TECHNICAL DATA TYPE CZ VACUUM ON-LOAD TAP CHANGER FOR DRY TYPE TRANSFORMER HM0.154.1102 SHANGHAI HUAMING POWER EQUIPMENT CO., LTD.

TYPE CZ VACUUM ON-LOAD TAP CHANGER TECHNICAL DATA 1. General⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯2 2. Technical specifications ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯3 3. Model designation ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯4 4. Terms and definitions ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯5 5. Special design⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯6 6. Motor drive unit ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯7 7. Operation controllers ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯7 8. Accessories ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯8 9. Appendixes ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯8...

1. General Type CZ vacuum on-load tap changer (hereafter refer as CZ or CZ OLTC) is applicable to indoor dry type transformer, through which the tap changes can be realized for voltage regulation when transformer is energized. CZ OLTC is designed in single phase structure, If it is applied for three-phase transformer, three units of CZ must be linked mechanically, and operated by one motor drive unit. CZ can be used for both STAR and DELTA winding connection. CZ OLTC adopts quick resistance transition switching principle. During tap switching process, the tap selector selects the tap firstly...

2. Technical specifications CZ OLTC is designed and manufactured according to IEC60214-1:2003. Please refer to Table 1 for the technical specifications. Table 1 Type CZ Vacuum OLTC Technical Parameters TYPE CZ VACUUM ON-LOAD TAP CHANGER TECHNICAL DATA

3. Model designation 3.1 Description of model CZ OLTC has various models due to difference of the phase, max. rated through current, highest voltage for equipment and operation positions. Variations will be described in the CZ model. See below Fig.2 for details: 3 × Operation positions Highest voltage for equipment (kV) Max. rated through current (A) OLTC type (single phase) 3 pieces of single phase CZ operated by 1 unit of MDU Fig. 2 Designation of CZ OLTC 3.2 Basic connection diagram of tap selector Below Fig.3 is the typical connection diagram of CZ OLTC with 9 operation positions, we will...

4. Terms and definitions 4.1 Through current Rated through current Iu: The current flowing through an OLTC towards the external circuit, which the apparatus is capable of transferring from one tap to the other at the relevant rated step voltage and which can be carried continuously while meeting the requirement. Max. rated through current Ium: The highest rated through-current for which the tap changer is designed for and which forms the basis for all current related tests. 4.2 Step voltage Rated step voltage (Ui) For each value of rated through-current, the highest permissible voltage between...

TYPE CZ VACUUM ON-LOAD TAP CHANGER TECHNICAL DATA <tHm_ 4.5 Short-circuit current test According to IEC 60214-1: 2003, all contacts continuously carrying the current shall be able to withstand 2s (±10%) short circuit test current without melting, deformation or mechanical damage. Meanwhile the starting peak current value shall be 2.5 (±5%) times of the root means square value of rated short circuit test current. Refer the short circuit test current values to Table 1.Type CZ Vacuum OLTC Technical Parameters. 4.6 Ambient air temperature CZ OLTC is for indoor application,the CZ OLTC can be applied...

ijji.HIW_6. Motor drive unit CZ OLTC may be operated by SHM-III or CMA7 motor drive unit according to the requirement, please refer to table 3 for technical data. SHM-III motor drive unit is proprietary and patented design of Huaming. SHM-III encloses the mechanical actuation part in the motor drive box and encapsulates the control part in the controller HMK8. It literally separates the mechanic and electric part. Table 3 Motor Drive Unit Technical Specifications Note: Please specify if special voltage required for motor, and control & heater circuit. TYPE CZ VACUUM ON-LOAD TAP CHANGER TECHNICAL...

7.2 HMC-3C position indicator HMC-3C OLTC position indicator is a support fitting for CMA7 and CMA9 motor drive unit, it can be used to indicate the OLTC position, and has the function of "1→ N", "STOP", "N→ 1" control as well as remote control indicator lamp, its input is decimal code and output is BCD code. HMC-3C technical data is as below, refer to manual for more details. Working voltage: 220V AC Power frequency: 50Hz Maximum operation positions: 107 Environment temperature: -10℃ to 40℃ Indoor 7.3 Automatic voltage regulator ET-SZ6 and HMK-2A Automatic voltage regulator ET-SZ6 and HMK-2A...

Appendix 1. CZI OLTC overall dimension 9 operation positions TYPE CZ VACUUM ON-LOAD TAP CHANGER TECHNICAL DATA Unit: mm

Appendix 2. CZI OLTC overall dimension 7 operation positions TYPE CZ VACUUM ON-LOAD TAP CHANGER TECHNICAL DATA

Appendix 3. CZI OLTC overall dimension 13 operation positions TYPE CZ VACUUM ON-LOAD TAP CHANGER TECHNICAL DATA Unit: mm

Appendix 4. CZ OLTC mounted on supporting frame MDU on the right side, 9 positions TYPE CZ VACUUM ON-LOAD TAP CHANGER TECHNICAL DATA

Appendix 5. CZ OLTC mounted on supporting frame MDU on the left side,9 positions TYPE CZ VACUUM ON-LOAD TAP CHANGER TECHNICAL DATA Unit: mm

Appendix 6. CZ OLTC mounted in enclosure MDU on the right side, 7 positions TYPE CZ VACUUM ON-LOAD TAP CHANGER TECHNICAL DATA

Appendix 7. CZ OLTC mounted in enclosure MDU on the left side, 7 positions TYPE CZ VACUUM ON-LOAD TAP CHANGER TECHNICAL DATA Unit: mm

Appendix 8. CZ OLTC mounted in enclosure MDU on the right side, 9 positions TYPE CZ VACUUM ON-LOAD TAP CHANGER TECHNICAL DATA

Appendix 9. CZ OLTC mounted in enclosure MDU on the left side, 9 positions TYPE CZ VACUUM ON-LOAD TAP CHANGER TECHNICAL DATA Unit: mm

Appendix 10. Disposal drawing of 3 units of single phase CZ OLTC TYPE CZ VACUUM ON-LOAD TAP CHANGER TECHNICAL DATA

Appendix 11. Installation dimension of SHM-III motor drive unit TYPE CZ VACUUM ON-LOAD TAP CHANGER TECHNICAL DATA Unit: mm