125 250 500 1000 2000 4000 8000Overall
dBA
Mechanical [Stby] 86 85 85 86 87 84 80 82 91
Exhaust [Stby] 79 84 88 94 94 95 91 79 99
Mechanical [Prim] 86 85 85 86 87 84 80 82 91
Exhaust [Prim] 79 84 88 94 94 95 91 79 99
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Low voltage electrical distribution
Masterpact NWCircuit breakers and switch-disconnectorsfrom 800 to 6300 A
User manual
09/2009
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The Masterpact NW range of circuit breakers and switch-disconnectors
offer current ratings from 800 A to 6300 A.
Five different performance levels are available:
N1: standard with total discriminationH1: high performance with total discrimination
H2: a compromise between current limiting and discrimination
H3: high breaking capacity and discrimination, without current limiting
L1: high level of current limiting, with some discrimination.
b
b
b
b
b
Rating plate
DB118744
DB118327
DB118743
DB118374
Icu kA at 415 V
Ics = 100% Icu150
100
65
42
L1 H3H2
H1
N1
160012001000800 2000 2500 3200 4000 5000 6300
Rating plateIdentifying Masterpact
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Discovering Masterpact
Masterpact circuit breakers are available in drawout and xed versions.
The drawout version is mounted on a chassis and the xed version is installed using
xing brackets.
Drawout version
Fixed version
DB118375
DB118376
Components
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Chassis
DB118745
Discovering Masterpact Components
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Circuit breaker / switch-disconnector
DB118
746
MCH gear motor forelectrical charging ofthe operating mechanism
Operating-mechanismcharging handle
PF "ready to close"contact
SDE/2 "fault-trip"indication contactor Res electricalremote reset
Terminal block forthe control unit andthe SDE contact(s)
MX/2 opening release orMN undervoltage release
XF closing release
MX/1 opening release
Closing pushbutton
Opening pushbutton
Operation counter
Carrying grip
SDE/1 "fault-trip"indication contact
Arc chute
Block of 4 OF "ON/OFF"indication contacts
Terminal block forthe control auxiliaries
2 Blocks of 4 additional OF"ON/OFF" contacts or EF combined"connected/closed" contacts
Keylocking kit
Locking by padlocks
BPFE electrical closing pushbutton
Control unit
Terminal block for the ON/OFFindication contacts
Discovering Masterpact Components
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Front
DB118747
RESET
Indicator for positionof the main contacts
"Springs charged"and "Ready to close"indicator
Locking by padlockor lead-seal coverfor pushbuttons
Rating plate
Trip indication buttonused to reset before closing
Discovering Masterpact Components
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Interval Operations ProcedureEach year Open and close the device
locally and remotely, successivelyusing the various auxiliaries
Test the operating sequencesTest the control unit using the
mini test kit.
b
b
b
see pages 10 and 11.
see page 8.see the user manual
of the control unit.
v
v
v
Every two years orwhen the control-unitmaintenance indicatorreaches 100
Check the arc chutesCheck the main contactsCheck the tightness of
connectionsCheck the disconnecting-contact
clusters
b
b
b
b
see page 43see page 43see the device
installation manualsee page 44
v
v
v
v
Maintaining Masterpact
performanceRecommended maintenanceprogram
Periodic inspections required
Type of
circuit breaker
Maximum service life Service life of various parts
Arc chutes
chutes
Main
contacts
MCH
Connecting-rod
springs
MX/XF
releases
NW08 to NW16types N1/H1/H2
25000 10000 10000 12500 12500
NW08 to NW16type L1
25000 3000 10000 12500 12500
NW20types H1/H2
20000 440 V: 8000690 V: 6000
440 V: 8000690 V: 6000
10000 12500
NW20 to NW25type H3
20000 2000 440 V: 8000690 V: 6000
10000 12500
NW20type L1
20000 3000 10000 10000 12500
NW25 to NW40types H1/H2
20000 440 V: 5000690 V: 2500
440 V: 5000690 V: 2500
10000 12500
NW32 to NW40type H3
20000 1250 440 V: 5000690 V: 2500
10000 12500
NW40b to NW63types H1/H2
10000 1500 1500 5000 12500
Recommended program for devices used under
normal operating conditions:
Ambient temperature: -5 C / +60C
Normal atmosphere
Parts requiring replacement, depending on the
number of operating cycles.
The following parts must be replaced periodically to lengthen the service life of thedevice (maximum number of operating cycles).
Part replacement must be programmed on the basis of the data below, listing the
service life of the various parts in numbers of O/C cycles at the rated current.
Number of O/C cycles at the rated current
Part Intervening entity Description orprocedure
Arc chutes User.b see page 43.v
Main contacts Inspection: userReplacement:
Schneider After SalesSupport.
b
b
see page 43.v
MCH gear motor User.b see page 9.v
Mechanicalinterlocks
User.b
Connecting-rod springs Schneider After SalesSupport.b
MX/MN/XF User.b see page 10, 11.v
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Arc chutesRemove the xing screws:
types N1, H1 and H2 yNW 40: two screws
types H1 and H2 uNW 40b, type H3: three screwstype L1: four screws.
b
b
b
b
DB118432
If the control unit has a maintenance indicator, there is
no need to systematically check the contacts.
If the contacts are worn, have the concerned polesreplaced by the Schneider Service centre.
Maintenance operations
DB118431
DB118430
E51279A
Wear of main contactsRemove the arc chutes.
Close the device and check the contacts.
Note: It is normal to see variations of the wear indication between the poles of asingle device that is new or used. A new device does not have a pole in the indication
area of contacts worn.
b
b
Before undertaking any maintenance work, de-
energise the installation and t locks or warnings in
compliance with all applicable safety standards.
Check the arc chutes:
chamber not cracked
separators not corroded.
If necessary, replace the arc chutes.
b
b
b
Maintaining Masterpact
performance
Type A
Contacts OK
DB125643
55
DB125644
Contacts worn
D
B125645
Type B
Contacts OK
DB125643
55
DB125646
Contacts worn
DB125647
NW 40b-63 H1, H2, NA, HA CEI
NW 08-20 L1 CEI
NW 50-60 L UL
NW 08-60 L1 ANSI
NW 08-40 H1 ANSI
NW 10-40 HADC
NW 08-40 NA, HA, H1, H2, HA10, H10, NAVY CEI
NW 08-20 N1 CEI
NW 20-40 H3 CEI
NW 10-40 NDC, HDC
NW 08-20 N UL
NW 08-30 H UL
NW 08-40 H2, H3 ANSI
NW 40 EARTHING SWITCH
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Disconnecting-contact clustersGrease the contacts using the grease listed on page 45,
supplied by Schneider Electric
Check the contacts as follows:Open the circuit breaker
De-energise the busbars
Disconnect the circuit breaker
Remove the circuit breaker
Check the contact ngers (no sign of copper should be visible)
Replace any worn clusters.
The position of the clusters must correspond to the table below.
b
b
b
b
b
b
b
b
layout n 1 layout n 2 layout n 3 layout n 4 layout n 5
Maintaining Masterpact
performance
DB118436
DB118435
DB118434
DB118433
DB118437
Maintenance operations
DB119174
layout 2' layout 3'
DB118513
DB118516
Rating NW08 NW10 NW16 NW20 NW25 NW32 NW40 NW40b NW63
Type NW12 NW50
N1 layout n 1
2 clusters/pole
H1 layout n 2 layout n 3 layout n 4 layout n 5 layout n 4
4 clusters/pole 8 clusters/pole 12 clusters/pole 14 clusters/pole 24 clusters/pole
H2
H3
L1 layout n 3 layout n 5
8 clusters/pole 14 clusters/pole
corrosion layout 2' layout 3' layout 5 layout 4
protection 4 "GOLDEN" 8 "GOLDEN" clusters/pole 14 "GOLDEN" clusters/pole 24 "GOLDEN"
clusters/pole clusters/pole
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Ordering replacement parts
Electrical accessoriesThe electrical accessories that may require replacement are the following:
MCH gear motor
MX opening release(s)XF closing release
MN undervoltage release.
See pages 33 and 34 in the "Auxiliaries for remote operation" section for their
characteristics.
b
b
b
b
E51335A
Arc chutes1 arc chute:
NW type N1
NW08 to NW40 types H1
and H2
NW40b to NW63 types
H1 and H2
NW type H3
NW type L1.
b
b
b
b
NW08 to NW40:
one chute per pole
NW40b to NW63:
two chutes per pole.
b
Disconnecting-contact clusters for standard NW1 cluster.b Number per circuit
breaker, see table page 44.
b
Grease for disconnecting-contact clusters1 can for standard NW.b
E46237A
E46109A
Front1 front for 3- or 4-pole
devices.
b 1 per device.b
Crank1 crank per device.bE
51336A
Charging handleE46126A
1 handle per device.b
1 can for NW with
corrosion protection.
b
Maintaining Masterpact
performance
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Maintaining Masterpact
performanceTroubleshooting and solutions
Problem Probable causes SolutionsCircuit breaker cannot be closed locally or remotely Circuit breaker padlocked or keylocked in the
"open" position
Circuit breaker interlocked mechanically in a
source changeover system
Circuit breaker not completely connected
The reset button signalling a fault trip has not
been reset
Stored energy mechanism not charged
MX opening shunt release permanently
supplied with power
MN undervoltage release not supplied with
power
XF closing release continuously supplied with
power, but circuit breaker not "ready to close"
(XF not wired in series with PF contact)
Permanent trip order in the presence of a
Micrologic P or H control unit with minimum voltage
and minimum frequency protection in Trip mode
and the control unit powered
b
b
b
b
b
b
b
b
b
disable the locking fonction
check the position of the other circuit
breaker in the changeover system
modify the situation to release the interlock
terminate racking in (connection) of the
circuit breaker
clear the fault
push the reset button on the front of the
circuit breaker
charge the mechanism manually
if it is equipped with a an MCH gear motor,
check the supply of power to the motor. If the
problem persists, replace the gear motor
(MCH)
there is an opening order.
Determine the origin of the order. The ordermust be cancelled before the circuit breaker
can be closed
there is an opening order.
Determine the origin of the order.
check the voltage and the supply circuit
(U > 0.85 Un).
If the problem persists, replace the release
cut the supply of power to the XF closing
release, then send the closing order again via
the XF, but only if the circuit breaker is
"ready to close"
Disable these protection functions on the
Micrologic P or H control unit
v
v
v
v
v
v
v
v
v
v
v
v
v
Circuit breaker cannot be closed remotely but can be opened
locally using the closing pushbutton
Closing order not executed by the XF closing
release
b check the voltage and the supply circuit
(0.85 - 1.1 Un).
If the problem persists, replace the XF release
v
Unexpected tripping without activation of the reset button
signalling a fault trip
MN undervoltage release supply voltage too low
Load-shedding order sent to the MX opening
release by another device
Unnecessary opening order from the MX
opening release
b
b
b
check the voltage and the supply circuit
(U > 0.85 Un)
check the overall load on the distribution
system
if necessary, modify the settings of devices
in the installation
determine the origin of the order
v
v
v
v
Unexpected tripping with activation of the reset button
signalling a fault trip
a fault is present :
overload
earth fault
short-circuit detected by the control unit
b
b
b
determine and clear the causes of the
fault
check the condition of the circuit breaker
before putting it back into service
v
v
Instantaneous opening after each attempt to close the circuit
breaker with activation of the reset button signalling a fault trip
Thermal memory
Transient overcurrent when closing
Closing on a short-circuit
b
b
b
see the user manual of the control unit
press the reset button
modify the distribution system or the control-
unit settings
check the condition of the circuit breaker
before putting it back into service
press the reset button
clear the fault
check the condition of the circuit breaker
before putting it back into service
press the reset button
v
v
v
v
v
v
v
v
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Problem Probable causes SolutionsCircuit breaker cannot be opened remotely, but can be opened
locally
Opening order not executed by the MX opening
release
Opening order not executed by the MN
undervoltage release
b
b
check the voltage and the supply circuit
(0.7 - 1.1 Un).
If the problem persists, replace the MX
release
drop in voltage insufcient or residual
voltage (> 0.35 Un) across the terminals of
the undervoltage release. If the problem
persists, replace the MN release
v
v
Circuit breaker cannot be opened locally Operating mechanism malfunction or welded
contacts
b contact a Schneider service centrev
Circuit breaker cannot be reset locally but not remotely Insufcient supply voltage for the MCH gear
motor
b check the voltage and the supply circuit
(0.7 - 1.1 Un).
If the problem persists, replace the MCH
release
v
Nuisance tripping of the circuit breaker with activation of the reset
button signalling a fault trip
Reset button not pushed-in completelyb push the reset button in completelyv
Impossible to insert the crank in connected, test or disconnected
position
A padlock or keylock is present on the chassis
or a door interlock is present
b disable the locking functionv
Impossible to turn the crank The reset button has not been pressedb press the reset buttonv
Circuit breaker cannot be removed from chassis Circuit breaker not in disconnected position
The rails are not completely out
b
b
turn the crank until the circuit breaker is in
disconnected position and the reset button
out
pull the rails all the way out
v
v
Circuit breaker cannot be connected (racked in) Cradle/circuit breaker mismatch protection
The safety shutters are locked
The disconnecting-contact clusters are
incorrectly positioned
Cradle locked in disconnected position
The reset button has not been pressed,
preventing rotation of the crank
The circuit breaker has not been sufciently
inserted in the cradle
b
b
b
b
b
b
check that the cradle corresponds with
the circuit breaker
remove the lock(s)
reposition the clusters
disable the cradle locking function
press the reset button
insert the circuit breaker completely so
that it is engaged in the racking mechanism
v
v
v
v
v
v
Circuit breaker cannot be locked in disconnected position The circuit breaker is not in the right position
The cranck is still in the cradle
b
b
check the circuit breaker position by
making sure the reset button is out
remove the crank and store it
v
v
Circuit breaker cannot be locked in connected, test or
disconnected position
Check that locking in any position is enabled
The circuit breaker is not in the right position
The cranck is still in the cradle
b
b
b
contact a Schneider service centre
check the circuit breaker position by
making sure the reset button is out
remove the crank and store it
v
v
v
The crank cannot be inserted to connect or disconnected the
circuit breaker
The rails are not completely inb push the rails all the way inv
The right-hand rail (chassis alone) or the circuit breaker cannot be
drawn out
The crank is still in the chassisb remove the crank and store itv
Maintaining Masterpact
performanceTroubleshooting and solutions
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7/25/2019 Laporan OJT AK3
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Checking Masterpact
operating conditions
E51261B
E51262B
Test
E51260B
Tes t
Ambient temperatureMasterpact NW devices can operate under the following temperature conditions:
the electrical and mechanical characteristics are stipulated for an ambient
temperature of -5 C to +70 Ccircuit-breaker closing is guaranteed down to -35 C
Masterpact NW (without the control unit) can be stored in an ambient temperature
of -40 C to +85 C
the control unit can be stored in an ambient temperature of -25 C to +85 C.
Extreme atmospheric conditionsMasterpact NW devices have successfully passed the tests dened by the following
standards for extreme atmospheric conditions:
IEC 68-2-1: dry cold at -55 C
IEC 68-2-2: dry heat at +85 C
IEC 68-2-30: damp heat (temperature +55 C, relative humidity 95%)
IEC 68-2-52 level 2: salt mist.
Masterpact NW devices can operate in the industrial environments dened by
standard IEC 947 (pollution degree up to 4).
It is nonetheless advised to check that the devices are installed in suitably cooled
switchboards without excessive dust.
Masterpact NW devices with corrosion protection have successfully passed the tests
dened by the following standards for extreme atmospheric conditions:
IEC 68-2-42: atmospheres containing sulphur dioxide (SO)
IEC 68-2-43: atmospheres containing hydrogen sulphide (HS).
VibrationsMasterpact NW devices resist electromagnetic or mechanical vibrations.
Tests are carried out in compliance with standard IEC 68-2-6 for the levels required
by merchant-marine inspection organisations (Veritas, Lloyd's, etc.):
2 to 13.2 Hz: amplitude 1 mm
13.2 to 100 Hz: constant acceleration 0.7 g.
Excessive vibration may cause tripping, breaks in connections or damage tomechanical parts.
b
b
b
b
b
b
b
b
b
b
b
b
Tes t
Environmental conditions
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28/28
E51263B
AltitudeMasterpact NW devices are designed for operation at altitudes under 2000 metres.
At altitudes higher than 2000 metres, the modications in the ambient air (electricalresistance, cooling capacity) lower the following characteristics.
Altitude (m) 2000 3000 4000 5000
Dielectric resistance 3500 3150 2500 2100voltage (V)
Average insulation 1000 900 700 600level (V)
Maximum utilisation 690 590 520 460voltage (V)
Average thermal 1 x In 0.99 x In 0.96 x In 0.94 x Incurrent (A) at 40 C
E51264B
Electromagnetic disturbancesMasterpact NW devices are protected against:
overvoltages caused by devices that generate electromagnetic disturbances
overvoltages caused by an atmospheric disturbances or by a distribution-system
outage (e.g. failure of a lighting system)
devices emitting radio waves (radios, walkie-talkies, radar, etc.)
electrostatic discharges produced by users.
Masterpact NW devices have successfully passed the electromagnetic-compatibility
tests (EMC) dened by the following international standards:
IEC 947-2, appendix F
IEC 947-2, appendix B (trip units with earth-leakage function).
The above tests guarantee that:no nuisance tripping occurs
tripping times are respected.
b
b
b
b
b
b
b
b
CleaningNon-metallic parts:
never use solvent, soap or any other cleaning product. Clean with a dry cloth only
Metal parts:
clean with a dry cloth whenever possible. If solvent, soap or any other cleaning
product must be used, make sure that it does not come into contact with
non-metallic parts.
b
b
2000m
Tes t
Tes t
Checking Masterpact
operating conditionsEnvironmental conditions