2013
SURGE PROTECTIVE DEVICE
Surge Protective Device
BHP 20 3P R 320
R: with alarm auxiliary Max. continuous operating
Max. discharge
Number of contact voltage Uc(V)
Type current
poles (P) Blank: without alarm
Imax/Iimp (kA) auxiliary contact
Max. Standard operation
discharge current voltage
20 20kA (8/20µs) 20kA 320V
1P: 1P
40 40kA (8/20µs) 1P1: 1P+1 40kA 385V
2P: 1P+N
BHP 80 80kA (8/20µs) 3P: 3P 80kA 385V
3P1: 3P+1
100 100kA (8/20µs) 100kA 385V
4P: 3P+N
250 25kA (10/350µs) 25kA 440V
In order to use surge protective devise more effectively, the following information is necessary.
1. The grounding system types of the protected device and the maximum operating voltage of the power grid Us. Max.
2. The impulse withstand voltage of the protected device.
Max. continuous operating
voltage Uc(V) TT TT IT IT
• Common mode Protective
protection: mode TN-S TN-C
Neutral Neutral
Protection of line to earth Before After point
( Protection of line and Grounding system point
RCD RCD earthing non-
neutral to earth) earthing
• Differential mode 3P
Common 2P 2P
protection:
Protection of line to earth 320V
and neutral(Protection of Differential 1P+1 1P+1 1P+1
line to neutral and line to
earth)
Common 3P 4P 4P 4P 3P
385V
440V
Differential 3P+1 3P+1
Operating Conditions
Frequency: 48~60Hz.
Voltage: The voltage continuously applied on between the wiring terminal of the surge protective device shall not
exceed its maximum continuous operating voltage Uc.
Altitude: Less than 2,000M.
Temperature: - Normal range: -5 ~ +40;
- Ultimate range: -40 ~ +70;
Humidity- Relative humidity: 30%~90%, non-condensing.
BHP
01
SURGE PROTECTIVE DEVICE
Combination Selection of Surge Protective Device and Circuit Breaker
The internal core of SPD is one zinc-oxide pressure-sensitive element and zinc oxide consists of grains. When the surge
current with energy through the SPD far exceeds its specified value, ceramic breakdown will happen, and certain grain
boundary layers in the ceramic will be damaged. Under extreme circumstances, excessive heat generated by over high
continuous load will damage the grains, and even break the grains down under serious conditions, leading to the fusion
of ZnO grains and thus causing short circuit. Since there is no time for the burst heat to transfer to the thermal cutoff
mechanism, fuse or circuit breaker must be used for cutting off the power.
Even under the condition of precise parameter selection, the over high temperature rise and burst of the SPD due to
overload are not eliminated.
SPD Circuit Breaker
Max. discharge current Imax/Iimp (kA) Rated current Trip characteristic Model
20kA (8/20µs) 32A C BHA2XC32
40kA (8/20µs) 50A C BHA2XC50
80kA (8/20µs) 63A C BHA3XC63
100kA (8/20µs) 100A 10In 20% BHA100XP100A
25kA (10/350µs) 100A 10In 20% BHA100XP100A
Special notes: 1. The X in the breaker model indicates the pole number, for example, to design a breaker for BHP40, in combination with 4-pole 25A breaker,
the model shall be BHA24C25.
2. The breaking capacity of the breaker must be larger than the maximum short circuit current at this position.
3. Protection shall be provided for each pole of the surge protective device.
4. For PT secondary line protection, due to the restriction of the maximum load current of PT, full consideration shall be given to the following
circumstances:
(1) The maximum short circuit current of PT, it is noted that, when discharge with excessive energy gets SPD breakdown and short-circuit,
the secondary line shall not have high voltage paralysis. At this moment, the release current and quick response capacity of the breaker
must be considered.
(2) Fuse may be considered, since standard fuse cannot be broken down by the pulse current, by contrast, the breaker can protect from the
damages caused by the continuous surge with follow current or energy.
Parameter of Surge Protective Devices
Connection
Un Uc Up Impulse Imax/Iimp In
Type Model
(V) (V) (kV) wave (µs) (kA) (kA)
L-N PE
BHP20 230/ 400 320 1.3 8/20 20 10 2.5mm² 6mm²
Cassette
BHP40 230/ 400 385 1.8 8/20 40 20 4mm² 16mm²
BHP80 230/ 400 385 2.1 8/20 80 40 10mm² 25mm²
Fixed BHP100 230/ 400 385 2.3 8/20 100 60 16mm² 25mm²
BHP250 230/ 400 440 1.8 10/350 25 25 25mm² 35mm²
BHP
02
SURGE PROTECTIVE DEVICE
Wiring Diagrams
L
L L
PE
P1 P2
PE
1P 1P+1 2P (1P+N)
L1 L1 L1
L2 L2 L2
L3 L3 L3
N
N
Gap discharge
3P 3P+1 4P (3P+N)
Dimensions (mm)
BHP20/40 BHP80/100
72 72
3P13PN 3P13PN
3P 54 68.4 3P 54
1P11PN 36 66 1P11PN 36 68
1P 18 50 1P 18 50
89.1
91
91.5
93
45
45
BHP250
142.4
3P13PN
3P 106.8
1P11PN 71.2 68
1P 35.6 50
91.3
93
45
BHP
03
SURGE PROTECTIVE DEVICE
Installation Method of SPD
1. The cable for connecting SPD shall be as short as possible, since
the impedance of the wire can weaken the protection function of
SPD.
2. To realize effective protection, it is suggested to install one lead-in
device to locally diverse the current at the inlet of the device.
3. When one switch device and one SPD are mounted in a serial
manner, the wire shall be as short as possible.
The cassette module of BHP series cassette surge protective
device, there is unique pilot hole at the bottom of the base, cores
of different specifications cannot be plugged in if interchanging
positions. The core side is high-grade insulation material, therefore,
when pulling out the core, it will not contact with charged body.
Short grounding cable Overlong grounding cable
4P 3P+1
Sensor Gap discharge
Sensor
Counter
Type TAD-04-99
Rated operation voltage 85~250V
Counter pulse threshold 1kA
Maximum count 99
Counting method Pulse
Counter display method 2 digits LED red
Minimum interval between counter pulses 200ms
Digital memory method Pulse falling edge, flash accumulation record
Dimension 916818 (mm)
Note: Lightning strike pulse counter can count the discharge pulses and store them to the single-chip FLASH, and features intuitive display and small volume.
BHP
04
SURGE PROTECTIVE DEVICE
SPD Wiring Example
TN-C system three phase TN-S system three phase
Protection equipment
Protection equipment
SPD SPD
TN-C-S system three phase
ClassⅠprotection ClassⅡprotection
SPD SPD
Grounding connection Grounding connection
IT system three phase Single-Phase Power Supply Scheme
Protection equipment
Protection equipment
SPD
SPD
Special notes:
Time-delay leakage protector shall be selected for the RCD
in the power supply system; leakage protector insensitive
to atmospheric over-voltage shall be selected for the RCD
installed in residences and office buildings.
BHP
05
SURGE PROTECTIVE DEVICE
TT System Scheme 1 TT System Scheme 2
Protection equipment
Protection equipment
SPD SPD
Special notes:
Time-delay leakage protector shall be selected for the RCD in the power supply system; leakage protector insensitive to atmospheric over-
voltage shall be selected for the RCD installed in residences and office buildings.
TN-C TN-S IT
Residual current protection
Main panel Main panel Main panel
SPD SPD
Grounding connection
TT System Scheme 1 TT System Scheme 2
Residual current protection Residual current protection
Main panel Main panel
SPD
SPD
Grounding connection
Gap discharge
BHP
06
MOTOR CONTROL (CONTACTOR/ MS/ MMS), CIRCUIT BREAKER (MCCB/ ELCB/ EMCCB/ MCB), AIR CIRCUIT BREAKER, AUTOMATIC
TRANSFER SWITCHES (Panel Board Type/ Residential Unit Use), SURGE PROTECTIVE DEVICE, LOW VOLTAGE POWER CAPACITORS,
SMART METER, INVERTER
Breaker & switchgears overseas sales dept.
3F, No.9, Sec. 1, Chang-an E. Rd., Zhongshan Dist., Taipei City 10441, Taiwan
T. +886-2-2541-9822 F. +886-2-2581-2665
e-mail. b.export@seec.com.tw
http://circuit-breaker.seec.com.tw
Headquarters
16F, No.88, Sec. 6, Zhongshan N. Rd., Shilin Dist., Taipei City 11155, Taiwan
T. +886-2-2834-2662 F. +886-2-2836-6187
http://www.seec.com.tw Distributor
1305. spd-ob-2
